JP6588491B2 - Method for disposing latent heat storage material in heat storage tank and latent heat storage tank - Google Patents

Description

  The present invention relates to a case where a latent heat storage material is used to transfer heat to and from a heat medium in a latent heat storage tank via a heat storage material container by using a latent heat storage material that performs heat storage or heat dissipation. It is related with the latent heat storage material arrangement method of the latent heat storage material which is the arrangement mode of the latent heat storage material when it is housed in the inside, and the latent heat storage tank in which the latent heat storage material is provided by this internal storage method.

  Latent heat storage material (PCM: Phase Change Material) has the physical property of storing or radiating heat using the input and output of latent heat that accompanies phase change, storing the waste heat that is originally discarded, and requiring the stored heat The energy can be effectively used without being wasted by taking it out according to the conditions. The latent heat storage material is filled in the heat storage material container, and is stored in the heat storage material container in a state where the heat storage material container is sealed so as not to leak outside. The heat storage material container is made of a resin film bag that allows heat to move between the heat medium such as water and the latent heat storage material, and is formed into a flat shape that can ensure a larger heat contact area. Has been. In the heat storage material container, the surface portion on the long side mainly serves as a heat transfer surface that transfers heat between the heat medium and the latent heat storage material.

  Such a heat storage material containing a latent heat storage material is placed in a horizontal orientation laid down toward the side wall side of the heat storage tank, stacked in multiple stages, or placed in a vertical position toward the upper side of the latent heat storage tank In various arrangement forms such as a horizontal arrangement and a plurality of arrangements, it is accommodated in a state completely immersed in water or the like. The latent heat storage tank of patent document 1 is disclosed as an example of the latent heat storage tank which arrange | positioned the thermal storage material accommodation tool with the attitude | position of vertical installation.

  Patent Document 1 discloses a plurality of rows of latent heat storage bags filled with a latent heat storage material made of sodium acetate trihydrate and sealed in a film-like pouch laminated with aluminum foil and a synthetic resin, in the latent heat storage tank. It is the arranged latent heat storage tank. In Patent Document 1, electrode application means for applying an electric field shock between the electrodes is provided outside the latent heat storage tank, the lead wire of the electrode application means is wired to the latent heat storage bag through the tank, and the electrode is connected to the latent heat storage bag. Is provided. The aluminum foil forming the pouch also functions as a lead wire for the electrode application means. In Patent Document 1, for the purpose of releasing supercooling and solidifying the latent heat storage material, an impact due to an electric field shock is applied to the latent heat storage material in the latent heat storage bag.

JP-A-2015-94519

  However, like the lead wire of Patent Document 1 existing in the heat medium in the latent heat storage tank, an inhibitor that has nothing to do with heat conduction regardless of the function associated with the latent heat storage material is contained in the heat medium. If the heat storage material container filled with the latent heat storage material is present, when the heat storage from the heat medium to the latent heat storage material or the heat dissipation from the latent heat storage material to the heat medium, the inhibitor is It will be harmful in conducting. In general, melts of inorganic salt hydrates tend to be acidic or basic, and aluminum, an amphoteric metal, dissolves both acidic and basic melts in inorganic salt hydrates. . In the case of Patent Document 1, since the melt of sodium acetate trihydrate exhibits basicity, aluminum is dissolved in the melt of sodium acetate trihydrate. For this reason, if the aluminum foil forming the pouch touches the melt of sodium acetate trihydrate, the aluminum foil will deteriorate and the pouch will be damaged, and the latent heat storage material will leak into the heat medium. There is a risk of it. In addition, if an inhibitor such as a lead wire is present in the heat medium in the latent heat storage tank, the space is occupied by the inhibitor instead of the space that can accommodate further latent heat storage material. Furthermore, the capacity of the latent heat storage material that can be accommodated in the latent heat storage tank is limited, and the amount of heat that can be stored in the entire latent heat storage tank is reduced.

  By the way, in the heat storage material container containing the latent heat storage material, air mixed when the latent heat storage material is stored is inherent. When the heat storage material container containing the latent heat storage material is stored in the latent heat storage tank and the latent heat storage material is in the liquid phase, the latent heat storage material melts under the heat storage material due to its own weight, On the upper side of the material container, a gap due to the mixed air is inevitably formed. The volume of the gap portion also changes depending on the volume variation of the latent heat storage material. When such a heat storage material container containing a latent heat storage material is disposed in the latent heat storage tank in a lateral orientation, the upper surface of the heat storage material container and the entire lower surface thereof serve as a heat transfer surface with the heat medium.

  At this time, the air mixed in the heat storage material container forms a wide gap in contact with the entire top surface of the heat storage material container, and heat is stored from the heat medium to the latent heat storage material via the heat storage material container. When the heat is radiated from the latent heat storage material to the heat medium, the ratio of blocking the heat conduction in the gap increases, leading to a decrease in heat conduction. For this reason, the wide gap that contacts the heat transfer surface becomes an impediment to heat conduction. Furthermore, if the heat storage material containers containing latent heat storage materials are arranged in a plurality of stages in a horizontal orientation, the heat transfer surfaces of the stacked heat storage material containers containing latent heat storage materials will be in close contact with each other. Water or the like (heat medium) does not flow to the heat transfer surface, which causes a decrease in heat conduction efficiency.

  On the other hand, if the heat storage material container containing a latent heat storage material is arrange | positioned in a latent heat storage tank with the attitude | position facing vertically like patent document 1, the side surface of a heat storage material container will be a heat-transfer surface with a heat medium. A narrow gap is formed on the upper side of the heat storage material container, but the contact area between the gap and the side surface of the heat storage material container is the same as that of the heat storage material container. It is only part of the area of the entire side of the container. Therefore, the vertical orientation can suppress a decrease in heat conduction compared to the horizontal orientation.

On the other hand, the latent heat storage material may be an inorganic salt hydrate such as ammonium alum 12 hydrate (AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O). In this case, immediately after using the latent heat storage material, when the latent heat storage material is in a solid state, inorganic salts such as ammonium alum (AlNH ₄ (SO ₄ ) ₂ ) and water molecules (H ₂ O) are Combined by interaction, a uniform crystal structure is formed. Further, when the latent heat storage material is in a melt state, an inorganic salt such as ammonium alum and water molecules are uniformly mixed. However, when this heat storage material container containing the latent heat storage material is arranged in a vertical orientation in the latent heat storage tank, while repeating the cycle of heat storage and heat dissipation multiple times, due to the density difference (specific gravity difference) of each component, Phase separation in which the inorganic salt and water are separated occurs.

  Furthermore, in the case of a latent heat storage material composition in which additives such as a supercooling inhibitor and a melting point modifier are blended with this latent heat storage material, the composition is repeated while repeating the cycle of heat storage and its heat release a plurality of times. The degree of mixing of the components constituting the component becomes non-uniform due to the density difference between the components. Compared to the horizontal orientation, when the thermal storage material containing the latent heat storage material is placed in the latent heat storage tank in the vertical orientation, the height of the layer of the latent heat storage material filled is increased. Phase separation and component non-uniformity are noticeable. If such phase separation or component non-uniformity occurs in the heat storage material container, the heat storage performance of the latent heat storage material cannot be exhibited.

  The present invention has been made to solve the above-described problems, and a latent heat storage material for storing or radiating heat is accommodated inside the heat storage material container, and the latent heat storage tank is provided via the heat storage material container. In conducting heat conduction between the heat medium and the latent heat storage material in the heat storage tank arrangement method of the latent heat storage material that can efficiently conduct the heat while maintaining the heat storage and release performance of the latent heat storage material, And it aims at providing a latent heat storage tank.

In order to achieve the above object, a method for disposing a latent heat storage material in a heat storage tank according to the present invention has the following configuration.
(1) A latent heat storage material that stores or releases heat by utilizing the input and output of latent heat associated with phase change is sealed inside the heat storage material container, and the latent heat storage material is used to form a heat medium in the latent heat storage tank. The latent heat storage material is an arrangement mode of the latent heat storage material when the latent heat storage material is in the state of being stored in the heat storage material storage tool when transferring heat through the heat storage material storage tool In the heat storage tank arrangement method, a thickener that increases the viscosity of the melt of the latent heat storage material in a liquid phase is blended, and the latent heat storage material and the thickener are incorporated in the heat storage material container. The latent heat storage material composition containing the latent heat storage material composition, and the latent heat storage material composition when the latent heat storage material composition in the heat storage material container is projected downward from the upper position of the heat medium in the vertical direction. The cross-sectional area of the composition is defined as the vertical cross-sectional area Sv and horizontal through the heat medium. When the cross-sectional area of the latent heat storage material composition when projected toward the direction is a horizontal cross-sectional area Sh, in the latent heat storage material composition in the state of being stored in the heat storage material container, Sv < Sh ... Formula (1) The said thermal storage material container in the state which accommodated the conditions of the said Formula (1), and accommodated the said latent heat storage material composition is a tolerance | permissible_range for the thickness change along a horizontal direction. It is characterized in that it is housed in the heat medium in a restrained state and in a state in which the arrangement posture is maintained by guide means that restricts the inside.
(2) In the method for disposing a latent heat storage material in a heat storage tank described in (1), the heat storage material container is a bag or container made of a material that can be fused with a multilayer structure in which a resin and a metal are laminated. And having a fusion part sealed by fusion on at least a part of the outer peripheral edge forming the outer contour of the heat storage material container.
(3) In the method for disposing a latent heat storage material in a heat storage tank described in (2), the heat storage material container is made of polyethylene (PE), polypropylene (PP: polypropylene), or polyethylene terephthalate (PET). ), And a laminated resin bag in which aluminum is vapor-deposited on a film-like resin layer containing at least one of the above materials.
(4) In the method for disposing a latent heat storage material in a heat storage tank described in (2) or (3), the latent heat storage material composition is overlapped in a multiple manner like a nest by a plurality of the heat storage material containers. It is characterized in that it is housed under the condition of the
(5) In the method for disposing a latent heat storage material in a heat storage tank according to any one of (1) to (4), the guide means stores the heat storage material in a state of storing the latent heat storage material composition. One or a plurality of tools, an internal space that can be accommodated in a state where the heat storage surface of the heat storage material accommodation tool can contact the heat medium, and at least a side that surrounds the internal space has a mesh shape It is characterized by being formed.
(6) In the method for disposing a latent heat storage material in a heat storage tank according to any one of (1) to (5), the latent heat storage material is made of an inorganic salt hydrate, and is included in the inorganic salt hydrate. The inorganic salt hydrate is generated by hydrating the anhydrous product from which hydrated water has been removed and the added water in the heat storage material container, and enclosed in the heat storage material container. It is characterized by this.
(7) In the method for disposing a latent heat storage material in a heat storage tank described in any one of (1) to (6), a main component of the latent heat storage material is alum hydrate. .
(8) In the method for disposing a latent heat storage material in a heat storage tank described in (7), the alum hydrate is ammonium alum 12 hydrate (AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O) or potassium It is alum 12 hydrate (AlK (SO ₄ ) ₂ · 12H ₂ O).
(9) In the method for disposing a latent heat storage material in a heat storage tank according to any one of (1) to (8), the thickener is a substance belonging to a sugar alcohol.
(10) In the method for disposing a latent heat storage material in the heat storage tank described in (9), the thickener is mannitol (C ₆ H ₁₄ O ₆ ).
(11) In the method for disposing a latent heat storage material in a heat storage tank according to any one of (1) to (8), the thickener is a water-soluble polysaccharide belonging to a heteropolysaccharide, Based on the interaction between water and cations contained in the latent heat storage material composition, it is a gellan gum equivalent substance having physical properties that increase the viscosity of the melt of the latent heat storage material composition in a liquid phase. To do.

  In the method for disposing a latent heat storage material in a heat storage tank according to the present invention, the term “gellan gum equivalent substance” means, for example, gellan gum and a substance corresponding to gellan gum having the same physical properties as gellan gum. Say. That is, gellan gum is a polymer compound made of a polymer in which monosaccharides are linked in a straight chain, as shown in the chemical structure below.

A monomer (monomer) serving as a polymer substrate is composed of 4 sugar molecules in total of 3 types, consisting of 2 D-glucose residues, 1 D-glucuronic acid residue, and 1 L-rhamnose residue. Consists of. Although gellan gum is a high molecular compound having a large molecular weight, it has water solubility. This is because gellan gum has a carboxy group (denoted as “COOH” in the chemical structure) which is a monovalent functional group on the D-glucuronic acid residue. That is, some of the carboxy groups in water release protons (in the chemical structure, “H ⁺ ”) and carry a negative charge (in the chemical structure, expressed as “COO ⁻ ”), thereby allowing the gellan gum molecules to interact with each other. Gellan gum is water-soluble due to electrostatic repulsion and dispersion in water. Gellan gum dispersed in water has a random coil-like structure at high temperatures, but forms a double helical structure when cooled.

Furthermore, when a cation is supplied to gellan gum in such a state from the outside, a negatively charged carboxy group and a positively charged cation (cation) in the D-glucuronic acid residue. ) (Denoted as “M ⁺ ” in the chemical structure) is attracted to each other. At this time, when the cation is monovalent, the monovalent charge of the cation and the negative charge on the carboxy group of the gellan gum cancel each other, and the electrostatic repulsion between the gellan gums forming a double helix structure is eliminated. The Furthermore, these double helix structures are associated by hydrogen bonds that interact between oxygen atoms and hydrogen atoms contained in the double helix structure. When the cation is divalent, the negatively charged carboxy group included in each double helix structure is cross-linked through electrostatic interaction with the positively charged cation, and thus these double helix structures. Helical structures associate with each other.

  Due to such association, the gellan gum supplied with the cation gels. As a substance corresponding to such gellan gum, regardless of whether it is a single species or a plurality of species, a high molecular compound obtained by linking a plurality of sugar molecules is used as a target, and for example, a saccharide group such as a carboxy group is hydrophilic. Having a functional group that imparts water solubility to the polymer compound and is negatively charged by ionization in water, and in the presence of water, a cation supplied from the outside and the functional group Among these, substances that enable the formation of electrostatic interactions fall under this category. In addition, as a physical property equivalent to the physical property of gellan gum, it has water solubility, has the property of forming at least a three-dimensional structure such as a helical structure by the interaction between functional groups in the molecule, and in the coexistence with water, This characteristic is that the helical structure associates by an electrostatic interaction between a cation and a functional group supplied from the outside to form a network structure to promote gelation. In the latent heat storage material composition according to the present invention, in addition to gellan gum, a substance having such characteristics is defined as “gellan gum equivalent substance”.

(12) In the method for disposing a latent heat storage material in a heat storage tank described in (11), the thickener is gellan gum.

Moreover, in order to achieve the said objective, the latent heat storage tank which concerns on this invention has the following structures.
(13) A latent heat storage material composition obtained by blending an additive that adjusts the physical properties of the latent heat storage material with a latent heat storage material that stores or radiates heat using the input and output of latent heat accompanying phase change, and the latent heat In the latent heat storage tank, comprising: a heat medium that is a medium for transferring heat to and from the heat storage material composition; and a heat storage material container that houses the latent heat storage material composition therein, the latent heat storage material The composition is disposed by the method for disposing a latent heat storage material in a heat storage tank described in any one of (1) to (12).

The operation and effect of the method for arranging the latent heat storage material of the present invention having the above-described configuration in the heat storage tank will be described.
(1) A latent heat storage material that stores or releases heat by utilizing the input and output of latent heat associated with phase change is sealed inside the heat storage material container, and the latent heat storage material is used to form a heat medium in the latent heat storage tank. The latent heat storage material is an arrangement mode of the latent heat storage material when the latent heat storage material is in the state of being stored in the heat storage material storage tool when transferring heat through the heat storage material storage tool In the heat storage tank arrangement method, a thickener that increases the viscosity of the melt of the latent heat storage material in a liquid phase is blended, and the latent heat storage containing the latent heat storage material and the thickener is contained in the heat storage material container. That the material composition is contained, the cross-sectional area of the latent heat storage material composition when the latent heat storage material composition in the heat storage material container is projected downward from the upper position of the heat medium in the vertical direction, Latent heat storage material with side sectional area Sv and projected in the horizontal direction through the heat medium Assuming that the cross-sectional area of the product is the horizontal cross-sectional area Sh, in the latent heat storage material composition in the state of being stored in the heat storage material container, the condition of Sv <Sh (1) Formula (1) The heat storage material container in a state of containing the latent heat storage material composition is constrained by the guide means that limits the change in thickness along the horizontal direction to within an allowable range, and is disposed in the orientation. It is characterized in that it is housed in a heat medium while maintaining the above. Due to this feature, when the latent heat storage material composition is in a melt state, the melt of the latent heat storage material composition moves below the heat storage material container when the heat storage is completed, and the latent heat storage material composition is contained. Since the thickness of the heat storage material container is not uniform on the upper and lower sides, the heat medium can easily flow between the heat storage material containers containing the latent heat storage material composition. Moreover, since the aspect of the heat storage material container that contains the expanded latent heat storage material composition is different for each adjacent heat storage material container, even if it contacts locally at the expansion portion, the contact area is compared. Can be kept small. Moreover, even if the heat storage material encapsulated pack containing the latent heat storage material composition in the heat storage material container is arranged in the latent heat storage tank in a vertical orientation, in the melt of the latent heat storage material composition, The state in which the constituent components are uniformly dispersed can be maintained. Therefore, even if the latent heat storage material composition repeats a phase change between the liquid phase and the solid phase, the distribution of the constituent components can be kept uniform. As a result, it can suppress that physical properties, such as melting | fusing point and a freezing point, of a latent heat storage material composition are fluctuate | varied.

  Therefore, according to the method for disposing a latent heat storage material in a heat storage tank according to the present invention, the latent heat storage material that stores heat or releases the heat is stored inside the heat storage material container, and the latent heat storage tank is interposed through the heat storage material container. When conducting heat conduction between the inner heat medium and the latent heat storage material, an excellent effect is achieved in that heat conduction can be performed efficiently while maintaining the heat storage and heat dissipation performance of the latent heat storage material.

In the method for disposing a latent heat storage material in a heat storage tank described in (2), the heat storage material container is a bag or container made of a material that can be fused with a multilayer structure in which a resin and a metal are laminated, and the heat storage It is characterized by having a fusion part sealed by fusion in at least a part of the outer peripheral edge forming the outline of the material container. By this feature, the rigidity of the heat storage material encapsulated pack in which the latent heat storage material composition is accommodated in the heat storage material container is enhanced by the fused portion. Further, since the heat transfer surface of the heat storage material encapsulated pack is on the inner side of the fusion part, even if the melt of the latent heat storage material composition moves below the heat storage material container when the heat storage is completed, the heat storage material container The thickness of the heat storage material container does not change greatly between the upper and lower portions of the heat storage material container, and the heat transfer inhibition by the latent heat storage material composition itself moved downward can be reduced.

In the method for disposing a latent heat storage material in the heat storage tank described in (3), the heat storage material container is at least one of polyethylene (PE), polypropylene (PP: polypropylene), or polyethylene terephthalate (PET). It is a bag having a laminated structure in which aluminum is vapor-deposited on a film-like resin layer containing such a material. With this feature, in the heat storage material encapsulated pack in which the latent heat storage material composition is accommodated in the heat storage material container, if the thickness of all the heat storage material containers is about 100 μm, for example, heat conduction in the heat storage material container There is almost no decrease in the temperature, and heat storage to the latent heat storage material and heat radiation from the latent heat storage material can be sufficiently performed between the latent heat storage material of the latent heat storage material composition and the heat medium. Moreover, even if the temperature of the heat medium is close to 100 ° C., for example, the heat resistance of the heat storage material-enclosed pack can be secured. Moreover, since aluminum has a structure deposited on the film-like resin layer, the heat medium in the latent heat storage tank and the gas such as oxygen come into contact with the latent heat storage material composition through the film-like resin layer. It can be blocked by an aluminum coating layer.

In the arrangement method of the latent heat storage material in the heat storage tank described in (4), the latent heat storage material composition is accommodated by a plurality of heat storage material accommodation devices in a nested manner, such as nested. It is characterized by that. Due to this feature, when the heat storage material encapsulated pack containing the latent heat storage material composition in the heat storage material container is moved into or out of the latent heat storage tank, or due to aging deterioration of the heat storage material container body, etc. Even if the heat storage material container covering the latent heat storage material composition is damaged, the heat storage material container has a multilayer structure in which the heat storage material container is overlapped, thereby preventing leakage of the latent heat storage material composition to the outside. be able to.

In the method for disposing a latent heat storage material in the heat storage tank described in (5), the guide means includes one or a plurality of heat storage material containers in a state in which the latent heat storage material composition is stored, on the heat transfer surface of the heat storage material container. It has an internal space that can be accommodated in a state where it can come into contact with the heat medium, and at least a side portion that surrounds the internal space is formed in a net shape having openings. With this feature, after ensuring the contact between the heat transfer surface of the heat storage material encapsulated pack containing the latent heat storage material composition in the heat storage material container and the heat medium, the latent heat storage material composition in the heat storage material encapsulated pack Even if some deformation occurs in the heat storage material-enclosed pack due to this phase change, the arrangement state of the heat storage material-enclosed pack accommodated in the internal space can be kept almost constant in the latent heat storage tank.

In the method for disposing the latent heat storage material in the heat storage tank described in (6), the latent heat storage material is made of an inorganic salt hydrate, and an anhydrous product from which hydrated water contained in the inorganic salt hydrate has been desorbed. It is characterized in that water is hydrated in the heat storage material container to produce an inorganic salt hydrate and enclosed in the heat storage material container. Because of this feature, the gap between adjacent powders before filling the container with the anhydrous product is filled with water added to the container during the hydration reaction, so the latent heat storage material occupies the internal volume of the container. The volume filling rate is greatly improved as compared with the case where the powdered inorganic salt hydrate is directly filled in the container. In addition, since the generation of gaps is suppressed, the time required for heat conduction between the latent heat storage material and the heat medium in the latent heat storage tank is shortened in comparison with such a case. Performance is high. In addition, in order to produce a latent heat storage material and a latent heat storage material composition containing an additive thereto, no heating equipment is required, and such a latent heat storage material composition is kept at room temperature in a container. It can be generated easily. Moreover, even with a relatively high latent heat storage material composition such as about 90 ° C., the liquid phase latent heat storage material composition or the like is not directly handled, The sealing operation is safe.

In the method for disposing a latent heat storage material in a heat storage tank described in (7), the main component of the latent heat storage material is alum hydrate. Due to this feature, among various types of inorganic salt hydrates, for example, a latent heat storage material using alum hydrate such as ammonium alum 12 hydrate has a relatively large physical property due to the phase change. Have. Therefore, in such a latent heat storage material having physical properties, the amount of heat storage that can store heat is relatively large. Moreover, the latent heat storage material composition containing the latent heat storage material which is alum hydrate is excellent at the point which has the heat storage-and-dissipation performance which heat-stores a large capacity | capacitance heat and thermally radiates it.

In the method for disposing a latent heat storage material in a heat storage tank described in (8), alum hydrate is ammonium alum 12 hydrate (AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O) or potassium alum 12 hydrate. it is an object _{(AlK (SO 4) 2 ·} 12H 2 O), and wherein. Due to this feature, ammonium alum 12 hydrate and potassium alum 12 hydrate are easily distributed in the market and are inexpensive.

In the method for disposing a latent heat storage material in a heat storage tank described in (9), the thickener is a substance belonging to a sugar alcohol. Due to this feature, when the inorganic salt hydrate is alum hydrate such as ammonium alum 12 hydrate, the thickener is easily dissolved in water, which is a constituent of the inorganic salt hydrate, and has a composition. The heat storage material composition thus obtained is chemically stable.

In the method for disposing a latent heat storage material in a heat storage tank described in (10), the thickener is mannitol (C ₆ H ₁₄ O ₆ ). Due to this feature, mannitol increases the viscosity of the melt of the latent heat storage material in the liquid phase, phase separation between components constituting the latent heat storage material composition, and components constituting this latent heat storage material composition Thus, non-uniformity of components due to density difference can be prevented for components having different densities. Moreover, since mannitol is nontoxic and non-dangerous, it is easy to handle and inexpensive.

In the method for disposing a latent heat storage material in a heat storage tank described in (11), the thickener is a water-soluble polysaccharide belonging to a heteropolysaccharide, and is composed of water and a cation contained in the latent heat storage material composition. It is characterized by being a gellan gum equivalent substance having physical properties that increase the viscosity of the melt of the latent heat storage material composition in the liquid phase based on the interaction. In the method for disposing a latent heat storage material in a heat storage tank described in (12), the thickener is gellan gum. Due to this feature, gellan gum itself does not have heat storage characteristics, but by adding gellan gum or the like to a latent heat storage material such as ammonium alum 12 hydrate, for example, a small amount of 1.0 wt% or less, the latent heat storage material The viscosity of the melt of the composition can be increased, and separation of constituent components in the latent heat storage material composition can be more effectively suppressed. For example, when the thickener is gellan gum or the like, for example, even if the melt such as ammonium alum 12 hydrate or potassium alum 12 hydrate has an acidic property, the exemplified gellan gum is resistant to acid. Therefore, the latent heat storage material composition will not be denatured or altered over time due to the addition of gellan gum or the like.

Moreover, the effect | action and effect of the latent-heat storage tank of this invention which has the said structure are demonstrated.
(13) A latent heat storage material composition obtained by blending an additive that adjusts the physical properties of the latent heat storage material with a latent heat storage material that stores or releases heat using the input and output of latent heat accompanying phase change, and latent heat storage In the latent heat storage tank provided with a heat medium that is a medium for transferring heat to and from the material composition, and a heat storage material container that stores the latent heat storage material composition therein, the latent heat storage material composition is , (1) thru | or (12), It arrange | positions by the arrangement | positioning method in the thermal storage tank of the latent heat storage material. With the above-described arrangement method of the latent heat storage material in the heat storage tank, the heat transfer rate between the heat medium and the latent heat storage material can be made relatively high with respect to the latent heat storage material in the latent heat storage material composition. Therefore, the supercooling phenomenon of the latent heat storage material composition is prevented, the state change accompanying the phase change of the latent heat storage material composition (function as a heat storage material) is stabilized, and the latent heat using such a latent heat storage material composition The heat storage tank can be realized with high reliability for the transfer of thermal energy between the heat supply source and the heat supply destination.

It is the schematic diagram which illustrated the latent heat storage tank which concerns on this embodiment. It is explanatory drawing which shows typically the latent heat storage material composition accommodated in the latent heat storage tank which concerns on this embodiment. It is explanatory drawing which shows typically the latent heat storage material unit corresponding to the arrangement method in the thermal storage tank of the latent heat storage material which concerns on Example 1 of this embodiment. It is a flowchart which shows the preparation process of the latent heat storage material composition with which the thermal storage material accommodation unit which concerns on Example 1 comprised. It is a flowchart which shows the preparation process of the thermal storage material enclosure pack of the thermal storage material accommodation unit which concerns on this embodiment. It is a schematic diagram which shows the cross section of the thermal storage material enclosure pack when it is the arrangement method in the thermal storage tank of the latent heat storage material which concerns on Example 1. FIG. It is explanatory drawing which shows typically the state of the heat storage material enclosure pack accommodated in the latent heat storage material unit which concerns on Example 1. FIG. It is explanatory drawing which shows typically the latent heat storage material unit corresponding to the arrangement method in the thermal storage tank of the latent heat storage material which concerns on the comparative example 1 of this embodiment. It is a flowchart which shows the preparation process of the latent heat storage material composition with which the thermal storage material accommodation unit which concerns on the comparative example 1 comprised. It is a schematic diagram which shows the cross section of the thermal storage material enclosure pack when it is the arrangement method in the thermal storage tank of the latent heat storage material which concerns on the comparative example 1. FIG. It is explanatory drawing which shows typically the state of the heat storage material enclosure pack accommodated in the latent heat storage material unit which concerns on the comparative example 1. FIG. In the verification experiment 1 in which the relationship between the amount of heat stored per 1 L of the latent heat storage material composition and the time was investigated for the latent heat storage material composition housed in the arrangement method of the latent heat storage material in the heat storage tank according to Example 1. It is the graph which showed the measurement result of the heat storage amount of a sample. It is a graph which shows the measurement result of the heat radiation amount by the same sample following FIG. As in FIG. 12, in the verification experiment 1 in which the relationship between the heat storage amount per 1 L of the latent heat storage material composition and the time was investigated, the latent heat storage material composition accommodated by the latent heat storage material placement method in the heat storage tank according to Comparative Example 1 It is the graph which showed the measurement result of the amount of heat storage to a thing. It is a graph which shows the measurement result of the thermal radiation amount by the same sample following FIG. 6 is a table summarizing the results of the heat storage rate and the heat release rate by comparing the sample according to Example 1 and the sample according to Comparative Example 1 with respect to Verification Experiment 1 and Verification Experiment 2. It is explanatory drawing which showed typically the site | part which measures the thickness of a heat storage material enclosure pack by the confirmation investigation for the heat storage material enclosure pack arrange | positioned by the arrangement method in the heat storage tank of the latent heat storage material which concerns on Example 1. FIG. is there. It is the table | surface which put together the measurement result of the thickness of the thermal storage material enclosure pack by confirmation investigation.

(Embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a latent heat storage material composition according to the present invention and a latent heat storage tank using the latent heat storage material composition will be described in detail with reference to the drawings. The arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment is to seal the latent heat storage material that stores or radiates heat by using the input and output of the latent heat accompanying the phase change inside the heat storage material container. The latent heat when the latent heat storage material is housed in the heat storage material container when the heat storage material performs heat transfer with the heat medium in the latent heat storage tank via the heat storage material container. It is an arrangement | positioning aspect of a thermal storage material.

  The latent heat storage tank is a medium for transferring heat between a latent heat storage material composition obtained by blending an additive that adjusts the physical properties of the latent heat storage material with the latent heat storage material, and the latent heat storage material composition. And a heat storage material container that houses the latent heat storage material composition therein. In the present embodiment, the latent heat storage material arrangement method of the latent heat storage material according to Example 1 and the latent heat storage material arrangement method of the latent heat storage material according to Comparative Example 1 will be described. First, common parts of Example 1 and Comparative Example 1 will be described, then Example 1 will be described, and then Comparative Example 1 will be described.

<Common part between Example 1 and Comparative Example 1>
First, an outline of the latent heat storage tank will be briefly described. FIG. 1 is a schematic view illustrating a latent heat storage tank according to this embodiment. A latent heat storage tank 80 as shown in FIG. 1 includes, for example, a heat supply source such as a cogeneration (Cogeneration or Combined Heat and Power) gas engine system used for power generation in a hospital or a building, and exhaust generated by the heat supply source. It is installed between the equipment of the heat supply destination using the heat energy possessed by the heat. The latent heat storage tank 80 is connected to a first heat exchanger and a second heat exchanger (not shown) by piping, and the latent heat storage tank 80, the first heat exchanger, and the second heat exchanger are circulated. It communicates with the piping system that makes the road. The volume of the latent heat storage tank 80 is 160 L in this embodiment.

  In the latent heat storage tank 80, as will be described in detail later, the heat storage material storage units 70 and 70A are stored in a state of being immersed in the heat medium 83. The latent heat storage tank 80 used in Example 1 and Comparative Example 1 is made of stainless steel, and is formed in a rectangular parallelepiped with a length of 40 cm × width of 40 cm × height of 140 cm. The heat medium 83 is water in the present embodiment, and the depth of the heat medium 83 is 100 cm when the heat storage material accommodation units 70 and 70A are accommodated. The heat storage material accommodation units 70, 70A are provided with baskets 71, 71A (guides) for the heat storage material encapsulated pack 1 in which the latent heat storage material composition 3 including the latent heat storage material 10, the thickener 22 and the like is enclosed in an enclosing bag 50. (Means) (refer to FIG. 3 and FIG. 8). For convenience of explanation, FIG. 1 shows a latent heat storage tank 80 in which only one heat storage material storage unit 70 or the like is stored in the heat medium 83. A plurality of the accommodation units 70 and the like may be accommodated in the latent heat storage tank 80, and the quantity and arrangement form of the heat storage material accommodation units and the like are not limited.

  In the latent heat storage tank 80, a heat medium 83 such as water heated to about 90 ° C. is supplied from the intake port 81 through the first heat exchanger by the exhaust heat of the heat supply source. In the heat storage material accommodation unit 70 and the like, the latent heat storage material 10 in the latent heat storage material composition 3 stores heat in the temperature range of 80 to 90 ° C. via the encapsulating bag 50 by the heat medium 83 in the latent heat storage tank 80. Do. Further, the latent heat storage material 10 is radiated to the heat medium 83 in the latent heat storage tank 80 by this heat storage in this temperature band, and the heat medium 83 warmed by heat transfer passes through the drain port 82 to the second heat exchanger. Washed away. And the heat which the heat medium 83 has is utilized as a heat source (heat energy) for heat supply destination facilities, such as a hot water supply facility (not shown) and an air conditioning facility which performs air conditioning, via the second heat exchanger. Is done. Thereafter, the heat medium 83 deprived of heat by the second heat exchanger is returned to the first heat exchanger, and is again heated by the exhaust heat of the heat supply source in the first heat exchanger. In the latent heat storage tank 80, the circulation of the heat medium 83 accompanied with a series of heat exchanges in this way is set as one cycle, and this cycle is repeated a plurality of times.

  Next, the latent heat storage material composition 3 will be described with reference to FIG. FIG. 2 is an explanatory view schematically showing a latent heat storage material composition housed in the heat storage material housing unit shown in FIG. 1. As shown in FIG. 2, the latent heat storage material composition 3 is obtained by blending two types of additives 20 with the latent heat storage material 10. In FIG. 2, both the melting point adjusting agent 21 and the thickening agent 22 are shown as two types of additives 20, but in Example 1 described later, the thickening agent 22 that also serves as the melting point adjusting agent 21. Therefore, additive 20 (melting point adjusting agent 21) indicated by cross hatching in FIG. 2 is not included. On the other hand, in Comparative Example 1 to be described later, the melting point adjusting agent 21 and the thickening agent 22 are the additives 20 independent of each other, and therefore, the additive 20 (melting point adjusting agent 21) shown by cross hatching is outlined. Both of the indicated additive 20 (thickener 22) are present.

The latent heat storage material 10 is a latent heat storage material that enables heat storage or heat dissipation by entering and exiting latent heat associated with phase change. The latent heat storage material 10 is a heat storage material whose main component is alum hydrate, and in this embodiment, ammonium alum 12 hydrate (ammonium sulfate aluminum · 12 water: AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O). (Hereinafter simply referred to as “ammonium alum”). Ammonium alum has a melting point of 93.5 ° C. and is acidic (in the case of a 1% aqueous solution, the pH is about 3.6), and is a solid substance at room temperature. Therefore, even if ammonium alum is heated to about 90 ° C. below the melting point as a single substance, ammonium alum hardly melts and cannot store latent heat.

In addition, in this embodiment, the latent heat storage material 10 which is the main component of the latent heat storage material composition 3 is ammonium alum 12 hydrate (ammonium sulfate aluminum 12 water: AlNH ₄ (SO ₄ ) ₂ 12H ₂ O). did. However, the latent heat storage material is composed of an inorganic salt hydrate, and besides ammonium alum, for example, potassium alum 12 hydrate (AlK (SO ₄ ) ₂ · 12H ₂ O), chrome alum (CrK (SO ₄ ) ₂・ 12H ₂ O), iron alum (FeNH ₄ (SO ₄ ) ₂ .12H ₂ O), etc. Monovalent cation sulfate M ^I ₂ (SO ₄ ) and trivalent cation sulfate M ^III “Alum” which is a bisulfate with ₂ (SO ₄ ) ₃ may be used. Further, the trivalent metal ions contained in the “alum” may be metal ions such as cobalt ions and manganese ions in addition to aluminum ions, chromium ions and iron ions. Further, the latent heat storage material 10 may be a mixture containing at least two kinds of substances belonging to “Alum” or a heat storage material mainly composed of a mixed crystal.

  The two additives (first additive and second additive) are water-soluble additives that play a role of adjusting the physical properties of the latent heat storage material 10. The first additive 20 is a melting point adjusting agent 21 that adjusts the melting point of the latent heat storage material 10 to an arbitrary temperature as necessary. The second additive 20 is a thickener 22 that increases the viscosity of the melt of the latent heat storage material composition 3 in a liquid phase. In the present embodiment, the melting point adjusting agent 21 and the thickener 22 are exemplified as the additive 20 to be blended with the latent heat storage material composition 3, but in addition to the thickener 22, the additive 20 is blended with the latent heat storage material composition. The additive is not limited to the melting point adjusting agent 21, and examples thereof include a supercooling preventing agent that promotes crystallization of the heat storage material in a melt state, and a colorant that colors the latent heat storage material composition. .

<Example 1>
In the method for arranging the latent heat storage material in the heat storage tank according to the first embodiment, the method for producing the latent heat storage material composition 3, the use of the additive 20 serving as the melting point adjusting agent 21 and the thickener 22, and the size of the basket 71. The aspect of the heat storage material accommodation unit 70 is different from the arrangement method of the latent heat storage material in the heat storage tank according to Comparative Example 1. The additive 20 is a substance that belongs to a sugar alcohol, and in Example 1, is mannitol (C ₆ H ₁₄ O ₆ ) that also serves as the melting point adjusting agent 21 and the thickener 22.

  First, the preparation method of the latent heat storage material composition 3 is demonstrated using FIG. FIG. 4 is a flowchart showing a production process of the latent heat storage material composition provided in the heat storage material accommodation unit according to the first embodiment.

  As described above, the heat storage material-enclosed pack 1 is accommodated in the latent heat storage tank 80. As shown in FIGS. 4 and 5, the latent heat storage material composition 3 is filled in the leakage prevention inner bag 40 as the heat storage material enclosure 2. The heat storage material enclosure 2 includes a heat storage material enclosed in the first enclosure bag 50A on the inner side of the two encapsulated bags 50 (first enclosure bag 50A, second enclosure bag 50B) (heat storage material container). It is accommodated as a prepack 1A. And this heat storage material enclosure prepack 1A is accommodated in the outer 2nd enclosure bag 50B as an aspect which accommodates the heat storage material enclosure pack 1 in the latent heat storage tank 80. FIG. In the present embodiment, the leakage preventing inner bag 40 is, for example, a packaging bag made of thin polyethylene (PE) having a rectangular shape of 23 cm long × 12 cm wide and having a thickness of about 0.02 mm.

  The latent heat storage material composition 3 contained in the heat storage material enclosure 2 and the latent heat storage material 10 as the main component thereof are ammonium alum which is a kind of inorganic salt hydrate. In Example 1, an anhydrous salt from which hydrated water contained in the inorganic salt hydrate is eliminated and the added water are hydrated in the inner bag 40 for preventing leakage, thereby generating an inorganic salt hydrate. And the latent heat storage material 10 is produced | generated using the method of enclosing the inner bag 40 for leak prevention (heat storage material accommodation tool).

Specifically, as described above, the inorganic salt hydrate is ammonium alum 12 hydrate (ammonium ammonium sulfate · 12 water: AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O). It is calcined ammonium alum (AlNH ₄ (SO ₄ ) ₂ ) from which hydrated water (12H ₂ O) contained in ammonium alum 12 hydrate has been eliminated. The water is, for example, pure water, ion exchange water, tap water or the like.

  The method for enclosing a latent heat storage material in a bag according to Example 1 is as follows. After the baked ammonium alum 11 is pulverized to an average size of about 1 mm to obtain a powder state ((a) in FIG. 4), 48. 2 g is weighed and filled into the leakage preventing inner bag 40 through the opening 41 ((b) in FIG. 4). In addition, since the space | interval between particle | grains will become smaller when the magnitude | size of the particle | grains of the baking ammonium alum 11 becomes finer than about 1 mm on average, it is preferable.

On the other hand, 8.0 g of mannitol powder as additive 20 is weighed and put into a first bottle 91 made of polypropylene (PP) having a capacity of 250 ml together with water 12 at room temperature and stirred at room temperature. Thus, an aqueous mannitol solution 30 in which mannitol 20 is dissolved in water 12 is prepared ((c) in FIG. 4). Mannitol 20 is pulverized to an average size of about several hundred μm. The amount of water 12 input is the same as the amount of water required to produce ammonium alum hydrate 10 (latent heat storage material 10), which is a hydrate, of calcined ammonium alum 11 which is an anhydrous product, Alternatively, the amount of water exceeds the amount of water added. This amount of water is an amount corresponding to the hydration water (12H ₂ O) contained in ammonium alum hydrate 10. In Example 1, 43.8 g of pure water was weighed as the water 12. This is the amount of water necessary to make 48.2 g of calcined ammonium alum 11 into ammonium alum 12 hydrate 10 without excess or deficiency.

Next, after the baked ammonium alum 11 is filled in the inner bag 40 for preventing leakage, an aqueous mannitol solution is poured into the inner bag 40 for preventing leakage through the opening 41 ((d) in FIG. 4), and the inner bag 40 for preventing leakage is filled. The inner bag 40 for leakage prevention is allowed to stand horizontally until the hydration reaction between the calcined ammonium alum 11 and the water 12 is completed. As a result, the calcined ammonium alum 11, the water amount 12 corresponding to the hydrated water (12H ₂ O), and the mannitol 20 are mixed with each other in the leakage preventing inner bag 40. The mixture of the calcined ammonium alum 11 and the mannitol aqueous solution 30 at room temperature gradually solidifies through the slurry mixture 15 as shown in FIG. Thereby, the latent heat storage material composition 3 which mix | blended the mannitol 20 with the function of a melting | fusing point regulator and a thickener in the ammonium alum hydrate 10 produced | generated by the baked ammonium alum 11 and the water 12 is for leak prevention. It is generated in the inner bag 40.

  Next, the folded portion 42 on the opening 41 side of the leakage preventing inner bag 40 is folded back to close the leakage preventing inner bag 40. In the present embodiment, the leakage preventing inner bag 40 folded back by the folded portion 42 is, for example, a rectangle of 18 cm long × 12 cm wide. Thus, the heat storage material enclosure 2 in which the latent heat storage material composition 3 is accommodated in the inner bag 40 for preventing leakage is produced ((f) in FIG. 4).

  Next, the manufacturing process of the heat storage material enclosure pack 1 constituting the heat storage material accommodation unit 70 will be described with reference to FIG. FIG. 5 is a flowchart showing a process for producing a heat storage material enclosure pack of the heat storage material accommodation unit according to the present embodiment. The encapsulating bag 50 is formed in a size that can accommodate the heat storage material encapsulating material 2 through the opening 51, and is a flexible bag. The encapsulating bag 50 is non-deformable and hardly contracts even at a high temperature of about 100 ° C. It has heat and has a function of preventing the penetration of the heat medium 83 such as water. The enclosing bag 50 is a bag made of a material that can be fused and has a multilayer structure in which a resin and a metal are laminated.

  Specifically, in the present embodiment, the encapsulating bag 50 is, for example, a film containing at least one material such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or the like. A laminated bag having a structure of two or more layers in which aluminum is vapor-deposited on the outside of the resin film, and a packaging bag formed in a rectangular shape with a thickness of about 0.05 to 0.15 mm. is there. The enclosing bag 50 is used in a double bag structure in which two bags of different sizes are grouped as a set and wrapped in a double (first enclosing bag 50A, second enclosing bag 50B). The first enclosed bag 50A which is the inner side is a rectangular bag having a length of 21.5 cm and a width of 14.8 cm, and the outer second enclosed bag 50B is a rectangular bag having a length of 25.0 cm and a width of 17.3 cm. It is. The encapsulating bag 50 is for accommodating the heat storage material encapsulant 2 on the three sides of the outer peripheral edge forming the outer contour thereof, on the fusion part 54 of about 1 cm sealed by fusion, and on the remaining one side of the outer peripheral edge. And an opening 51.

  In addition, the processus | protrusion suspended from this surface may be provided in several places about several mm in height on the outermost surface of the enclosing bag 50. However, when a plurality of encapsulating bags 50 are used in an overlapping manner as in the present embodiment, such a protrusion is provided on the outermost enclosing bag 50 as in the second enclosing bag 50B. Good. This is to suppress contact between the heat transfer surfaces 5 of the second enclosing bags 50B of the adjacent heat storage material-enclosed packs 1 in the heat storage material-enclosed pack 1 described later.

  In FIG. 5, the heat storage material enclosure 2 shown in FIG. 5A is accommodated in the first enclosure bag 50 </ b> A (encapsulation bag 50) through the opening 51 (FIG. 5B). Thereafter, as shown in FIG. 5 (c), a known vacuum deaeration sealer is used to deaerate the inside of the first enclosing bag 50A, and at the same time, the opening 51 of the first enclosing bag 50A is melted by about 1 cm in width. The attached sealing portion 52 (in FIG. 5C and FIG. 5E, suction and fusion are illustrated as separate processes for the sake of drawing, but in actuality, sealing is performed. The evacuation in the bag 50 and the thermal fusion of the entire sealing portion 52 are proceeding at the same time) to completely seal the first sealed bag 50A ((d) in FIG. 5). At this time, suction is performed to seal the opening 51 of the first encapsulating bag 50A until the inner bag 40 for preventing leakage of the heat storage material enclosure 2 comes into close contact with the contracted first enclosing bag 50A. Thereby, the heat storage material enclosure prepack 1A which encloses the heat storage material enclosure 2 in the 1st enclosure bag 50A is produced. That is, in the heat storage material-enclosed prepack 1A, the first encapsulating bag 50A includes a fusion part 54 on three sides and a sealing part 52 on the other side of the outer peripheral edge among the four outer peripheral edges forming the outer contour. The entire outer peripheral edge of the first enclosing bag 50A is fused by about 1 cm in width.

  Next, the produced heat storage material-enclosed prepack 1A is accommodated in the second encapsulating bag 50B (encapsulating bag 50) different from the first enclosing bag 50A through the opening 51. Thereafter, as shown in FIG. 5 (e), the inside of the second enclosing bag 50B is again deaerated by the vacuum deaeration sealer, and at the same time, the opening 51 of the second enclosing bag 50B (in FIG. 5, The second enclosing bag 50B is completely sealed with the sealing portion 52 in which (b) is fused about 1 cm in width ((f) in FIG. 5). At this time, suction is performed to seal the opening 51 of the second encapsulating bag 50B until the heat storage material encapsulating prepack 1A comes into close contact with the contracted second enclosing bag 50B. Thus, as an aspect to be accommodated in the latent heat storage tank 80, the leakage preventing inner bag 40 including the heat storage material sealing material 2 is replaced with a double bag structure sealing bag 50 (first sealing bag 50A, second sealing bag 50B). The heat storage material enclosing pack 1 covered with is produced.

  That is, the latent heat storage material composition 3 is accommodated by two (first enclosing bag 50A and second enclosing bag 50B) under a double overlapped state like a nesting. Further, in the heat storage material encapsulating pack 1, the second enclosing bag 50B includes a fusion part 54 on three sides and a sealing part 52 on the other side of the outer peripheral edge among the four outer peripheral edges forming the outer contour. The entire outer peripheral edge of the second enclosing bag 50B is fused by about 1 cm in width.

  In the embodiment, the leakage preventing inner bag 40 enclosing the heat storage material enclosure 2 is encased in the double bag structure encapsulating bag 50. However, the enclosing bag 50 enclosing the leakage preventing inner bag 40 is a double bag. In addition to the structure, in addition to a single bag structure with only one encapsulating bag 50, the encapsulating bag 50 may be superimposed on a triple bag structure or more. That is, the heat storage material container that further encloses the leakage preventing inner bag 40 including the latent heat storage material 10 and the latent heat storage material composition 3 is a single layer by a single heat storage material container, or a plurality of heat storage materials. It is only necessary that the container is in a multi-layered state such as nesting.

  Next, the heat storage material accommodation unit 70 is demonstrated using FIG.3, FIG6 and FIG.7. FIG. 3 is an explanatory view schematically showing a latent heat storage material unit corresponding to the arrangement method of the latent heat storage material in the heat storage tank according to Example 1 of the present embodiment. FIG. 6 is a schematic diagram illustrating a cross-section of the heat storage material enclosure pack when the latent heat storage material is disposed in the heat storage tank according to the first embodiment. FIG. 7 is an explanatory diagram schematically illustrating a state of the heat storage material enclosure pack accommodated in the latent heat storage material unit according to the first embodiment.

  The heat storage material accommodation unit 70 includes a basket 71 (guide means) and 80 heat storage material enclosure packs 1. The basket 71 is a stainless steel net cage in the first embodiment, and has an outer shape of a rectangular parallelepiped (length 22 cm × width 16 cm × height 100 cm), and four side portions 73 erected along four sides of the bottom 74. And an inner space 72 surrounded by a bottom 74 and four side portions 73. The bottom portion 74 and each side portion 73 are formed in a net shape having a relatively large opening of several to several tens of millimeters, for example, in addition to a stainless steel wire net as in the first embodiment, a resin net or the like. The heat medium 83 such as water is made of a material having corrosion resistance. In the basket 71, the bottom 74 and the side parts 73 are reinforced by ribs (not shown).

  The heat storage material-enclosed pack 1 in a state in which the latent heat storage material composition 3 is accommodated in the internal space 72 is restrained by each side portion 73 of the basket 71 that limits the change in the thickness t along the horizontal direction H within an allowable range. And in the heat medium 83 with the arrangement posture maintained. As an allowable range of the changing thickness t (see FIG. 7), the swelled thickness t1 is, for example, the initial thickness t0 based on the thickness t0 of the heat storage material encapsulating pack 1 in the initial state when placed in the basket 71. It is desirable that it is in a range up to three times as large as.

  That is, in the internal space 72 of the basket 71, 80 heat storage material enclosure packs 1 can be accommodated in three upper and lower stages. In this embodiment, the lower two stages are 27 pieces each and the upper stage 26 pieces are shown in FIG. As shown in FIG. 4, the two are stacked and accommodated in the internal space 72 in a state of crossing up and down. In each stage, the heat storage material encapsulating packs 1 positioned at both ends are pressed and held by the side portions 73 on the three surfaces of the basket 71 in a state where the fusion portion 54 of the second enclosing bag 50B is slightly deformed. The heat storage material enclosing pack 1 sandwiched between both ends is held by pressing the fusion portion 54 of the second enclosing bag 50B against the side portion 73 on the opposite surface side of the basket 71 in a slightly deformed state. Has been. In any heat storage material encapsulated pack 1, the heat transfer surfaces 5 of adjacent heat storage material encapsulated packs 1 are separated from each other with a gap K therebetween, and the heat transfer surface 5 of the heat storage material encapsulated pack 1 can contact the heat medium 83. It is in a state.

  Therefore, when the heat medium 83 flows in the latent heat storage tank 80, for example, downward in the vertical direction V, the heat medium 83 flows along the heat transfer surface 5 of each heat storage material enclosure pack 1, and the heat medium 83 And the latent heat storage material composition 3 (latent heat storage material 10) in the heat storage material enclosure pack 1 can conduct heat. In order to separate the heat transfer surfaces 5 of adjacent heat storage material-enclosed packs 1 with a gap K therebetween, spacers may be provided between the heat transfer surfaces 5 of the heat storage material-enclosed packs 1. .

  In the heat storage material enclosure pack 1 in the state of being accommodated in the basket 71, when the latent heat storage material composition 3 is in a liquid phase, the latent heat storage material composition 3 is contained in the enclosed bag 50 by its own weight as shown in FIG. The gap portion 4 having a thickness d1 (0 ≦ d1) is generated in the upper portion.

Here, in the latent heat storage tank 80, the cross-sectional area of the latent heat storage material composition 3 in the heat storage material enclosure pack 1 when projected from the upper position of the heat medium 83 downward in the vertical direction V is the vertical side cross-sectional area. When it is set to Sv and projected in the horizontal direction H through the heat medium 83, the cross-sectional area of the latent heat storage material composition 3 in the heat storage material enclosure pack 1 is defined as the horizontal side cross-sectional area Sh. The arrangement method of the latent heat storage material in the heat storage tank according to Example 1 is the latent heat storage material composition 3 in the state of being accommodated in the heat storage material enclosure pack 1.
Sv <Sh (1)
The condition of formula (1) is satisfied. That is, the gap portion 4 is inevitably generated, but the contact area between the gap portion 4 and the side surface of the heat storage material enclosure pack 1 (left and right side surfaces in FIG. 6) is the entire side surface of the heat storage material enclosure pack 1. It is only part of the area.

  Next, the thickener 22 will be described. As described above, the mannitol 20 (additive 20) used as the thickener 22 also serves as the melting point adjusting agent 21. The additive 20 is made of a substance having a physical property that generates a negative heat of dissolution when dissolved with the latent heat storage material 10, and is a substance belonging to sugar alcohol.

  Here, the definition of “substance having a physical property that generates negative heat of dissolution” will be described. As described above, the latent heat storage material composition 3 is composed of the latent heat storage material 10 made of ammonium alum (ammonium aluminum sulfate 12 hydrate) as a main component, and the additive 20 that also serves as the thickener 22 and the melting point modifier 21. (Mannitol 20) is blended. When the additive 20 is dissolved in the latent heat storage material 10, the additive 20 that absorbs heat from the outside and generates an endothermic reaction is referred to as “negative dissolution” in the latent heat storage material composition 3 according to the present embodiment. It is defined as “a substance having physical properties that generate heat”.

Examples of the “substance having a property of generating a negative heat of solution” include erythritol and xylitol, mannitol (C ₆ H ₁₄ O ₆ ), sorbitol (C ₆ H ₁₄ O ₆ ), lactitol (C ₁₂ H _24). There are “substances belonging to sugar alcohols” such as O ₁₁ ). In addition, calcium chloride hexahydrate (CaCl ₂ · 6H ₂ O), magnesium chloride hexahydrate (MgCl ₂ · 6H ₂ O), potassium chloride (KCl), sodium chloride (NaCl), etc. There is a substance. Also applicable to cases where at least one of the substances corresponding to the above-mentioned “substances belonging to sugar alcohols” is included, and cases where at least one of the substances corresponding to the “substances belonging to chloride” is included. To do. Further, there is a mixture of any of the substances corresponding to the above-mentioned “substances belonging to sugar alcohols” and any of the substances corresponding to the above-mentioned “substances belonging to chloride”.

In Example 1 of this embodiment, the blending ratio of mannitol (C ₆ H ₁₄ O ₆ ) is in the range of 10 wt% or less as the blending ratio of the total weight of the latent heat storage material composition 3. When mannitol is added to ammonium alum (latent heat storage material 10), for example, at a blending ratio of 8 wt% with respect to the total weight of the latent heat storage material composition 3, the melting point of the latent heat storage material composition 3 is about 90%. It becomes ℃.

The melting point adjusting agent 21 may be, for example, anhydrous sodium sulfate (Na ₂ SO ₄ ) or the like other than the substance corresponding to “a substance having a physical property that generates negative heat of dissolution”. Anhydrous sodium sulfate has a melting point of 884 ° C. and is a solid substance at room temperature. The blending ratio of anhydrous sodium sulfate in the total weight of the latent heat storage material composition 3 is in the range of 10 wt% or less, and the anhydrous sodium sulfate is, for example, 2 to 5 wt% in the mixing ratio of the latent heat storage material 10 (ammonium When added to alum, the melting point of the latent heat storage material composition 3 is about 90 ° C.

  Moreover, the thickener 22 which concerns on the modification of Example 1 of this embodiment is demonstrated. The thickener 22 is a water-soluble substance belonging to the polysaccharide, and melts the latent heat storage material composition 3 in a liquid phase based on the interaction between water and cations contained in the latent heat storage material composition 3. It is a substance that increases the viscosity of the liquid, and is a water-soluble gellan gum equivalent substance that belongs to a heteropolysaccharide. The gellan gum equivalent substance will be described later.

  This will be specifically described. In this embodiment, the thickener 22 is LA gellan gum (Low acyl gellan gum), which is a kind of gellan gum (also known as gellan, polysaccharide S-60). Gellan gum is a polymer compound made of a polymer in which monosaccharides are linked in a straight chain, as shown in the chemical structure below. The blending ratio of LA gellan gum in the total weight of the latent heat storage material composition 3 is in the range of 1 wt% or less.

  LA gellan gum is a polymer compound made of a polymer in which monosaccharides are linked in a straight chain, and belongs to a polysaccharide. A monomer (monomer) serving as a polymer substrate is composed of 4 sugar molecules in total of 3 types, consisting of 2 D-glucose residues, 1 D-glucuronic acid residue, and 1 L-rhamnose residue. Consists of. LA gellan gum is in a crystalline powder form at room temperature, and LA gellan gum is dissolved and dispersed in water at a temperature of about 85 ° C. or higher. When LA gellan gum dispersed in water is cooled to below about 85 ° C., it changes from a random coiled structure to a double helical structure. Further, when gellan gum having such a double helix structure is supplied with a cation from the outside, LA gellan gum forms a network structure in which the double helix structure is associated in acidic and neutral liquids. Forms a highly transparent gel.

That is, when a cation is supplied to LA gellan gum from the outside, a carboxy group (a COO ^{− in the} chemical structure) is a negatively charged functional group in the D-glucuronic acid residue of LA gellan gum. )) And a positively charged cation (positive ion) (also denoted as “M ⁺ ”) attract each other. At this time, when the cation is monovalent, the positive charge of the cation and the negative charge on the carboxy group of LA gellan gum cancel each other, and the electrostatic repulsion between LA gellan gums forming a double helical structure, It will be resolved. Furthermore, these double helix structures are associated by hydrogen bonds that interact between oxygen atoms and hydrogen atoms contained in the double helix structure. Further, when the cation is divalent, the negatively charged carboxy group (“COO ⁻ ”) included in each double helix structure is separated from the positively charged cation (“M ²⁺ ”). By being bridged through electrical interactions, these double helix structures associate with each other. By such association, the LA gellan gum supplied with the cation gels.

  The gellan gum equivalent substance is a substance corresponding to such LA gellan gum, regardless of whether it is a single species or a plurality of species. By having a hydrophilic group such as a group, it has a functional group that imparts water solubility to the polymer compound and is negatively charged by ionizing in water, and is supplied from the outside in the presence of water. Corresponding substances are those that allow the formation of electrostatic interactions between the cation to be formed and this functional group. In addition, as a physical property equivalent to that of LA gellan gum, it has water solubility, and has the property of forming at least a three-dimensional structure such as a helical structure by the interaction between functional groups in the molecule. In addition, the electrostatic interaction between a cation and a functional group supplied from the outside causes these helical structures to associate to form a network structure to promote gelation. In the latent heat storage material composition 3 according to the present embodiment, in addition to LA gellan gum, a substance having such characteristics is defined as “gellan gum equivalent substance”.

  In addition to LA gellan gum, the thickener 22 may be HA gellan gum as an example of a gellan gum equivalent substance. HA gellan gum (High acyl gellan gum) is a type of gellan gum, and one of the two D-glucose residues of LA gellan gum has one hydroxy group ("OH") hydrogen in one D-glucose residue. In this structure, the atom (“H”) is replaced with another substituent. In the case of HA gellan gum, when HA gellan gum is heated above about 90 ° C., HA gellan gum A dissolves and disperses in water. When HA gellan gum dispersed in water is gelled by being cooled to less than about 90 ° C., the presence of cations is not essential for promoting gelation. However, when cations are present at a high concentration within a certain range, the strength of the gel structure increases.

<Comparative Example 1>
The arrangement method of the latent heat storage material in the heat storage tank according to Comparative Example 1 will be described with reference to only the differences from the arrangement method of the latent heat storage material in the heat storage tank according to Example 1. In addition, in the description, the part which overlaps with the content of the method for enclosing the heat storage material in the container according to Example 2 of the present embodiment is omitted or simplified.

<Production Method of Latent Heat Storage Material Composition 3>
An outline of the method for enclosing the heat storage material in the container according to Comparative Example 1 will be briefly described with reference to FIG. FIG. 9 is a flowchart showing a process for producing a latent heat storage material composition provided in the heat storage material accommodation unit according to Comparative Example 1. In producing the latent heat storage material composition 3, 90 g of the ammonium alum hydrate 10 powder as the latent heat storage material 10, 2 g of anhydrous sodium sulfate (Na ₂ SO ₄ ) powder as the melting point modifier 21, and thickening 8 g of mannitol powder, which is agent 22, is weighed and collected. The ammonium alum hydrate 10 is in the form of a powder obtained by pulverizing particles to an average size of about 1 mm. Each of the melting point adjusting agent 21 and the thickener 22 is in the form of a powder obtained by pulverizing particles to an average size of several hundred μm ((a) in FIG. 9).

  The ammonium alum hydrate 10, the melting point adjusting agent 21, and the thickener 22 are uniformly stirred, and these mixtures are put into a plurality of leakage prevention inner bags 40 through the openings 41, respectively. And subdivided ((b) in FIG. 9). In the present embodiment, the leakage preventing inner bag 40 is, for example, a packaging bag made of thin polyethylene (PE) having a rectangular shape of 25 cm long × 15 cm wide and having a thickness of about 0.02 mm. Thereby, the latent heat storage material composition 3 is produced | generated in each inner bag 40 for leak prevention. The opening 41 of the leakage preventing inner bag 40 is closed by folding the folded portion 42 on the opening 41 side ((c) in FIG. 9), and the leakage preventing inner bag 40 in this state is placed in the enclosing bag 50. And sealing the opening of the encapsulating bag 50 to seal the enclosing bag 50. The inner bag 40 for preventing leakage after the folded portion 42 is folded is a rectangle of 9.5 cm long × 15 cm wide. Thus, the latent heat storage material composition 3 is generated in the leakage preventing inner bag 40, and the heat storage material enclosure 2 in which the latent heat storage material composition 3 is accommodated in the leakage prevention inner bag 40 is produced.

  As shown in FIG. 5, the manufacturing process of the heat storage material enclosure pack 1 is the same as that of Example 1, and the produced heat storage material enclosure 2 is replaced with an enclosure bag 50 (first enclosure bag 50 </ b> A) having a double bag structure. By covering with the second enclosing bag 50B), the heat storage material enclosing pack 1 is produced.

  Next, the heat storage material accommodation unit 70 </ b> A will be described with reference to FIGS. 1, 8, 10, and 11. FIG. 8 is an explanatory view schematically showing a latent heat storage material unit corresponding to the arrangement method of the latent heat storage material in the heat storage tank according to Comparative Example 1. FIG. 10 is a schematic diagram illustrating a cross-section of the heat storage material enclosure pack when the latent heat storage material is disposed in the heat storage tank according to Comparative Example 1. FIG. 11 is an explanatory diagram schematically illustrating a state of the heat storage material encapsulated pack accommodated in the latent heat storage material unit according to Comparative Example 1.

  The heat storage material accommodation unit 70 </ b> A includes a basket 71 </ b> A and 80 heat storage material enclosure packs 1. In this comparative example 1, the basket 71A is a stainless steel net cage, and has an outer shape of a rectangular parallelepiped (vertical 19 cm × width 13 cm × height 100 cm), and four side portions 73A standing along four sides of the bottom 74A. And has an inner space 72A surrounded by a bottom portion 74A and four side portions 73A. The bottom part 74A and each side part 73A are formed in a net shape having a relatively large opening of, for example, several to several tens of millimeters, and are made of a material having corrosion resistance to a heat medium 83 such as water such as a stainless steel wire net. Consists of.

  In the internal space 72A of the basket 71A, 80 heat storage material-enclosed packs 1 are stacked in 80 stages and accommodated in the internal space 72A with the heat transfer surface 5 lying in the horizontal direction H. In each of the 80 heat storage material enclosure packs 1, the fusion part 54 and the sealing part 52 of the second enclosure bag 50 </ b> B are held on all four side parts 73 of the basket 71 in a slightly deformed state. . When the heat storage material encapsulated packs 1 containing the latent heat storage material composition 3 are arranged in a plurality of stages in a horizontal orientation, the heat transfer surface of the heat storage material encapsulated pack 1 containing the stacked latent heat storage material compositions 3 is stacked. 5 are in close contact with each other, and water or the like (heat medium) 83 does not sufficiently flow to the heat transfer surface, which causes a decrease in heat conduction efficiency.

  In the heat storage material encapsulated pack 1 in the state of being accommodated in the basket 71A, when the latent heat storage material composition 3 is in a liquid phase, the latent heat storage material composition 3 is contained in the enclosed bag 50 by its own weight as shown in FIG. The gap portion 4 having a thickness d2 (0 ≦ d2) is generated in the upper portion.

In the latent heat storage tank 80, the state of the latent heat storage material composition 3 is vertical cross-sectional area Sv> horizontal side cross-sectional area Sh, and the arrangement method of the latent heat storage material in the heat storage tank according to Comparative Example 1 is the heat storage material enclosure pack 1. In the latent heat storage material composition 3 in a state accommodated in the interior,
Sv <Sh (1)
The condition of formula (1) is not satisfied. That is, the air mixed in the heat storage material enclosure pack 1 forms a wide gap 4 that is in contact with the entire upper surface of the enclosure bag 50. When the wide gap portion 4 is generated, heat is stored from the heat medium 83 to the latent heat storage material composition 3 (latent heat storage material 10) or is radiated from the latent heat storage material 10 to the heat medium 83 via the encapsulating bag 50. In addition, the ratio of blocking heat conduction in the gap 4 increases, leading to a decrease in heat conduction.

  Next, the latent heat storage material composition 3 (latent heat storage material 10 is compared with the latent heat storage material arrangement method of the latent heat storage material according to Example 1 and the latent heat storage material arrangement method of the latent heat storage material according to Comparative Example 1 in comparison. The verification experiment 1 which confirms the difference in each behavior regarding the heat storage amount and the heat radiation amount in) was conducted. The verification experiment 1 will be described.

<Common conditions for Example 1 and Comparative Example 1>
In the verification experiment 1, the state of the latent heat storage material composition 3 (sample of Example 1) by the method for arranging the latent heat storage material in the heat storage tank according to Example 1 described above and the latent heat storage material according to Comparative Example 1 described above. A heat storage test and a heat release test were performed using the state of the latent heat storage material composition 3 (the sample of Comparative Example 1) according to the heat storage tank arrangement method.
In the verification experiment 1, the latent heat storage tank 80 has a tank capacity of 160L.
The latent heat storage material composition 3 enclosed in the sealing bag 50 in the heat storage material enclosure pack 1 is 100 g.
In the latent heat storage tank 80, the heat storage material accommodation unit 70 in Example 1 and the heat storage material accommodation unit 70A in Comparative Example 1 are immersed in water that is the heat medium 83. Was 100 cm.
In addition, in both Example 1 and Comparative Example 1, 1.5 L of liquid paraffin was added to the water in the latent heat storage tank 80 (corresponding to 1 cm in depth of the latent heat storage tank 80), so that a layer of liquid paraffin was on the water surface. The evaporation of moisture from the inside of the latent heat storage tank 80 was prevented. Actually, in another experiment, even when a liquid paraffin layer was formed on hot water maintained at 90 ° C. for 2 days, it was confirmed that there was no fluctuation in the water level of the warm water due to the liquid paraffin layer, and there was no evaporation of moisture. .

<Heat storage test>
In the heat storage test, a heat exchanger that exchanges heat between the electric heater (equivalent to the first heat exchanger described above) and cold water outside the latent heat storage tank 80 (equivalent to the second heat exchanger described above). The hot water that is the heat medium 83 is circulated by a pump in a pipe line that is connected in series, and the hot water is heated up to a set temperature of 80 ° C. by an electric heater without flowing cold water through the heat exchanger. Held.
Thereafter, the set temperature of the electric heater was changed to 90 ° C., the water temperature was raised from 80 ° C. to 90 ° C., and the latent heat storage material composition 3 in the heat storage material enclosure pack 1 was stored. At this time, the flow rate of the hot water circulated by the pump is 7.5 L / min. And constant.

<Heat dissipation test>
In the heat dissipation test, the hot water in the latent heat storage tank 80 is circulated by the pump in the above-described pipe line in which the heat exchanger for exchanging heat between the electric heater and the cold water is connected in series, and the set temperature of the electric heater is set to 80 The temperature of the hot water in the latent heat storage tank 80 is lowered from 90 ° C. to 80 ° C. by passing cold water through the heat exchanger, and heat is radiated by the latent heat storage material composition 3 in the heat storage material enclosure pack 1. went. At this time, the flow rate of the hot water circulated by the pump is 7.5 L / min. And constant.

<Experiment evaluation method>
In the heat storage test, in Example 1 and Comparative Example 1, after determining the time required for the heat storage amount of the latent heat storage material composition 3 (latent heat storage material 10) to reach 300 kJ / L, the heat storage rate was determined. Calculated.
-Then, by comparing Example 1 and Comparative Example 1, whether or not there is a difference in the heat storage speed was examined, and the presence or absence of significance of Example 1 was confirmed by the difference in the heat storage speed.
In the heat dissipation test, after obtaining the time required for the heat dissipation amount of the latent heat storage material composition 3 (latent heat storage material 10) to reach 300 kJ / L in Example 1 and Comparative Example 1, Calculated.
-Then, by comparing Example 1 and Comparative Example 1, it was examined whether there was a difference in the heat release rate, and the presence or absence of significance of Example 1 was confirmed by the difference in the heat release rate.

<Calculation method of heat storage rate / heat release rate>
In calculating the heat storage rate and the heat release rate, the following equation (2) was used. In the formula (2), the latent heat storage material composition 3 (latent heat storage material 10) is abbreviated as “PCM”.

…式（２）

... Formula (2)

However, in equation (2):
H _PCM [kJ / L]: PCM heat storage density or PCM heat release density ρ _PCM [kg / L]: PCM density M _PCM [kg]: Filling amount of PCM into the latent heat storage tank (160L) t [s ]: Time from the start of measurement Cp _w [kJ / kg · K]: Specific pressure specific heat of water ρ _W [kg / L]: Water density Q _w [L / s]: Flow rate of circulating hot water T _in [° C.]: Circulating hot water inflow temperature T _out [° C.]: Outflow temperature of circulating hot water from the latent heat storage tank K [kJ / K]: Overall heat transfer coefficient T _av between the hot water in the tank and the outer surface of the latent heat storage tank [° C.] Average water temperature in the latent heat storage tank T _air [° C.] Outside air temperature V [L]: Total volume of filling in the latent heat storage tank α [−]: Volume increase rate M _s [ kg]: the weight of the stainless steel basket ρ _s [kg / L]: stainless steel Degrees _{Cp s [kJ / kg · K} ]: specific heat at constant pressure T _t [° C.] Stainless steel: average temperature T ₀ [° C.] of the latent heat storage tank at time t: the initial value of the average temperature of the latent heat storage tank

In equation (2):
-In the first term, the amount of heat input to the latent heat storage tank 80 at the time of temperature rise or the temperature drop from the flow rate, the temperature difference between the inlet side and the outlet side of the latent heat storage tank 80, the density, and the specific heat with respect to the circulating hot water For the amount of heat removed from the latent heat storage tank 80 at the time, the total amount of heat was calculated.
In the second term, the total amount of heat radiation loss from the side wall surface of the latent heat storage tank 80 was obtained from the difference between the average water temperature of the latent heat storage tank 80 and the outside air temperature. However, in the latent heat storage tank 80, the evaporation of the warm water in the latent heat storage tank 80 can be suppressed by the liquid paraffin floating on the surface of the warm water, so the influence of the warm water evaporation was ignored.
In item 3, the amount of sensible heat stored in the latent heat storage tank 80 and the stainless steel baskets 71 and 71A, or the amount of sensible heat released was calculated.
-Then, the heat storage density of PCM or the heat dissipation density of PCM was derived by subtracting the calculation result of the second term and the calculation result of the third term from the calculation result of the first term.

<Experimental result>
FIG. 12 shows the verification of the relationship between the amount of heat stored per 1 L of the latent heat storage material composition and time for the latent heat storage material composition housed in the method for arranging the latent heat storage material in the heat storage tank according to Example 1. In Experiment 1, it is the graph which showed the measurement result of the heat storage amount of a sample. FIG. 13 is a graph showing the measurement result of the heat radiation amount by the same sample, following FIG. FIG. 14 is a verification experiment 1 in which the relationship between the heat storage amount per 1 L of the latent heat storage material composition and time is examined, and the latent heat storage material composition accommodated by the method for arranging the latent heat storage material in the heat storage tank according to Comparative Example 1 On the other hand, it is the graph which showed the measurement result of the thermal storage amount. FIG. 15 is a graph showing the measurement result of the heat radiation amount by the same sample following FIG. FIG. 16 is a table that summarizes the results of the heat storage rate and the heat release rate by comparing the sample according to Example 1 and the sample according to Comparative Example 1 with respect to Verification Experiment 1 and Verification Experiment 2. 12 to 16, the latent heat storage material composition 3 (latent heat storage material 10) is abbreviated as “PCM”.

  As shown in FIGS. 12 to 16, the heat storage speed is the same at 15.0 [W / L] in both Example 1 and Comparative Example 1, and there is no difference in the heat storage speed between Example 1 and Comparative Example 1. It was. The heat release rate of Example 1 was 21.4 [W / L], which was about 2.5 times faster than the heat release rate of Comparative Example 1 8.6 [W / L].

<Discussion>
In Comparative Example 1, as shown in FIG. 10, the latent heat storage material composition 3 is accommodated in the latent heat storage tank 80 in a vertical orientation in which the vertical sectional area Sv is larger than the horizontal sectional area Sh. When the heat storage is completed, a part of the melt of the latent heat storage material composition 3 is biased to the lower side of the enclosing bag 50, and the upper portion of the latent heat storage material composition 3 is widened by the air mixed in the enclosing bag 50. A void portion 4 is formed. The wide gap 4 is in contact with the entire area of one surface of the heat transfer surface 5 of the heat storage material encapsulating pack 1 (encapsulating bag 50), and heat transfer is significantly deteriorated during heat dissipation to the hot water (heat medium 83). Compared with Example 1, it is considered that the heat dissipation rate was lowered.

  On the other hand, in Example 1, as shown in FIG. 6, the latent heat storage material composition 3 is accommodated in the latent heat storage tank 80 in a vertical orientation in which the vertical cross-sectional area Sv is smaller than the horizontal cross-sectional area Sh. Therefore, the contact area between the gap 4 and the side surface (heat transfer surface 5) of the heat storage material enclosure pack 1 (encapsulation bag 50) is only a part of the entire area of the side surface of the heat storage material enclosure pack 1. Further, the melt of the latent heat storage material composition 3 moves to the lower side of the enclosing bag 50 when the heat storage is completed, and the thickness of the enclosing bag 50 (the heat storage material enclosing pack 1) is not uniform. It is considered that warm water can be circulated between the packs 1 and the heat dissipation rate is improved.

  In this verification experiment 1, the latent heat storage material composition 3 was calculated by comparing the heat storage rate per liter and the heat release rate, but the latent heat storage material composition 3 housed in the latent heat storage tank 80 was sealed in a sealed bag 50. It is in the state of the heat storage material enclosure pack 1 enclosed in. In order to compare the effect of the latent heat storage material in the heat storage tank according to Example 1 and the effect of the latent heat storage material in the heat storage tank according to Comparative Example 1 from a more accurate viewpoint, the following is performed. Verification experiment 2 was performed.

<Conditions for Verification Experiment 2>
In the verification experiment 2, for the heat storage material encapsulated pack 1 in which 100 g of the latent heat storage material composition 3 is enclosed in the encapsulating bag 50, the air mixing rate is calculated and compared with the heat accumulation speed and the heat dissipation speed in the portion per 1L. To do. And the case of Example 1 and the case of the comparative example 1 were contrasted about the heat storage speed (or heat radiation speed) and the air mixing rate. The calculation of the heat storage rate (or heat release rate) per liter and the air mixing rate for the heat storage material-enclosed pack 1 were performed based on the arithmetic expression described below.
Heat storage speed (or heat release speed) per liter for the heat storage material enclosure pack 1 = heat storage speed (or heat release speed) per liter for the latent heat storage material composition 3/100 g of the latent heat storage material composition 3 enclosed Volume of encapsulated pack 1 / volume of latent heat storage material composition 3 of 100 g / air mixing ratio [%] = 100 × (volume of encapsulated bag 50−latent heat storage material composition 3) / volume of encapsulated bag 50

  In determining the volume of the encapsulating bag 50, the heat storage material encapsulating pack 1 in which the latent heat storage material composition 3 was encapsulated in the encapsulating bag 50 was immersed in the water tank, and the entire volume was calculated based on the amount of increase in the water level. Then, the volume occupied by a material such as resin constituting the encapsulating bag 50 was subtracted from the calculation result to obtain the volume of the enclosing bag 50.

<Result of verification experiment 2>
As shown in FIG. 16, in the heat storage speed, the heat storage speed of Example 1 is 9.1 [W / L], which is about 1.2 times the heat release speed of Comparative Example 1 7.9 [W / L]. It was too early. The heat release rate of Example 1 was 13.0 [W / L], which was about 2.9 times faster than the heat release rate of Comparative Example 1 of 4.5 [W / L]. Further, when 100 g of the latent heat storage material composition 3 was sealed in the sealing bag 50, the air mixing rate in Comparative Example 1 was 40.3%. In Example 1, the air mixing rate was 25.9%. When 200 g of the latent heat storage material composition 3 was sealed in the sealing bag 50, the air mixing rate according to Example 1 was 1.8%.

<Consideration of Verification Experiment 2>
In Example 1, when the latent heat storage material 10 is manufactured, the aqueous mannitol solution 30 enters between the calcined ammonium alum (AlNH ₄ (SO ₄ ) ₂ ) particles, so that the air between the particles can be discharged to the outside. Therefore, it is considered that the air mixing rate in Example 1 is lower than that in Comparative Example 1.

  Furthermore, apart from the results of the verification experiment 2 described above, the present applicant also investigated the supercooling phenomenon in the latent heat storage material composition 3. According to the investigation, in the verification experiment 2, the supercooling phenomenon did not occur in Example 1 in which the air mixing rate was 25.9%. The applicant has so far compared to the air mixing rate calculated by the same method as in the verification experiment 2 with less than about 25% (the filling rate of the latent heat storage material composition 3 in the encapsulating bag is about 75%). However, this verification experiment 2 proved that knowledge.

<Confirmation survey of thickness of heat storage material encapsulated pack>
Next, the heat storage material enclosing pack 1 (22 cm long × 16 cm wide and 22 cm long vertically arranged) in the heat storage material accommodation unit 70 used in the latent heat storage tank 80 is taken out from the latent heat storage tank 80, 80 From the individual heat storage material-enclosed packs 1, 10 heat storage material-enclosed packs 1 were arbitrarily extracted, and a confirmation survey was performed to actually measure the thicknesses. FIG. 17 schematically shows a part for measuring the thickness of the heat storage material encapsulated pack in the confirmation survey for the heat storage material encapsulated pack arranged by the method for arranging the latent heat storage material in the heat storage tank according to the first embodiment. FIG.

<Measurement method>
For the extracted 10 heat storage material encapsulated packs 1 (samples), as shown in FIG. 17, the position P at a position 3 cm from the upper end, the position R at a position 3 cm from the lower end, and the positions P and R The thickness t of the heat storage material-enclosed pack 1 was measured with a caliper at the position Q in the center position.

<Measurement results>
FIG. 18 is a table summarizing the measurement results of the thickness of the heat storage material enclosure pack in the confirmation survey. As shown in FIG. 18, the thickness of the center part of the heat storage material enclosure pack 1 and the thickness of the lower part were thicker than the thickness of the upper part in each sample.

<Discussion>
From the measurement results, there is a difference in the degree of the changed thickness for each sample, but in any sample, when the latent heat storage material composition 3 is heated to be in a liquid phase state, the latent heat storage material composition 3 is melted. It is presumed that the thickness has increased at the central portion or the lower portion of the heat storage material encapsulating pack 1 because a part of the liquid has moved below the enclosing bag 50. As described above, since the thickness of each heat storage material-enclosed pack 1 is not uniform, a gap K is easily formed on the heat transfer surface 5 of the adjacent heat storage material-enclosed pack 1 as shown in FIG. The heat medium 83 can easily flow through the gap K. Therefore, the heat transfer performance that conducts heat by the heat medium 83 flowing through the gap K coming into contact with the heat transfer surface 5 of the adjacent heat storage material-enclosed pack 1 is one of the factors for further improvement. It is considered a thing.

  Next, the arrangement | positioning method in the thermal storage tank of the latent heat storage material of this embodiment, and the effect | action and effect of the latent heat storage tank 80 are demonstrated. The method for arranging the latent heat storage material in the heat storage tank according to the present embodiment is to seal the latent heat storage material 10 that performs heat storage or heat dissipation by using the input and output of latent heat accompanying the phase change inside the encapsulating bag 50, and to store the latent heat storage material. 10, the latent heat storage material 10 is in a state where the latent heat storage material 10 is housed in the encapsulating bag 50 when transferring heat to and from the heat medium 83 in the latent heat storage tank 80 via the enclosing bag 50. In the arrangement method of the latent heat storage material in the heat storage tank, which is an arrangement mode of the material 10, the thickener 22 for increasing the viscosity of the melt of the latent heat storage material 10 in a liquid phase is blended, and the encapsulating bag 50 has latent heat. The latent heat storage material composition 3 including the heat storage material 10 and the thickener 22 is accommodated. The cross-sectional area of the latent heat storage material composition 3 when the latent heat storage material composition 3 in the encapsulating bag 50 is projected downward from the upper position of the heat medium 83 in the vertical direction V is defined as a vertical cross-sectional area Sv. Assuming that the cross-sectional area of the latent heat storage material composition 3 when projected in the horizontal direction H through the medium 83 is a horizontal cross-sectional area Sh, the latent heat storage material composition 3 in a state of being accommodated in the enclosing bag 50 is Sv <Sh ... Formula (1) The filling bag 50 (heat storage material-enclosed pack 1) in the state in which the latent heat storage material composition 3 is accommodated satisfies the condition of Formula (1) in the horizontal direction H. The basket 71 that limits the change in the thickness t along the permissible range is accommodated in the heat medium 83 in a restrained state and in a state in which the arrangement posture is maintained. Due to this feature, when the latent heat storage material composition 3 is in a melt state, as shown in FIGS. 6 and 7, the melt of the latent heat storage material composition 3 is below the sealed bag 50 when the heat storage is completed. Since the thickness t of the encapsulating bag 50 (heat storage material-enclosed pack 1) is not uniform in the vertical direction, t0 on the upper side and t1 (t0 <t1) on the lower side, the heat medium 83 is adjacent to the heat storage. It becomes easy to distribute | circulate between the material enclosure packs 1. FIG.

  Moreover, as shown in FIG. 18, since the aspect of the expanded heat storage material encapsulated pack 1 is different for each heat storage material encapsulated pack 1, even if it is locally in contact with the expanded portion, the contact area is It can be kept relatively small. Moreover, even if the heat storage material enclosure pack 1 in which the latent heat storage material composition 3 is accommodated in the encapsulating bag 50 is arranged in the latent heat storage tank 80 in the vertical orientation as shown in FIG. 3, the latent heat storage material composition 3 In this melt, the thickener 22 can maintain a state in which the constituent components are uniformly dispersed. Therefore, even if the latent heat storage material composition 3 repeatedly performs a phase change between the liquid phase and the solid phase, the distribution of the constituent components can be kept uniform. As a result, it can suppress that physical properties, such as melting | fusing point and a freezing point, of the latent heat storage material composition 3 fluctuate.

  Of course, if the heat storage material-enclosed pack 1 is arranged in a vertical orientation in the latent heat storage tank 80, the side surface of the heat storage material-enclosed pack 1 becomes the heat transfer surface 5 with the heat medium 83, and the heat storage material-enclosed pack A narrow gap 4 as shown in FIG. However, in comparison with the same heat storage material-enclosed pack 1 (see FIG. 10), the volume of the space 4 does not change, but the contact area between the space 4 and the side surface of the heat-storage material-enclosed pack 1 is the heat storage material-enclosed pack 1. It is only a part of the entire area of the side. Therefore, as shown in FIGS. 8 and 10, the vertical orientation as shown in FIG. 3 and FIG. 6 encloses the heat storage material by its own weight as compared to the horizontal orientation in which a plurality of heat storage material enclosure packs 1 are stacked. The contact between the heat transfer surfaces 5 of the pack 1 can be relaxed, and a decrease in heat conduction can be suppressed.

  Therefore, according to the arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment, the latent heat storage material 10 that stores heat or releases the heat is accommodated in the enclosed bag 50, and the latent heat storage tank is interposed via the enclosed bag 50. In conducting heat between the heat medium 83 in 80 and the latent heat storage material 10, the excellent effect that heat conduction can be performed efficiently while maintaining the heat storage / dissipation performance of the latent heat storage material 10 is achieved. Play.

  Moreover, in the arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment, the enclosing bag 50 is a bag made of a material that can be fused with a multilayer structure in which a resin and a metal are laminated, and the enclosing bag 50. It has the feature that it has the fusion | melting part 54 sealed by fusion | fusion at all the outer periphery which makes the external shape outline of this. Due to this feature, the rigidity of the entire heat storage material encapsulating pack 1 is enhanced by the four-side fused portion 54 (one side of which is the sealing portion 52). Moreover, since the heat transfer surface 5 of the heat storage material encapsulating pack 1 inside the fusion part 54 is surrounded by the four fusion parts 54 of the encapsulating bag 50, the melt of the latent heat storage material composition 3 is Even when the heat storage is completed, the thickness t of the encapsulating bag 50 (the heat storage material enclosing pack 1) does not change extremely between the upper and lower portions of the enclosing bag 50 even if the storage bag 50 moves downward. Thereby, even if it contacts in the expansion | swelling part between adjacent heat storage material enclosure packs 1, the contact area can be restrained comparatively small. Moreover, the amount by which the melt of the latent heat storage material composition 3 moves to the lower side of the enclosing bag 50 can be suppressed within a range in which the heat transfer inhibition by the latent heat storage material composition 3 itself does not appear remarkably. Further, when the heat storage material encapsulating pack 1 is accommodated in the internal space 72 of the basket 71, the fused portion 54 that does not contribute to heat conduction is slightly deformed and is in contact with the side portion 73 of the basket 71 and moored. Thus, when the heat storage material-enclosed pack 1 is accommodated, the heat storage material-enclosed pack 1 can be firmly held on the side portion 73 of the basket 71 by the fused portion 54, and contact with the heat medium 83 can be easily ensured.

  Further, in the method for arranging the latent heat storage material in the heat storage tank according to the present embodiment, the encapsulating bag 50 is a film containing at least one of polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET). It is a bag having a laminate structure in which aluminum is deposited on the resin layer. With this feature, in the heat storage material encapsulated pack 1, if the thickness of the entire encapsulating bag 50 is, for example, about 100 μm, there is almost no decrease in heat conduction in the enclosing bag 50, and the latent heat storage material of the latent heat storage material composition 3 10 and the heat medium 83 can sufficiently store heat to the latent heat storage material 10 and release heat from the latent heat storage material 10. Moreover, even if the temperature of the heat medium 83 is close to 100 ° C., the heat resistance of the heat storage material-enclosed pack 1 can be secured. In addition, since aluminum is deposited on the film-like resin layer, the heat medium 83 (warm water) in the latent heat storage tank 80 and a gas such as oxygen are passed through the film-like resin layer to the latent heat storage material composition 3. Can be blocked by an aluminum coating layer.

  Moreover, in the arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment, the latent heat storage material composition 3 is separated from the leakage prevention inner bag 40 for one heat storage material encapsulated pack 1 in two encapsulated bags. 50. It is characterized in that it is housed in a state of being overlapped double like a nesting. Due to this feature, when the heat storage material enclosure pack 1 is moved inside or outside the latent heat storage tank 80, or due to aging deterioration of the main body of the enclosure bag 50, the encapsulating bag 50 covering the latent heat storage material composition 3 is provided. Even when damaged, since the enclosing bag 50 has a double structure (first enclosing bag 50A and second enclosing bag 50B), leakage of the latent heat storage material composition 3 to the outside can be prevented.

  In the method for arranging the latent heat storage material in the heat storage tank according to the present embodiment, the basket 71 includes a plurality of encapsulated bags 50 (heat storage material-enclosed pack 1) in a state in which the latent heat storage material composition 3 is accommodated (Example 1). 80), the heat transfer surface 5 of the heat storage material encapsulating pack 1 has an internal space 72 that can be accommodated in contact with the heat medium 83, and includes four side portions 73 and a bottom portion 74 that surround the internal space 72. It is characterized by being formed in a stainless steel wire mesh with openings. With this feature, the heat storage material-enclosed pack 1 is obtained by the phase change of the latent heat storage material composition 3 in the heat storage material-enclosed pack 1 after ensuring the contact between the heat transfer surface 5 of the heat storage material-enclosed pack 1 and the heat medium 83. Even if some deformation occurs, the arrangement state of the heat storage material-enclosed pack 1 accommodated in the internal space 72 can be kept substantially constant in the latent heat storage tank 80.

  Moreover, in the arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment, the latent heat storage material 10 is composed of an inorganic salt hydrate (ammonium alum 12 hydrate) 10 and hydrated in the inorganic salt hydrate 10. An inorganic salt hydrate 10 is produced by hydrating the anhydrous 11 (baked ammonium alum 11) from which water has been removed and the added water 12 in the inner bag 40 for preventing leakage, and encapsulating the bag. 50 is enclosed. Due to this feature, the gap between the adjacent powders before the anhydrous 11 is filled into the leakage preventing inner bag 40 is filled with water 12 added to the leakage preventing inner bag 40 during the hydration reaction. Therefore, the volume filling rate that the latent heat storage material 10 substantially occupies with respect to the internal volume of the leakage preventing inner bag 40 is the powdered inorganic salt hydrate 10 (ammonium alum 12 hydrate). Compared with the case of directly filling the inside 40, it is greatly improved. Furthermore, since the generation of gaps is suppressed, the time required for heat conduction between the latent heat storage material 10 and the heat medium 83 in the latent heat storage tank 80 is shortened in comparison with such a case. Performance is high.

  Moreover, in the arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment, the main component of the latent heat storage material 10 is alum hydrate 10. Due to this feature, for example, the latent heat storage material 10 using alum hydrate such as ammonium alum 12 hydrate has a relatively large physical property of latent heat accompanying phase change. Therefore, in the latent heat storage material 10 having such physical properties, the heat storage amount that can store heat is relatively large. In addition, the latent heat storage material composition 3 including the latent heat storage material 10 that is alum hydrate is excellent in that it has a heat storage and heat dissipation performance of storing a large amount of heat and radiating it.

Moreover, in the arrangement method of the latent heat storage material in the heat storage tank according to this embodiment, alum hydrate 10 is ammonium alum 12 hydrate (AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O) or potassium alum 12. It is characterized by being a hydrate (AlK (SO ₄ ) ₂ · 12H ₂ O). Due to this feature, ammonium alum 12 hydrate and potassium alum 12 hydrate are easily distributed in the market and are inexpensive.

  Moreover, in the thermal storage tank arrangement | positioning method of the latent heat storage material which concerns on this embodiment, the thickener 22 is a substance which belongs to sugar alcohol, It is characterized by the above-mentioned. Due to this feature, since the inorganic salt hydrate 10 is alum hydrate such as ammonium alum 12 hydrate, the thickener 22 is easily dissolved in water that is a constituent of the inorganic salt hydrate 10 and is composed. The latent heat storage material composition 3 is chemically stable. In addition to being able to keep the components of the latent heat storage material 10 in a uniform state, the thickener 22 also has a heat storage and heat dissipation performance that enables the latent heat to be stored or released, as with the latent heat storage material 10. Can do.

  In the method for arranging a latent heat storage material in a heat storage tank according to the present embodiment, the thickener 22 is mannitol. Due to this feature, mannitol increases the viscosity of the melt of the latent heat storage material 10 in a liquid phase, and also causes a phase separation phenomenon between components constituting the latent heat storage material composition 3 and the latent heat storage material composition 3. It is possible to effectively prevent non-uniformity of components due to a density difference with respect to components having different densities. Moreover, since mannitol is nontoxic and non-dangerous, it is easy to handle and inexpensive.

  Moreover, in the arrangement method in the heat storage tank of the latent heat storage material which concerns on this embodiment, the thickener 22 is the water-soluble polysaccharide which belongs to heteropolysaccharide (hetero polysaccharide), and the water contained in the latent heat storage material composition 3 and It is a kind of gellan gum-equivalent substance having physical properties that increase the viscosity of the melt of the latent heat storage material composition 3 in a liquid phase based on the interaction with cations. Further, the thickener 22 is characterized by being LA gellan gum. Due to such characteristics, the LA gellan gum 22 itself does not have heat storage characteristics, but the LA gellan gum 22 is added to the latent heat storage material 10 (ammonium alum 12 hydrate), for example, as small as 1.0 wt%. The gelation of LA gellan gum 22 is promoted only by adding, and the separation of the constituent components in the latent heat storage material composition 3 can be more effectively suppressed. In addition, LA gellan gum 22 does not cause a chemical reaction with alum hydrate even when mixed with alum hydrate such as ammonium alum (latent heat storage material 10) and heated above the melting point under sealed conditions. The function as the thickener 22 can be maintained.

  Further, for example, even if the melt of alum hydrate such as ammonium alum or potassium alum 12 hydrate has an acidic property, LA gellan gum 22 has an acid-resistant physical property. Due to the addition of gellan gum 22, the latent heat storage material composition 3 is not denatured or altered over time. Also, LA gellan gum 22 is easily distributed and widely available in the market and is inexpensive. Moreover, since LA gellan gum 22 is non-toxic and non-dangerous, it is easy to handle. Only a small amount of LA gellan gum 22 of 1 wt% or less is contained in the latent heat storage material composition 3, and the melt of the latent heat storage material composition 3 suppresses dispersion of constituent components due to density differences. The viscosity is sufficient. Moreover, since the addition amount of LA gellan gum 22 is as small as 1 wt% or less, the latent heat storage material composition 3 to which LA gellan gum 22 is added is much larger than the heat storage amount of only the latent heat storage material 10 even when compared with the same volume. It is possible to suppress the decrease.

  Moreover, the effect | action and effect of the latent heat storage tank 80 which concerns on this embodiment which has the said structure are demonstrated. In the latent heat storage tank 80 according to the present embodiment, an additive 20 that adjusts the physical properties of the latent heat storage material 10 is blended with the latent heat storage material 10 that stores or radiates heat using the input and output of latent heat associated with phase change. A latent heat storage material composition 3, a heat medium 83 that is a medium for transferring heat between the latent heat storage material composition 3, and an encapsulating bag 50 that houses and seals the latent heat storage material composition 3 therein. In the latent heat storage tank 80, the latent heat storage material composition 3 is arranged by the above-described arrangement method of the latent heat storage material in the heat storage tank according to the present embodiment. Due to this feature, even if the latent heat storage material composition 3 repeats a cycle of heat storage and its heat release a plurality of times, separation due to the density difference is suppressed among the constituent components of the latent heat storage material composition 3. Therefore, as in the case of the latent heat storage tank 80, in addition to the case where the vertically long encapsulated bag 50 filled with the latent heat storage material composition 3 is accommodated in the latent heat storage tank 80 in a vertical arrangement, the latent heat storage material composition 3 is also stored. Even when the filled bag-shaped heat storage material container is stored in the latent heat storage tank 80 in the vertical direction (vertical direction in FIG. 9), the latent heat storage material composition 3 has its initial heat storage performance. Can be maintained in a stable state for a long time. In particular, even if one encapsulating bag 50 has a vertical dimension of, for example, several to several tens of centimeters, the applicant assigns the heat storage amount of the latent heat storage material composition 3 at the upper and lower portions of the enclosing bag 50. Experiments have confirmed that there is no difference.

  Moreover, in the latent heat storage tank 80 which concerns on this embodiment, the supercooling phenomenon of the latent heat storage material composition 3 is prevented, and the state change (function as a heat storage material) accompanying the phase change of the latent heat storage material composition 3 is stabilized. And the latent heat storage tank 80 using such a latent heat storage material composition 3 can implement | achieve the thermal energy exchange between a heat supply source and a heat | fever supply destination with high reliability.

  That is, as described in the verification experiments 1 and 2, in the method for arranging the latent heat storage material in the heat storage tank according to Example 1 of the present embodiment, the heat release rate of the latent heat storage material composition 3 is the same as that of Comparative Example 1. It is faster than the case. According to the applicant's knowledge, if the heat release rate is relatively high, the latent heat storage material composition 3 tends to be less likely to cause a supercooling phenomenon. Conversely, if the heat release rate is slower, the latent heat storage material composition 3 is overheated. Cooling phenomenon tends to occur easily. If the heat release rate is relatively fast, the amount of heat that can be supplied by the heat release of the latent heat storage material composition 3 (latent heat storage material 10) is required by the heat source on the heat supply side, such as hot water supply equipment or air conditioning equipment that performs air conditioning. This is because the amount of heat required can be reached in a shorter time, and the heat release from the latent heat storage material 10 can follow the heat demand of the heat supply destination.

  In the above, the present invention has been described based on Example 1 of the embodiment and Comparative Example 1, but the present invention is not limited to Example 1 of the above embodiment and Comparative Example 1. The present invention can be changed and applied as appropriate without departing from the scope of the invention.

(1) For example, in Example 1 of the embodiment, the thickener 22 is LA gellan gum. However, the thickener is, for example, a heteropolysaccharide as described above, in addition to the thickener listed in the embodiment. The viscosity of the melt of the latent heat storage material composition in a liquid phase based on the action of water and cations, which are water-soluble substances belonging to polysaccharides, such as the gellan gum equivalent material belonging to Any substance may be used as long as it falls under the substance that enhances the pH. However, it is a premise that there will be no trouble in using the latent heat storage material composition.
(2) Moreover, in Example 1 of the embodiment, the melting point of the latent heat storage material composition 3 was adjusted to about 90 ° C. with mannitol which served as a thickener and a melting point adjuster. Like, you may use separately from a thickener. In addition, the melting point temperature of the heat storage material composition adjusted by the melting point adjusting agent is not limited to about 90 ° C., but is a heat supply destination that uses heat radiated from the heat storage material composition, and a necessary heat source. Any device adjusted to a temperature corresponding to the temperature may be used.

(3) Moreover, in embodiment, although the latent heat storage tank 80 using the latent heat storage material composition 3 was illustrated in FIG. 1, about a latent heat storage tank concerning this invention, a latent heat storage material composition is concerned in the said latent heat storage tank. Any structure, shape, and specification of the latent heat storage tank may be used as long as the structure can partition the object and the heat medium and conduct heat between the latent heat storage material composition and the heat medium.
(4) Further, in the embodiment, the basket 71 which is an example of the guide means is made of a stainless steel net, but the guide means is a latent heat storage material composition such as a stainless steel shelf. A heat storage material container that is in a state in which it is housed is housed in a heat medium in a restrained state and in a state where the arrangement posture is maintained, and the change in thickness along the horizontal direction is limited to an allowable range Anything is fine.
(5) In the embodiment, as the heat storage material, the latent heat storage material that stores or releases heat by moving the latent heat accompanying the phase change is described. However, the heat storage material allows the reaction heat to enter and exit from the chemical reaction with water. It may be applicable to chemical heat storage materials that use heat storage or heat dissipation.

3 Latent heat storage material composition 10 Latent heat storage material (inorganic salt hydrate)
11 Nonhydrate 12 Water 20 Additive 22 Thickener 40 Leakage prevention inner bag (heat storage material container)
50 Enclosed bag (heat storage material container)
54 Fusion part 71 Basket (guide means)
72 Internal space 73 Side 80 Latent heat storage tank 83 Heat medium H Horizontal direction V Vertical direction Sh Horizontal side sectional area Sv Vertical side sectional area t Thickness

Claims (13)

A latent heat storage material that stores or radiates heat using the input and output of latent heat that accompanies a phase change is sealed inside the heat storage material container, and the latent heat storage material allows the latent heat storage material to move between the heat medium in the latent heat storage tank. The heat storage tank of the latent heat storage material, which is an arrangement mode of the latent heat storage material when the latent heat storage material is in the state of being stored in the heat storage material storage tool in transferring heat through the heat storage material storage device In the internal arrangement method,
A thickener that increases the viscosity of the melt of the latent heat storage material in a liquid phase state is blended,
In the heat storage material container, a latent heat storage material composition containing the latent heat storage material and the thickener is stored,
The latent heat storage material composition in the heat storage material container,
The cross-sectional area of the latent heat storage material composition when projected downward in the vertical direction from the upper position of the heat medium is defined as a vertical cross-sectional area Sv, and the latent heat when projected in the horizontal direction through the heat medium When the cross-sectional area of the heat storage material composition is the horizontal cross-sectional area Sh,
In the latent heat storage material composition in a state accommodated in the heat storage material container,
Sv <Sh (1)
Satisfying the condition of the formula (1),
In the state where the latent heat storage material composition is stored, the heat storage material container is constrained by guide means that limits the change in thickness along the horizontal direction to within an allowable range, and in the horizontal direction for each step. A plurality of heat storage material container assemblies arranged side by side are stacked in a plurality of stages in the vertical direction, and the heat storage material container assemblies of the adjacent upper and lower stages are arranged in directions orthogonal to each other. Is stored in the heat medium in a state in which the arrangement posture is maintained,
The latent heat storage material composition is filled in a film-like resin bag that does not transmit liquid ,
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to claim 1,
The resin bag in a state filled with the latent heat storage material composition is accommodated in a plurality of the heat storage material containers in a nested manner, such as nested, The inside of the heat storage material container must be sealed,
A method for arranging a latent heat storage material in a heat storage tank. In the method for arranging the latent heat storage material in the heat storage tank according to claim 1 or 2,
The heat storage material container is a bag or container made of a material that can be fused in a multilayer structure in which a resin and a metal are laminated, and at least a part of the outer periphery that forms the outer contour of the heat storage material container, Having a fusion part sealed by fusion;
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to claim 3,
The heat storage material container is a laminate in which aluminum is deposited on a film-like resin layer containing at least one of polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET). Being a bag of makeup,
A method for arranging a latent heat storage material in a heat storage tank. In the thermal storage tank arrangement method of the latent heat storage material according to any one of claims 1 to 4,
It said guide means, a plurality of the heat storage material container of a state that houses the latent heat storage material composition, can accommodate internal space capable contact with the heating medium in the heat transfer surface of the heat storage material containing assembly Having at least a side part surrounding the internal space, and having a mesh shape with openings
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to any one of claims 1 to 5,
The latent heat storage material comprises an inorganic salt hydrate;
The inorganic salt hydrate is generated by dehydrating the anhydrous hydrated water contained in the inorganic salt hydrate and the added water in the heat storage material container to produce the inorganic salt hydrate. Enclosing in a material container,
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to any one of claims 1 to 6,
The main component of the latent heat storage material is alum hydrate,
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to claim 7,
The alum hydrate is ammonium alum 12 hydrate (AlNH ₄ (SO ₄ ) ₂ · 12H ₂ O) or potassium alum 12 hydrate (AlK (SO ₄ ) ₂ · 12H ₂ O). ,
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to any one of claims 1 to 8,
The thickener is a substance belonging to sugar alcohol;
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to claim 9,
The thickener is mannitol (C ₆ H ₁₄ O ₆ ),
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to any one of claims 1 to 8,
The thickener is a water-soluble polysaccharide belonging to a heteropolysaccharide, and the latent heat storage material composition in a liquid phase state based on the interaction between water and cations contained in the latent heat storage material composition A gellan gum equivalent material having physical properties that increase the viscosity of the melt of the product,
A method for arranging a latent heat storage material in a heat storage tank. In the heat storage tank arrangement method of the latent heat storage material according to claim 11,
The thickener is gellan gum,
A method for arranging a latent heat storage material in a heat storage tank. A latent heat storage material composition obtained by blending an additive that adjusts the physical properties of the latent heat storage material into a latent heat storage material that stores or radiates heat using the input and output of latent heat accompanying phase change, and the latent heat storage material composition In a latent heat storage tank comprising a heat medium that is a medium for transferring heat between objects and a heat storage material container that stores the latent heat storage material composition therein,
The latent heat storage material composition is provided by the method for disposing a latent heat storage material in a heat storage tank according to any one of claims 1 to 12,
A latent heat storage tank characterized by

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