KR20160067609A - Thermal Storage Pipe Filled with Paraffin Phase Change Materials and Temperature Management Method Thereby - Google Patents

Abstract

The present invention relates to a method of preventing a road from being frozen. According to the present invention, a pore of one or more porous particles selected from the group consisting of zeolite, perlite, or graphite is filled with a paraffin-based phase change material (PCM), and a heat storage material pipe filled with a heat resistant heat storage material, in which an outer surface of a porous particle filled with the phase change material is coated with one or more coating agents selected from the group consisting of a silica solidifier, cement, silica, a plaster, or loess, is buried below a sidewalk, a parking lot, or a mountain trail consisting of asphalt, cement, or loess. The present invention relates to a method for insulating a greenhouse by installing a heat storage material pipe filled with a heat resistant heat storage material below the greenhouse. In addition, the present invention relates to a cooling and heating system using a heat storage material, comprising: a heat circulation pipe for transferring heat from the heat storage material pipe; and a heat pump which is a heat exchanger connected to the heat circulation pipe.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat storage material pipe filled with a paraffinic phase change material,

The present invention relates to a method for maintaining a temperature by using a paraffin phase change material (PCM) to manufacture a heat-resistant heat storage material excellent in thermal conductivity, filling it with a heat storage material pipe, .

More specifically, the paraffinic phase change material (PCM) is filled in the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, The outer surface of the porous particles filled with the changeable material is filled with a heat-resistant storage material coated with one or more coatings selected from the group consisting of silica, fire, cement, silica, gypsum or loess, asphalt, cement or ocher A method of preventing freezing of roads buried in a lower part of a car, a parking lot or a mountain trail, a method of inserting a heat storage material pipe filled with a heat-resistant heat storage material in a lower part of a plastic house to heat the plastic house, Can heat circulation pipe; And a heat pump, which is a heat exchanger connected to the heat circulation pipe, and a heating / cooling system using the heat storage material.

Techniques for efficient storage and utilization of heat energy through heat storage systems have been studied over a wide range. The heat storage system is aimed at securing and supplying the heat source in order to recover the excessive heat source through the storage of the heat energy, the supply of the energy and the temporal disparity of the demand, and it can be applied in various ways, Is applied.

The latent heat storage method can store much more energy than the sensible heat storage method. The phase change material (PCM) of the latent heat storage device has a larger storage capacity of heat energy per unit volume and unit weight, It is focusing on the development of new technologies to increase the energy efficiency and storage of high-density energy by using the latent heat of the phase change material rather than the sensible heat.

The most widely used materials for phase change materials (PCM) are salts, brine or mixtures thereof, and organic compounds such as paraffin. They are largely divided into organic and inorganic materials. Organic materials are generally low in density, Small, but less corrosive and less volumetric expansion than inorganic PCM. On the contrary, the inorganic material has a large density and a large amount of latent heat, but it has a disadvantage that it is difficult to be packed because of high corrosivity and large volume expansion.

The conditions of the PCM to be provided for the axial heat dissipation system are as follows: suitable phase change temperature, high latent heat density and heat transfer rate, easy phase equilibrium, low gas pressure, small volume expansion rate, high density, no supercooling phenomenon, high crystal growth rate, Material purchases should be easy and affordable.

Paraffinic phase change materials which satisfy the above conditions and have a very low unit cost are currently used as latent heat storage materials but they are encapsulated because paraffin is spilled out at the melting point or higher. Conventional encapsulation technology of phase change materials is a method of microencapsulating with melamine or formaldehyde resin. However, this method is not practical because it is complicated due to its complicated process, and it is used as a capsule of polymer resin and exposed to the risk of fire And the application is limited due to low heat resistance

These paraffinic phase change materials are microcapsules and gel-like products, and microcapsule products have dried products and aqueous solutions. However, since they have low thermal conductivity in general, they fail to exhibit sufficient heat storage performance against changes in ambient temperature. to be

Korean Patent Publication No. KR2007-0029311A discloses a porous latent heat storage material that can be used for heating and keeping warm, and a method for producing the same, and more particularly, to a method for producing a paraffinic phase change material, And is impregnated with porous clay or perlite in order to be used as a heat supply medium. Since the latent heat storage material is impregnated with porous clay or pearlite with fluidity, paraffin can be prevented from flowing out, Which is a technology capable of increasing the efficiency. However, the latent heat storage material disclosed in the above publication is merely a technique which can not substantially provide a technical means for preventing the outflow of the paraffin phase change material.

Also, Korean Patent Publication No. KR1090526B1 relates to a mortar composition containing a phase change material, which comprises cement, sand, water and paraffinic phase change material, wherein the phase change material is present in an amount of 3-35 And a melting point of 23-32 ° C. When the mortar composition containing the phase change material is applied to a building using the cold storage property of the mortar composition, it is possible to reduce carbon dioxide and reduce energy However, the above-mentioned patent also does not disclose a technical means for preventing the outflow of the paraffin phase change material, and describes only a technique for applying the phase change material to the mortar.

Korean Patent Laid-Open Publication No. 2006-0029311A Korean Patent Publication No. KR1090526B1

The object of the present invention is to provide a heat storage material having excellent thermal conductivity and heat resistance and filling it with a heat storage material pipe so as to be buried underground, , A method of using the method for heating and heating the vinyl house for agriculture and heating and cooling the building.

The present invention relates to a paraffinic phase change material (PCM), which is made of zeolite, perlite or graphite, in order to prevent the paraffin phase change material from flowing out and to improve heat resistance and improve thermal conductivity Wherein at least one coating material selected from the group consisting of silica fires, cement, silica sand, gypsum or loess is filled in the pore of at least one porous particle selected and the outer surface of the porous particle filled with the phase- Is filled with heat storage material pipes and buried underground to store geothermal heat to prevent freezing of roads, to keep warm in agricultural greenhouses and to cool and heat buildings.

More particularly, the present invention relates to a heat storage material pipe filled with the heat-resistant heat storage material manufactured; A heat circulation pipe capable of transferring heat from the heat storage material pipe; And a heat pump, which is a heat exchanger connected to the thermo-circulation pipe. The heating / cooling system is used to store geothermal heat and use it for heating / cooling the building.

The present invention relates to a process for the preparation of a paraffinic phase change material (PCM) wherein the paraffinic phase change material (PCM) is filled into the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, A heat-resistant heat storage material coated with at least one coating material selected from the group consisting of silica, alumina, cement, silica, gypsum or loess; and a heat-resistant heat storage material coated with the coating material A heat storage material pipe filled with a heat-resistant heat storage material characterized by comprising a cylindrical outer housing.

The present invention relates to a process for the preparation of a paraffinic phase change material (PCM), comprising filling a pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite; Coating the outer surface of the porous particle filled with the paraffinic phase change material (PCM) with at least one coating material selected from the group consisting of silica, silica, cement, silica, gypsum or loess; And filling the heat-resistant heat storage material in a pipe having a cylindrical outer housing. The present invention also provides a method of manufacturing a heat storage material pipe filled with a heat-resistant heat storage material.

The present invention relates to a process for the preparation of a paraffinic phase change material (PCM), comprising filling a pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite; Coating the outer surface of the porous particle filled with the paraffinic phase change material (PCM) with at least one coating material selected from the group consisting of silica, silica, cement, silica, gypsum or loess; A step of preparing a heat storage material pipe filled with a heat-resistant heat storage material by filling the heat-resistant heat storage material into a pipe having a cylindrical outer housing; And burying the heat storage material pipe filled with the heat-resistant heat storage material in a lower portion of an asphalt, cement, or loamy soil, a parking lot, or a trail.

The present invention relates to a process for the preparation of a paraffinic phase change material (PCM), comprising filling a pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite; Coating the outer surface of the porous particle filled with the paraffinic phase change material (PCM) with at least one coating material selected from the group consisting of silica, silica, cement, silica, gypsum or loess; A step of preparing a heat storage material pipe filled with a heat-resistant heat storage material by filling the heat-resistant heat storage material into a pipe having a cylindrical outer housing; And installing a heat storage material pipe filled with the heat-resistant heat storage material in a lower portion of the plastic house.

The heat-resistant heat storage material used in the present invention is embedded in a building underground and used to store geothermal heat. The underground temperature is 2 to 4 ° C for 1M from the ground without any seasonal temperature change, and the temperature in the 2.5 to 3.5 M basement is constant at 13 to 16 ° C, so that the phase transition temperature range is 3 to 6 ° C or 13 to 16 ° C The phase change material is filled in the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, and the outer surface of the porous particle filled with the phase- A heat storage material coated with at least one coating material selected from the group consisting of silica, fire-proof, cement, silica, gypsum or loess is prepared and filled into a heat storage material pipe to produce a heat storage structure.

More specifically, the heating / cooling system using the storage material according to the present invention is as follows.

Wherein the paraffinic phase change material (PCM) is filled in the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, A heat storage material pipe filled with a heat-resistant heat storage material coated with at least one coating material selected from the group consisting of silica, alumina, cement, silica, gypsum or loess; A heat circulation pipe capable of transferring heat from the heat storage material pipe; And a heat pump, which is a heat exchanger connected to the heat circulation pipe, to constitute a heating / cooling system using a heat storage material.

According to a preferred embodiment of the present invention, the heat storage material pipe may be buried in a building or soil underground and use geothermal heat of 3 to 20 ° C., a part of the heat circulation pipe is located inside the heat storage material pipe, Lt; / RTI >

A part of the heat circulation pipe according to a preferred embodiment of the present invention can pass through a heat circulation pipe passage between the heat storage blocks, and the heat pump can supply air by heating or cooling.

The heat storage block according to a preferred embodiment of the present invention may be installed on the floor of a building.

A more specific method for producing the heat-resistant heat storage material used in the present invention is as follows.

According to an embodiment of the present invention, the graphite may be at least one selected from the group consisting of natural graphite, expanded graphite, or expoliated graphite. The phase transition temperature range of the paraffinic phase change material (PCM) may be 3 to 33 캜.

The perlite used as one of the porous materials used in the present invention has a similar component to zeolite, but has the advantage that it has stronger water absorption ability than zeolite and excellent heat insulation performance. In particular, perlite is an inorganic material that is rapidly heated and expanded at a high temperature of 900 to 1,100 ° C or higher, and has characteristics of selectively adsorbing unsaturated hydrocarbons or polar substances by the action of cations in its crystal structure, Pore structure). Therefore, the paraffin-phase change material can be filled into the pores using these characteristics.

In order to fill the paraffin-based phase change material, it is necessary to reduce the particle size and increase the pore size of the graphite. Thus, although it is preferred to use expanded graphite, it is also possible to use one or more mixtures selected from the group consisting of natural graphite, expanded graphite, or expoliated graphite .

 Expanded graphite is oxidized by chromic acid and dilute sulfuric acid solution, and when heated rapidly, water is accumulated between the layers of graphite, expanding to 100 to 700% of the initial volume, so it is called expanded graphite do. The limit volume ratio is about 7,500%.

Graphite is produced by crushing process such as hammer mill supersonication and product manufactured by nanoplatelets with high surface area ratio and crushed graphite through crushing process using microwave. To fill paraffin with graphite having a particle size of 13 nm to 120 um

Depending on the application, natural graphite and expanded graphite can be mixed and filled with paraffinic phase change material. The natural graphite used in one embodiment of the present invention preferably uses graphite having an average particle diameter of 60um to 250um. Particularly, when the graphite is used as the porous particles, the heat storage material has excellent thermal conductivity.

According to one embodiment of the present invention, 100 parts by weight of porous particles composed of 5 to 35 parts by weight of zeolite, 5 to 35 parts by weight of perlite and 5 to 30 parts by weight of graphite are mixed with 10 to 35 캜 higher than the melting point of the paraffinic phase- after heating the mixed here after in the paraffinic phase change material is heated to 30-80 ℃ 5 to 80 parts by weight for 10 minutes to one hour at 1200 rpm of the rotational speed of the mixture charged into a high speed mixing, 1-10 kgf / cm ³ The paraffinic phase change material can be filled in the pores by the action and pressure of the cations of the porous particles.

A weight part 5-40 was added to 100 parts by weight of the porous particles filled with the paraffin-based phase change material thus prepared, and the coating material suitable for use such as silica, fire, cement, silica, gypsum, It is possible to manufacture a heat storage material having excellent heat resistance and thermal conductivity by inhibiting the outflow of the paraffinic phase change material.

The silica and fire is the chemical composition as said inorganic for environmentally friendly ocher silica consisting of a main component such as yellow soil component, alumina silicate and calcium oxide fire is _{SiO 2 49.2%, Al 2 O} 3 18.1%, CaO 16.4% as a main component and the K ₂ O, SO ₃ , and Fe ₂ O ₃ , it contains components similar to those of loess, which can improve the compatibility with the loess, which is effective when used in the loess pavement, the loess brick, and the loess interior material.

The method for producing the heat-resistant heat storage material of the present invention can be produced through the following steps.

At least one porous particle selected from the group consisting of zeolite, perlite or graphite is heated to a temperature of 5 to 35 degrees above the melting point of the paraffinic phase change material (PCM) using a mixer Heating step; Mixing the porous particles heated in the heating step into a paraffinic phase change material (PCM) and mixing the mixture in a mixer; A filling step of filling a pore size of the porous particles with a paraffinic phase change material (PCM) by applying pressure to the porous particles and the paraffinic phase change material (PCM) mixed in the mixing step; Coating the outer surface of the porous particles having undergone the filling step with at least one coating material selected from the group consisting of silica, alumina, cement, silica, gypsum or loess; and heat-resistant heat storage material.

The phase transition temperature range of the paraffinic phase change material (PCM) used in the production method of the present invention may be from 3 to 33 캜. In addition, the mixing step may be performed such that the rotation speed per minute (rpm) of the mixer is 1,000 to 3,500, and the pressure of the filling step may be 1 to 10 kgf / cm ³ .

The heat-resistant storage material according to the present invention comprises a heat storage material pipe filled with a heat storage material having improved heat resistance by preventing the paraffinic phase change material from flowing out and having excellent thermal conductivity including graphite; A heat circulation pipe capable of transferring heat from the heat storage material pipe; And a heat pump connected to the heat circulation pipe. The heat pump comprises a heat accumulation material, and the heat accumulation function is performed using the geothermal heat. The heat pump can be used to simultaneously perform the cooling and storage functions Effect.

In addition, it is possible to reduce energy loss in heating and cooling in the summer or winter when there is a significant temperature difference between outdoor and indoor by connecting with the ventilation system of the house. In addition, by keeping the indoor temperature of the building at a proper temperature while using less energy, And it is possible to save energy for heating and cooling.

Also, the heat accumulating material deck is manufactured and used in the trail or walkway using the heat-resistant aggregate for preventing freezing, so that it is possible to prevent the freezing in winter and to prepare for safety accident, and it can be used for thermal insulation material for farming using the heat accumulating material pipe.

1 is a view showing a heat storage material pipe having a heat-resistant heat storage material and a heat circulation pipe according to an embodiment of the present invention.
2 shows a heat storage block in which a part of the heat circulation pipe according to an embodiment of the present invention is configured to pass through the heat circulation pipe passage between the heat storage blocks.
3 is a cross-sectional view of a house equipped with a heating and cooling system using a heat storage material according to an embodiment of the present invention.
4 is a view illustrating an anti-icing heat storage material pipe filled with graphite on a central shaft according to an embodiment of the present invention.
5 shows a heat storage material deck for preventing freezing according to an embodiment of the present invention.
6 is a view illustrating a construction of a heat storage pipe for preventing ice formation on an asphalt road according to an embodiment of the present invention.
7 is a view illustrating a construction of a heat storage pipe for preventing ice formation on a general road according to an embodiment of the present invention.
8 is a view illustrating an agricultural storage pipe according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to examples and the like. However, these examples are intended to further illustrate the present invention, and the scope of the present invention is not limited to these examples.

First, a method for producing the heat-resistant heat storage material used in the present invention will be described in detail

The zeolite used as the porous particles used to fill the zeolite used in the present invention with the paraffinic phase-change material is preferably a porous zeolite having a specific surface area of 300 to 1,000 m 2 / g and an average particle size of 10 nm to 350 μm The paraffinic phase change material was used to heat and pressurize. More preferably, it is excellent in efficiency to fill paraffin with an average particle diameter of 50 nm to 150 μm.

The amount of the paraffinic phase-change material used for filling is preferably 20 to 100 parts by weight, more preferably 30 to 80 parts by weight, based on 100 parts by weight of the zeolite particles.

When the amount of the paraffinic phase-change material is 100 parts by weight or more, the pore size of the zeolite particles and the surface of the zeolite particles are excessively filled with the heat storage material, causing aggregation or layer separation, or bursting during heat storage. Particularly, when the volume ratio of the porous zeolite pore is less than 1,000%, the paraffin phase change material can be separated from the porous zeolite due to the volume expansion in the melting process at the melting point of the paraffin, which is the phase change material

Particularly, it is preferable that the porous zeolite is heat treated at a high temperature to use activated zeolite. When the porous zeolite is heat-treated at a high temperature, the residual moisture is reduced and the loss of ignition is greatly reduced, The use of such activated zeolites is more advantageous for absorbing paraffin phase change materials. This is because, when heated, the binding of cations such as Na ⁺ , K ⁺ , Ca ²⁺ , and Mg ²⁺ of the porous zeolite becomes weak. Therefore, it is heated to a temperature higher than the melting point of the paraffinic phase- system were charged into a phase change material is preferable to the filled with a heating temperature of 35 to 120 ℃ and mix for 1,000 to 10 minutes to one hour at a rotating speed of 3,500 rpm in a high-speed mixer, applying a pressure of 1 to 10 kgf / cm ³ Do. More preferably, it is effective to proceed at a heating temperature of 85 DEG C for 20 minutes.

Next, a method of filling a pearlite with a paraffinic phase change material will be described. The heating temperature, the pressure, and the rotational force of the high-speed mixer are similar to those of zeolite.

Perlite is a mineral which is rapidly heated and heated to 870 ℃ to 1100 ℃. It has a specific gravity of about 0.08-0.60 when the grain size is 5mm or less and 0.04-0.2 or less when the grain size is 1mm or less. The conductivity is about 0.028-0.045w / mk. The limit volume ratio is about 8000%.

Perlite can be divided into three types according to expansion method and conditions. Firstly, it is a commonly used open pore perlite, the second is a closed pore perlite, the third is a soap bubble It is a balloon with completely closed pores such as droplets. The perlite used for filling the paraffinic phase change material used in the present invention is a generally open pore expanded perlite having an average particle diameter of 50 nm to 200 μm and the expanded perlite has a specific gravity of about 0.04 to 0.20 It has fine pores and a cracked surface inside.

First, a paraffin-based phase change material (specific gravity: 0.87 to 0.91) having a large specific gravity is placed at the bottom of the mixing presser by heating the pearlite to 85 DEG C and introducing it into the paraffinic phase change material heated to 65 to 75 DEG C, High speed mixing at 1200 rpm results in the mixing of paraffinic phase change material and perlite. When the pressure is applied at 5 kgf / cm ³ in the mixing process, paraffin phase change material is filled in the perlite pore.

The paraffinic phase change material is used in an amount of 20 to 100 parts by weight, more preferably 80 parts by weight, per 5 to 100 parts by weight of the perlite particles. When the paraffinic phase change material is used in an amount of 100 parts by weight or more, the pore size of the perlite particles and the surface thereof are excessively filled with the heat storage material, resulting in lumps and layer separation. Also, breakdown occurs above the melting point temperature of the filled paraffinic phase change material.

Next, filling of the paraffinic phase change material using the graphite material will be described. In the case of zeolite, there is an advantage that the absorption of the paraffinic phase change material by the cation exchange can be utilized for effective filling, while the advantage of the pearlite is the heat resistance and the heat insulation against the specific gravity. However, the zeolite and the pearlite have a very low thermal conductivity It is essential to improve the thermal conductivity when used as a heat storage material. Therefore, graphite is used as a material that can improve the thermal conductivity by complementing it.

Since natural graphite particles have an average particle size of 300 to 500 μm and fine pore size, it is necessary to reduce the size and increase the pore size in order to effectively fill the paraffin-based phase change material. In the present invention, expandable graphite is formed by acid treatment of natural graphite with nitric acid and sulfuric acid, and expanded graphite having a high surface area ratio is produced through a crushing process using a microwave Or exfoliated graphite having a higher surface area ratio is pulverized by using a crushing process such as Hammer Mill Supersonication, and then they are mixed with 70 parts by weight of expanded graphite, 15 parts by weight of peeled graphite, And 15 parts by weight of natural graphite.

The average particle diameter of the expanded graphite used is 50nm to 250μm and the thermal conductivity is 7.890w / mk, which is much higher than that of zeolite or perlite, but lower than that of pure graphite or exfoliated graphite.

Graphite is a mixture of 100 parts by weight of graphite obtained by mixing expanded graphite, natural graphite and exfoliated graphite in a ratio of 70:15:15 by weight, and 5 to 80 parts by weight of a paraffinic phase-change material is mixed to give a heat conductivity of 6.26 w / mk , The thermal conductivity of the paraffinic phase change material was much higher than 0.35 w / mk, which is its thermal conductivity (solid). The specific filling conditions are the same as the filling of the paraffinic phase change material using zeolite particles.

The physical properties of the paraffinic phase-change material used in the present invention are shown in Table 1 below. Paraffinic phase change materials can be varied depending on the purpose of use, such as the use area of the heat storage material, the purpose of use, and the range of physical properties such as melting point, heat of fusion and thermal conductivity depending on the molecular formula.

Kinds Melting point
(° C) Heat of fusion
(kJ / kg) Thermal conductivity
(w / mk) density
(x10 ² kg / m ³⁾ specific heat
(kJ / kg.k) Temperature conductivity
(w / mk) C ₃₀ H ₆₂ 65.8 220-243   0.3 0.78-0.81 1.8-2.3 0.27-0.085 C ₂₈ H ₅₈ 61.4 140-160   0.37 0.81-0.76 1.7-2.2 0.25-0.082 C ₂₀ H ₄₂ 36.4 180-190 0.37-0.15 0.83-0.78 1.8-2.3 0.22-0.081 C ₁₉ H ₄₀ 32.3 170-190 0.34-0.15 0.85-0.76 1.8-2.3 0.22-0.082 C ₁₈ H ₃₈ 28.2 160-180 0.32-0.15 0.83-0.76 1.8-2.1 0.21-0.093 C ₁₆ H ₃₄ 15.8 110-130 0.31-0.13 0.82-0.77 1.8-2.2 0.22-0.087 C ₁₄ H ₃₀ 6.5 160-180 0.28-0.13 0.82-0.74 1.78-2.3 0.21-0.089

In the foregoing, a method of filling the pores of each porous particle with a paraffinic phase change material has been described. However, in the production of a heat storage material having excellent heat resistance and thermal conductivity, it is necessary to effectively combine the advantages of zeolite capable of effectively filling phase change materials, the pearlite having heat resistance against specific gravity, and the graphite capable of improving thermal conductivity. However, when three kinds of porous particles having different particle sizes and densities are simply mixed and used, the phenomenon of aggregation and layer separation occurs in the process of filling the paraffinic phase change material. Therefore, A heat storage material having excellent thermal conductivity can be produced.

In order to overcome such a problem, the present invention is characterized in that porous particles having a volume ratio of 1,000 to 7,500% of the ultimate absorption amount of the phase change material to the pore size of the porous particles are used. More preferably, the volume ratio of the porous particles is more than 7,000%.

In the present invention, it is not a simple mixing of different particles. In the case of simple mixing, there is a problem such as lumps and layer separation as described above. In the present invention, it is possible to overcome the above problems by filling the paraffin phase change material with the pressure of the porous particles after heating and high-speed mixing. In addition, by using the paraffin phase change material in an amount of 80 parts by weight or less based on 100 parts by weight of the porous particles, lumps and layer separation phenomena were solved.

On the other hand, the porous particles of zeolite, perlite or graphite are not only expanded in volume due to heating, but also have pores and pores. The heating of the porous particles by 20 to 30 ° C higher than the melting temperature of the paraffinic phase-change material is intended to effectively fill the paraffinic phase-change material through the expansion of the pore size of the porous particles. Min for the even filling of the paraffinic phase change material, and the filling density is increased by 25-40% when the pressure of 5 kgf / cm ³ is applied thereto.

On the other hand, paraffin-based phase change materials generally have a specific gravity higher than that of zeolite or perlite, lower than that of graphite, so that it is difficult to mix evenly and effectively fill. However, when a material having a volume ratio of porous particles of 7,000% or more is used, And filling the mixture using high speed mixing and pressure. Thus, a heat storage material having excellent heat resistance and thermal conductivity could be manufactured.

It is another object of the present invention to provide a variety of functional storage materials according to the intended use. For example, if the purpose of using heat insulation and heat storage is large, it is possible to manufacture a heat storage material having excellent heat insulation and heat storage performance by mixing the paraffin type phase change material with porous particles of expanded graphite and natural graphite.

That is, in the production of the heat storage material with improved heat insulation, 55 parts by weight of perlite, 80 parts by weight of paraffinic phase change material in 100 parts by weight of porous particles of 45 parts by weight of graphite mixed with expanded graphite and exfoliated graphite in a weight ratio of 7: do. The graphite obtained by mixing perlite, expanded graphite, pure graphite and exfoliated graphite in a high-speed mixer is heated at a temperature 20 to 35 ° C higher than the melting point of the paraffinic phase-change material, and the paraffinic phase- Mixer is charged, and the mixture is mixed at a rotation speed of 1,000 to 3,500 rpm for 10 minutes to 1 hour, and then the mixture is charged under a pressure of 1 to 10 kgf / cm ³ . The melting temperature of the paraffinic phase-change material used here is shown in Table 1.

The storage material of the present invention is applicable to various fields. That is, the heat storage material may be used as the heat storage material itself, or a board or a brick having heat storage performance when a board, a brick, or the like is manufactured using a mortar including a heat storage material.

More specifically, the heat storage material can be suitably used as a wall material for civil engineering and building materials, an interior material for ceiling materials, flooring materials, a roofing material, a roofing material for building roofing materials, and an exterior material such as fireproof materials.

Also, it can be applied to materials such as antifreezing agents for roads and structures, anti-icing agents, air conditioning systems for buildings, and floor heating. As mentioned above, The phase change material can be selected appropriately according to the melting point.

For example, when used as an interior material such as a wall material or a ceiling material of a building, a phase change material having a melting point of 16 to 25 DEG C is used. When it is used in a flooring material, bathtub, bathroom floor, It is preferable to use a paraffinic phase change material.

The use of a paraffinic phase change material having a pore size range of this melting point filled in the pores of the porous particles prevents the temperature from rising or falling at an appropriate temperature range of 22 to 26 DEG C in the room, Can be maintained at an optimum temperature, so that an effective operation of the air conditioner can be achieved, so that the reduction of carbon dioxide and the energy reduction can be expected.

Porous particle pore filling experiments of paraffinic phase change materials

In the present invention, 100 parts by weight of any one of inorganic porous particles composed of zeolite, perlite and graphite is heated to 85 캜 and then heated at a temperature of 70 캜 to 80 parts by weight of a paraffinic phase change material at 1200 rpm For 20 minutes, it was confirmed that a paraffin-based phase change material could be filled in the pores of the inorganic material porous particles when a pressure of 5 kgf / cm ³ was applied

Preparation of porous particle storage material filled with phase change material

≪ Example 1 >

1 Kg of zeolite having an average particle diameter of 150 μm (First Ceramic) was heated to 85 ° C. and mixed with 800 g of paraffin (Nippon Petroleum Ejucole, C ₁₈ H ₃₈ ) heated to 70 ° C. in a high-speed mixer for 30 minutes at 1,500 rpm And a pressure of 5 kgf / cm ³ was applied thereto to produce a heat storage material having nonflammable and heat-resistant properties and having an average particle diameter of 180 to 350 μm.

≪ Example 2 >

1 Kg of perritic (High-performance Filler) having an average particle diameter of 100 μm was heated to 85 ° C. and mixed with 800 g of paraffin (C ₁₈ H ₃₈ ) heated to 70 ° C. in a high-speed mixer for 30 minutes at 1,500 rpm. cm < ³ > to produce a heat storage material having an incombustible and heat-resistant property and having an average particle size of 150 to 300 mu m which is heat-insulating.

≪ Example 3 >

1 Kg of graphite having an average particle diameter of 15 nm to 100 탆 obtained by mixing Expandable Graphite and Exfoliated Graphite (Amorphous Cement) at a weight ratio of 70/30 was heated to 90 캜 and then heated to 70 캜 in a high-speed mixer Paraffin (C ₁₈ H ₃₈ ) was mixed with 1,500 rpm for 30 minutes, and a pressure of 5 kgf / cm ³ was applied to produce a heat storage material having an average particle diameter of 60 nm to 360 袖 m which is nonflammable and heat resistant and has a thermal conductivity of 7.65 w / .

<Example 4>

0.3 kg of zeolite having an average particle size of 10 to 150 탆, 0.3 kg of a perlite having an average particle size of 10 to 150 탆, 0.4 kg of mixed graphite having an average particle size of 20 to 150 탆 mixed with expanded graphite and natural graphite at a weight ratio of 7: (C ₁₈ H ₃₈ ) heated to 70 ° C. in a high-speed blender at a temperature of 90 ° C. and then mixed with 800 g of paraffin (C ₁₈ H ₃₈ ) heated at 70 ° C. for 30 minutes at 1,500 rpm and then subjected to a pressure of 5 kgf / cm ³ to produce a non-flammable and heat- / mk and an average particle diameter of 60 to 390 m.

In the production of the heat storage material in which the pore size of the porous particles is filled with the paraffinic phase change material, if the paraffin used in 100 parts by weight of the porous particles is 100 parts by weight or more, the pore size and the surface of the porous particles are filled So that lumps or stratum separation occurred or bursting occurred during the heat accumulation process.

Particularly, when inorganic porous particles having an average particle diameter of 10 nm or less of zeolite, perlite or exfoliated graphite are used, particle clustering or layer separation occurs even when the paraffin used in 100 parts by weight of the porous particles is 90 parts by weight or more.

When the volume ratio of the pore size of zeolite, perlite, and exfoliated graphite to be used is less than 1,000%, the paraffinic phase change material is separated from the porous particles due to the volume expansion in the melting process at a temperature higher than the melting point of the paraffin, And that the volume fraction of the pore size of the porous particles to be used should be 5,000% or more because there was a phenomenon of layer separation even under 1300%.

The density of the porous particles such as zeolite, perlite and graphite is preferably 0.002 to 0.08 g / cm 2 or less. When the volume ratio of zeolite and perlite is 8,000% or more, the paraffin absorption rate is high but the compressive strength and heat insulating property are poor. The thermal conductivity of the heat storage material was 6.23w / m, k when the weight ratio of graphite was 40% or more.

Also, the mixing density of the paraffin phase change material was significantly lower when the mixing pressure was ³ kgf / cm ³ when the mixture was mixed using a high speed mixer at a rotational speed of 800 rpm or less within 20 minutes.

Production of heat-resistant heat storage material by surface coating of heat storage material

&Lt; Example 5 >

0.3 kg of zeolite having an average particle size of 10 to 150 탆, 0.3 kg of a perlite having an average particle size of 10 to 150 탆, 0.4 kg of graphite having an average particle size of 20 to 150 탆 in a weight ratio of expanded graphite and natural graphite of 7: 3, After heating to 90 ° C, 800 g of paraffin (C ₁₈ H ₃₈ ) heated to 70 ° C in a high-speed mixer was mixed with the mixture at 1,500 rpm for 30 minutes and then subjected to a pressure of 5 kgf / cm ³ to produce a non-flammable and heat- / mk and an average particle diameter of 60 to 390 m. 0.3 Kg of silica fire-retardant was added to the prepared storage material, and the mixture was mixed in a high-speed mixer rotating at a temperature of 30 ° C and at 1,500 rpm for 30 minutes to obtain a heat-resisting material coated with a coating material having an average particle size of 350 to 500 μm A heat storage material was produced.

The compositional components of the silica fire retardant used for the surface coating of the heat storage material are shown in Table 2 below.

Silica solid fire components and composition ingredient Al ₂ O ₃ SO ₃ SiO ₂ CaO Fe ₂ O ₃ MgO TiO ₂ NaO ₂ K ₂ O Furtherance(%) 9.31 2.0 43.2 39.5 1.76 2.67 0.41 0.27 0.88

Particularly, the composition of the thermal storage material according to the additional use and performance of the thermal storage material can be determined by filling the paraffin with different compositions of zeolite, perlite and graphite as shown in Table 3 below, And a heat storage material with improved heat insulating properties.

Uses / Performance Composition (parts by weight) Zeolite Purite black smoke paraffin Silica fire Heat-resistant storage material 30 30 40 80 30 Dehumidifying storage material 55 - 45 80 30 Thermally conductive storage material - 30 70 80 30 Adiabatic heat storage material - 70 30 80 30

On the other hand, zeolite and perlite porous particles in the composition of the heat storage material contain a silicon element in a chemical structure, and a chemical reaction may directly occur with the silica solidification. Therefore, when the silica solidification is mixed to form a board, the compression strength is 210 kgf / cm ² , and 40% of the weight of the conventional stover board.

In addition, the surface coating of the heat storage material can be used not only with the above-mentioned silica fireproofing but also with cement, anhydrous gypsum, silica sand and loess, respectively. In this case, it is also possible to manufacture a heat storage material having improved heat resistance Respectively.

Since the paraffin phase change material is not exposed to the outer surface of the thermal storage material by coating the surface of the thermal storage material using such silica fume, cement, anhydrous gypsum, silica sand and loess, This improvement and heat resistance were improved.

Next, the application of the heat-resistant heat storage material manufactured according to the method of manufacturing the heat-resistant heat storage material used in the present invention described above to the heating and cooling system of the building will be described in detail with reference to the accompanying drawings.

1 is a view showing a heat storage material pipe having a heat-resistant heat storage material and a heat circulation pipe according to an embodiment of the present invention.

Graphite is a mixture of 100 parts by weight of graphite obtained by mixing expanded graphite, natural graphite and exfoliated graphite in a ratio of 70:15:15 by weight, and 5 to 80 parts by weight of a paraffinic phase-change material is mixed to give a heat conductivity of 6.26 w / mk , The thermal conductivity of the paraffinic phase change material was much higher than 0.35 w / mk, which is its thermal conductivity (solid). 60 parts by weight of silica fume, 10 parts by weight of natural graphite, and 30 parts by weight of yellow soil were mixed and coated and sintered, and then a part of the aggregate was produced at a size of 20-30 mm. , 10 parts by weight of natural graphite, and 20 parts by weight of margarite are mixed to prepare a heat storage material pipe

The heat storage pipe 101 is filled with the heat-resistant heat storage material 100 and the heat circulation pipe 102 is installed inside and extends to the outside. One end of the heat circulation pipe is connected to the air inlet 103 Heat-absorbing heat dissipation port 104. The sucked air is heat-exchanged in accordance with the phase transition temperature of the heat-resistant heat storage material in the heat storage material pipe 101 filled with the heat-resistant heat storage material 100, 104 to the outside of the heat storage material pipe 101.

The heat storage material was prepared by fixing 5-10 parts by weight of a graphite paraffin heat storage material, 70 parts by weight of silica fine powder, 5 parts by weight of natural graphite, 20 parts by weight of natural white graphite, And 5-10 parts by weight of water and compressed by dry compression. In particular, the compression and tensile strength of the heat storage material pipe is set by structural calculation so that there is no abnormality in the building structure before installation in the building. The compressive strength of the heat storage material pipe 101 manufactured is 245-280 kgf / cm ² , And the flexural strength is preferably 50-80 kgf / cm or more.

In this case, the storage strength of the paraffin storage weight portion 5-10 is 70, and the storage capacity is 1200 Kcal, and the weight is 270 kg. Such a heat storage pipe may have a different buried amount depending on the area of the building. When the area of the building is 30 m 2, it is preferable that the size of the heat storage material pipe is Ø100 mm and the length is 1500 mm.

2 shows a heat storage block in which a part of the heat circulation pipe according to an embodiment of the present invention is configured to pass through the heat circulation pipe passage between the heat storage blocks.

In the heat storage block 200, the size of the heat storage block top plate 201 is preferably 350 mm × 350 mm and the thickness is preferably 70 mm, and the heat storage block bottom plate 202 having the same size as the heat storage block top plate is provided, May be fixed by means of fastening means (204).

In addition, it is preferable that a heat circulation pipe passage 203 is provided in the heat storage block upper plate 201 and the heat storage block lower plate 202 so that the heat circulation pipe 102 can pass through and be fixed respectively.

It is preferable to use the same material as that of the heat storage material provided in the heat storage material pipe and more preferably to have the same compression and tensile strength properties.

3 is a cross-sectional view of a house equipped with a heating and cooling system using a heat storage material according to an embodiment of the present invention.

It is preferable that the heat storage material pipe 101 and the heat storage block 200 are installed together on the foundation of a building column. Calculate the quantity of heat storage pipe (101) and heat storage block (200) that fit the width of the building, and install heat storage pipe after foundation of building column. The heat storage material pipe 101 and the heat storage block 200 are buried under 2 M and connected to the heat circulation pipe 102. The heat storage block 101 is installed on the ground and heat- And is discharged to the heat radiation outlet 306 inside the building. In this connection, external air is sucked through the air purifier 303 from the external air inlet 305 for temperature regulation to be heat-circulated in the heat circulation pipe housing. Also, the hygrometer 304 can be used to control the outside automatically by using the automatic home control system in conjunction with the heat exchanger 301.

Built-in bricks used as interior materials for construction are 200mm in width, 230mm in width and 200mm in thickness. The thickness of the built-in brick is 130mm, the paraffinic phase change material phase change material (PCM) 30wt% of the purite heat storage material coated with the silica fireproofing by filling the pearlite in the temperature range 22 ° C to 24 ° C, 20 parts by weight were mixed and put into the inner surface of the mold. The remaining thickness of 70 mm was mixed with 5 parts by weight of graphite heat storage material, 50 parts by weight of silica fire retardant and 45 parts by weight of loess, put outside the mold and compression molded to produce built-up bricks. The built-in brick can be installed on the outer surface of the wall by using a hanja or jade or natural inorganic powder.

The architectural flooring is composed of 30 parts by weight of paraffinic phase change material phase change material (PCM) temperature region 28 ° C. to 30 ° C. in the form of a thermal storage material coated with silica fireproofing, 55 parts by weight of silica fireproofing, After the reblocking is completed, a heat circulation pipe is installed, and then 30 parts by weight of the pervious heat storage material, 40 parts by weight of the silica fireproofing agent and 30 parts by weight of the loess can be blended to fill the upper part of the heat storage material block.

30 g of a heat storage material coated with a silica fire-retardant, 35 parts by weight of silica fire-retardant, 15 parts by weight of carbonized wood powder, And 20 parts by weight of loess was mixed to prepare a board having a size of 350 mm * 350 mm and a thickness of 30 m.

The construction of the building using the above-mentioned method, the building interior material, the building floor and the insulating ceiling board, and the paraffinic phase change material phase change material (PCM) storage building material using the geothermal heat, It is not only inexpensive, but also very low maintenance and maintenance cost, and very competitive. Particularly, water is not used for the safety of construction caused by leaking water and maintenance cost due to corrosion, and paraffin-based phase change material phase change material (PCM) accumulation building material can be used semi-permanently

The paraffinic phase change material (PCM) used in the present invention is filled in the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, The heat storage material pipe filled with the heat-resistant heat storage material coated with at least one coating material selected from the group consisting of silica, alumina, cement, silica, gypsum or loess is coated on the outer surface of the porous particles filled with the phase change material, It is useful to use as a heat storage deck and farming insulation as a walkway.

Hereinafter, the heat-resistant storage material and the heat storage material filled with the storage material are used to prevent frost formation on the road, and the thermal storage deck and the thermal insulation material for agricultural use are described in detail in the trail or walkway.

 Paraffin Phase Change Material Phase Change Material (PCM) Paraffin storage material for preventing freezing of road by using heat storage material is manufactured by using products coated with silica and fire or cement in perlite and graphite products, It is preferable to use the variable material phase change material (PCM) temperature range 3 캜 -6 캜.

20 parts by weight of paraffin peroxide filler sintered material having a compressive strength of not less than 245 kgf / cm 2 and 10 parts by weight of sand, 20 to 50 parts by weight of crushed stone aggregate having a size of 5-10 mm, 45 parts by weight of fire and 5 parts of yellow loam are mixed to prepare a paraffin regenerated aggregate having an aggregate form size of 25 to 30 mm. The paraffin-regenerated aggregate thus produced can exhibit paraffin function without abnormalities even after 3 hours at 350 ° C as well as in compressive strength.

This heat-resistant paraffin heat storage material is coated with silica fireproofing after being filled with perlite, and the coated mortar is coated with silica fireproofing and loess with 55:45 parts by weight of the mortar, It is an excellent material for filling packing coating rather than cement.

The paraffin regenerated aggregate can be used for road pavement by blending 100 parts by weight of asphalt and 15 parts by weight of asphalt pavement. In case of loess pavement or cement pavement, the paraffin weight part used in the case of ocher pavement or cement pavement can be used in the same ratio as that of asphalt pavement, .

In the above, paraffin heat accumulation aggregate can be directly mixed with yellow soil, cement and asphalt, but another form is to use heat storage material pipe. This is because the heat storage material pipe filled with the heat-resistant heat storage material used in the cooling and heating system using the heat storage material described above is directly used for prevention of road freezing. The heat storage material pipe for the road is in the form of a heat storage pipe without the heat circulation pipe.

4 is a view illustrating an anti-icing heat storage material pipe filled with graphite on a central shaft according to an embodiment of the present invention. 4, the size of the heat storage material pipe is Ø100 mm * L1500 mm and the temperature of the paraffinic phase change material (PCM) in the upper part 401 is in the range of 3-6 ° C. And the lower portion 402 is preferably 6-10 ° C. in the paraffinic phase change material (PCM) temperature region, and in the case of cold fat, it is preferable that the size of the heat storage material pipe is Ø200 mm * L2000 mm.

In particular, the heat storage pipe for roads is made of perlite filled with paraffin phase change material (PCM) to increase the thermal conductivity by filling graphite with a thickness of 20-50 mm in the center axis 403, . Such a heat storage pipe can also be usefully used as a storage material for prevention of freezing of ice in a parking lot of an in-service parking lot.

The heat storage material for graphite filling which is excellent in thermal conductivity is produced by coating graphite with paraffin and then coating with silica fire. The heat storage material having excellent heat insulating property is manufactured in the form of sintered particles coated with paraffin and filled with silica, It is possible to manufacture a heat storage material pipe for preventing freezing.

Sintered particles coated with paraffin and paraffin which have excellent thermal insulation are coated on the outer surface of the pipe, and sintered particles coated with silica firepot can be used as the inner core material. In order to maintain the compressive strength, 5 parts by weight of graphite sintered particles and perlite sintered particles, 60 parts by weight of silica solids, and 30 parts by weight of loess are mixed to prepare a heat resistant aggregate for preventing freezing, .

5 is a view showing a heat accumulating material deck according to an embodiment of the present invention. More specifically, a heat accumulating material deck is manufactured and used in a trail or a walkway using heat-resistant aggregate for preventing freezing, The possible forms are as follows.

The heat storage material deck 500 is packed in a paraffin-based phase change material (PCM) temperature range of 3 ° C to -6 ° C, coated with an environmentally friendly silica filler, and sintered. Thereafter, 50 parts by weight of silica- 10 parts by weight of a paraffin sintered heat storage material, 5 parts by weight of a phosphorescent material and 10 parts by weight of a non-slip aggregate are mixed. It is located on the deck of the phosphorescent material (501) and the non-slip stone (502) so that it can be filled with phosphorescent light during the day and reflected at night. Such a functional heat storage deck is useful for safety and can also be used as a maintenance material for a climbing road. In addition, the heat storage material can be combined with a heat storage function using geothermal heat by forming a heat circulation pipe coupling hole 503, which is connected to another heat accumulation pipe buried in the above-mentioned underground space and thermally circulated.

The more specific type of thermal insulation materials for farming using the heat storage material pipe is as follows. (PCM) in the temperature range of 14 to 18 ° C is coated with graphite and then coated with silica fireproofing. After filling the inner surface of the pipe in the pipe extrusion process, it is refilled on the outer surface and re-extruded in the form of a double pipe . Such a double-filled pipe is useful to be used as a thermal insulator for agricultural use by being buried in the lower part of a vinyl house for agricultural use.

&Lt; Example 6 >

By using a heat-resistant heat storage material particles and heat the heat storage material composition prepared in the present invention, the heat storage material pipe, by using a heat storage block roof area of 8 m ^2, the wall 9 m ^2, the bottom 2.23 m ^2, the ceiling 2.25 laboratory houses m ² FIG. 3 were fabricated and tested.

The materials and specifications used in the experimental house are as follows.

The walls were constructed with concrete thickness of 100mm, insulation wall thickness of 100mm, cement brick size of 57 * 90 * 190mm, cement plaster and gypsum board. The bottom was cement thickness 50mm, insulation wall thickness 50mm, cement plaster, The roof was installed with asphalt single insulation and insulation thickness 100mm, and the ceiling was made of gypsum board.

The temperature of the paraffin heat storage material used in the heat storage material pipe and the heat storage material board was 22-30 ° C, the heat of fusion was 170-190 KJ / Kg and 40-45 Kcal / Kg.

The exterior wall of the house was roasted loess brick with thickness of 100mm, the insulation surface was 100mmfmf and the size of storage material brick was 200 * 230 * 200mm. The wall plaster was prepared by mixing 50 parts by weight of a perlite having a high heat insulating property and a high thermal conductivity, and 50 parts by weight of silica fine powder and 50 parts by weight of graphite using a heat storage material composition. In addition, the paraffin storage material phase change temperature was 22-30 ° C, the heat of fusion was 170-190 KJ / Kg and 40-45 Kcal / Kg.

As shown in FIG. 3, after the heat storage material pipe 101 is buried at a depth of 2 m-3.5 m in the basement of the building, air that has been stored through the pipe of the heat circulation pipe 102, Air is supplied to the interior of the house through the external air inlet 305 and the heat exchanger 301 through the heat discharging outlet 306. On the other hand, air for ventilation is supplied to the inside of the house through the external air inlet 302 and the air purifier 303.

In order to heat and cool the experimental house, a heat storage material pipe was buried underground and air and water were simultaneously used. In the basement of the building, the annual temperature is maintained at 16-17 ℃ at the temperature of 10-15 ℃ for 1.5-2m at 3m. This is because the pure graphite with high conductivity is mixed with the perlite which is superior in heat insulation property to the heat-resistant heat storage material with the ground temperature of about 150-200m underground at the temperature of 10-15 ° C, and paraffin Was used. The floor of the building is equipped with a thermal storage material, so that solar heating can be used independently for winter heating. The latent heat of the underground was heated by using heat exchanger and heat pump. Outer temperature was 15-32 ℃ in summer and outside temperature was minus 11 ℃ - 2 ℃ in winter.

As a result of the experiment, it was found that the temperature change of the room temperature was about 2.5-5 ℃ depending on the presence of the phase change material. Households with no redeeming change at 15-31 ℃ outside temperature showed room temperature of 19.5-30.5 ℃ with 5.5 ℃ difference at room temperature when the room temperature was 18-36 ℃.

Humidity was high when the humidity was outside the range of 65-70% when the room humidity was 68-76%, but when the humidity was 65-70%, the room humidity was 62-69%, which was about 7% .

Outside temperature of minus 5-11 ℃ Housing with no redeemable change, when room temperature is minus 3 ~ 9 ℃, the room temperature of the house containing the variable change material is 3-6 ℃, which is about 12-15 degrees difference.

Humidity is the same when the outside humidity is 35-45%, but when the humidity is 35-40%, the room humidity is 45-55%, which is about 10-15% Looked different

 Outside temperature is minus 5-11 ℃ House without changeable material has room temperature of 3-9 ℃ When the room temperature is below -9 ℃, the room temperature is 3-6 ℃ and the house temperature is about 15 ℃. As a result, the room temperature was 17 degrees and 26 degrees difference.

Outside temperature is minus 5-11 ℃ House without changeable changeable material, when room temperature is minus 3 ~ 9 ℃ Underground buried heat pipe of house with changeable material Air is circulated at 25 ℃ for 1 hour One result was that the room temperature rose to 27 ° C and the heating temperature remained at 22-25 ° C for 14 hours.

Outside temperature is minus 5-11 ℃ Redemption Housing in case of no change, when the room temperature is minus 3 ~ 9 ℃ Underground buried heat pipe of the house with redemption change material Air circulation at 28 ℃ using heating heat pump As a result of 1.5 hours, the room temperature rose up to 29 ℃ and remained at 23-26 ℃ for 18 hours.

Humidity was the same when the humidity was outside the range of 35-45% when the room humidity was 35-40% but the room humidity was 45-50% with the room humidity was about 10% The humidity of 55% to 60% of the houses which do not have the redemption change material was maintained for 55 hours, and the humidity of the houses which had the redemption change materials was 55 to 60% It took about 11 hours to maintain excellent humidity performance.

As shown in the above experimental results, it was confirmed that the heat storage material of this example was not influenced by the outside air temperature and the rise of the room temperature was suppressed even when the outside air became high temperature, so that the heat storage and heat insulating property and humidity retention were excellent .

&Lt; Example 7 >

The results of asphalt pavement, loess, and cement packing using the incombustible and heat-resistant heat accumulating balls and sintered heat storage material of the present invention were carried out in winter to prevent freezing.

In order to test the heat storage performance, the packaging area was 3m × 3m × 20cm thick. Weather conditions were carried out at an average temperature of minus 9.4-16.5 ℃, solar radiation of 3.56-11.45MJ / ㎡, and snowfall of 12.2-18.4cm. Heat storage material for anti-freezing manufactured by coating the sintering material filled with graphite and perlite with silica fire-resistant pipe Three storage material pipes 600-1, 600-2 and 600 of diameter 100 ∮, length 1.5 m and 2 m 3 m -3) was installed at the center of the pavement 2 m Pipe installed at 1.5 m 3 m inside the pipe 0.5 m from the edge of the pipe installation.

The heat storage material used herein was filled with 5 kg of a heat storage material having excellent thermal conductivity as a sintered heat storage material (80% by weight of paraffin outside the heat storage material, 70% by weight of graphite and 30% by weight of perlite). In addition, 3m-2m used paraffin C ₁₆ H ₃₄ phase change temperature 10-15 ℃, heat of 110-130KJ / kg product, 2-1m depth pipe used paraffin C ₁₄ H ₃₀ phase change temperature 3-6 ℃ and C ₁₆ H ₃₄ a phase change temperature of the heat of fusion is 10-15 ℃ 110-180KJ / kg was used as the mixed product, 1m- asphalt surface until paraffin C ₁₄ H ₃₀ phase change temperature is the heat of fusion 3- 6 ℃ 160-180KJ / g 38-43Kcal / kg.

4.4 kg of heat-resistant thermal storage balls were mixed with aggregate and silica sand and mixed with 4.6 kg of asphalt and 4.6 kg of heat-resistant storage balls, and then packed with heat storage material mixed asphalt (602) . The paraffin used was paraffin C ₁₄ H ₃₀ at a temperature of 3-6 ° C and a heat of 160-180 KJ / g 38-43 Kcal / kg.

In order to measure the temperature, a 3m depth point 630, a 2m depth point 630-1, a 1m depth point 630-2 surface 630-2 of the storage material filling pipe 600-3 having a length of 3 m as shown in FIG. 3), four temperature sensors were installed, and two temperature depths 620, 1m depth 620-1 and surface 620-2 of the 2m length heat storage material filling pipe 600-2 had three temperatures A sensor was installed and two temperature sensors were installed on a 1.5 m depth point 610 and 1.510 m depth of the storage material filling pipe 610-1 having a length of 1.5 m and three temperature sensors 610-2 ), 5 cm (610-3), and 10 cm lower point 10-4) were installed on the asphalt surface.

As a comparative example, the same road construction method was applied except for the asphalt and the heat storage material which were constructed as a storage material with a width of 3 mx 3 mx 20 cm thick.

Mixed with aggregate and silica sand, the existing asphalt foundation (701) was plastered to a height of 30 cm, and then asphalt (702) was packed thereon with 20 cm.

Pipe is epoxy-coated steel pipe Pipe thickness 4.5mm * 100∮ 1.5m, 2m 3m 3 pipes Pipe 2m length pipe in the center of the pavement, 1.5m inside the edge 0.5m and 3m pipe I installed it together.

As the foundation compaction, the mixture was mixed with aggregate and silica sand, and after 30 cm plaster, the asphalt was packed with 20 cm above it. In order to measure the temperature, four temperature sensors 730-1, 730-2, 730-2, 730-2, 730-2, 730-3, 730-2, 730-3, Three temperature sensors are installed on the 2m depth point 720, the 1m depth point 720-1 and the surface 720-2 of the 2m length pipe 700-2 and the 1m length pipe 700- 1, a temperature sensor 710 and a surface 710-1.

The weather conditions of January 10, 2013 are shown in Table 4, and the temperature of the asphalt pipe is shown in Table 5.

Average temperature -9.4 -16.5 -13.9 Snowfall cm 18.3 16.8 15 Solar irradiation MJ / 3.56 11.45 6.75 Ground temperature -3.8 -4.8 -5 Underground temperature 1m 6.7 7.1 6.3         1.5m 9.6 9.4 9          3m 15.5 15.7 15.1

Average
Temperatures
610-1
Point 620-2
Point 630-3
Point 610-2
Point
610-4
Point 710-1
Point 720-2
Point 730-3
Point 610
Point 620
Point 620-1
Point 630-2
Point 630-1
Point 630
Point -9.4 0.3
2.3 0.3
2.5 0.8
2.8 0.2
2.1
0.5
2.3 -9.3 -9.3 -9.3 10
11 11
13 9.3
11 7.7
9.5 10.6
11.5 15.8
16.2 -16.5 0.2
1.8 0.2
1.9 0.6
2 0.1
1.7
0.3
1.9 -One
6.5 -One
6.5 -One
6.5 9.4
10 11
12 8.1
9.2 8.1
9.4 11.3
12.3 16.8 -13.9 0.22 0.3
2.1 0.7
2.2 0.1
1.9
0.4
2.1 -One
3.9 -One
3.9 -One
3.9 9.6
10 11
12 8.8
9.1 7.3
9.2 10.8
11.9 16.3

As a result, it was possible to prevent freezing by using the accumulation material of 14.3cm at night, especially during the experiment from January 10, 2013. Especially, the asphalt using the heat storage material did not accumulate snow, At 14.3cm, the asphalt with the thermal storage material melted after 10 o'clock in the morning and the asphalt temperature did not froze to 0.5-1.8 ℃. Asphalt surface with 3 m pipe filled with thermal storage material showed continuous temperature above 1.8 ℃ on average and asphalt with heat storage material had the effect of preventing asphalt icing by storing solar radiation and underground heat even when ambient temperature was zero , General asphalt pavement was frozen and snowed in the existing asphalt pavement condition. As shown in Table 5, the thermal storage materials that stored the solar radiation and geothermal heat were kept at an average temperature of 1.7 ° C at 9.4-16.5 ° C outside temperature, which prevented freezing. Asphalt, foundation compaction and ground compressive strength were the same And there was no effect due to the storage material.

8 shows a pipe 801 filled with a heat storage material, which is another embodiment of the present invention. The center of the pipe 801 is connected to the heat exchange path 802 and filled with the heat storage material 803. As shown in FIG. 2, the heat circulation pipe connected from the pipe filled with the heat storage material may be combined with the heat storage block provided with the heat circulation pipe passage through which the heat circulation pipe passes, thereby maintaining the thermal insulation for agricultural use.

Because the root temperature of a plant grows well within 10-15 ℃, it can be seen that it can be used as a storage material using silica fires and loess. And the heat accumulating material ball is buried in the form of 10-100 cm underneath, and a heat circulating pipe filled with a heat accumulating material is filled in the heat accumulating material at the place where the heat accumulating material ball is buried to transmit the geothermal heat or maintain the temperature . A heat circulation pipe filled with a heat accumulating material means a pipe manufactured by charging a graphite heat accumulating material to the outside and making the inside heat circulating. Since this method does not affect the soil by using environmentally friendly silica fires, it is used for a year and the temperature of the soil is maintained at an average of 12 degrees a year, and the soil microorganism is increased to provide fertile soil , There was no PH change in soil, no heavy metals were detected, crop yield was increased by about 20% and energy savings were reduced by 30%

The heat storage material of the present invention may be used as it is, or may be filled in a pipe. However, it is also preferable to use the heat storage material composition as a mortar, board or brick.

Specifically, it can be suitably used as exterior materials such as civil engineering and building materials wall materials, ceiling materials, interior materials such as flooring materials, roofing materials, roofing materials of building roofing materials, and fireproof materials. Also, it can be applied to materials such as antifreezing agent for road structures, anti-icing agent, air conditioning system of buildings, and floor heating. Incidentally, the heat storage material of the present invention is appropriately selected depending on the application.

In order to maintain the proper temperature of the room, the reuse of the heat storage can make the environment where the temperature does not rise or fall to the optimum temperature 22-26 ° C or less, and the room can be kept at the optimum temperature for the change of the external temperature. can do.

In the case of a system for freezing and cooling / air-conditioning air conditioning, geothermal heat is used by using a heat storage material having a melting point of preferably 3 to 16 ° C.

The heat storage product of the present invention is not particularly limited, and it is advantageous to select a foamed particle according to the purpose of use, and to give a function to the use of the foamed particle.

100: Heat-resistant storage material
101: heat storage material pipe 102: heat circulation pipe
103: Air intake port 104: Heat storage heat sink
200: Heat storage block 201: Heat storage block top plate
202: heat storage block lower plate 203: heat circulation pipe passage
204: Heat storage block fixing means
301: heat exchanger 302: external air inlet
303: Air purifier 304: Hygrometer
305: external air inlet for temperature control 306: heat outlet
401: upper part 401: lower part
403: center axis
500: Heat storage material deck 501: Luminescent material
502: Non-slip stone 503: Heat circulation pipe fitting
600-1: 1.5m long accumulator filling pipe
600-2: 2m long accumulator filling pipe
600-3: 3m long accumulator filling pipe
601: Heat storage material mixed asphalt base
602: Regenerated asphalt mixture
610: 1.5 m deep storage point of the 1.5 m long storage tube
610-1: Surface of storage pipe of 1.5m length heat storage material
610-2: Asphalt surface 3 cm
610-3: Asphalt surface 5cm point
610-4: Asphalt surface 10cm point
620: 2 m deep storage point of 2 m long storage re-filling pipe
620-1: 1 m deep point of 2 m length of storage material filling pipe
620-2: The surface of the 2-meter-length heat storage fill pipe
630: 3m depth of accumulation refill pipe of 3m length
630-1: 2m deep point of 3m length heat storage fill pipe
630-2: 1m deep point of 3m length heat storage fill pipe
630-3: surface of 3m length heat storage fill pipe
700-1: pipe with a length of 1.5m
700-2: 2m long pipe
700-3: 3m long pipe
701: Asphalt foundation
702: Asphalt
710: 1.5 m deep point of 1.5 m long pipe
710-1: Surface of pipe of 1.5m length
720: 2m deep point of 2m long pipe
720-1: 1 m deep point of 2 m long pipe
720-2: Surface of pipe of 2m length
730: 3m deep point of 3m long pipe
730-1: 2m deep point of 3m long pipe
730-2: 1m deep point of 3m long pipe
730-3: Surface of 3m long pipe
801: Heat storage material filling pipe 802: Heat exchange furnace
803: Heat storage material

Claims (10)

Wherein the paraffinic phase change material (PCM) is filled in the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, A heat-resistant storage material coated with at least one coating material selected from the group consisting of silica, alumina, cement, silica, gypsum, or loess;
And a cylindrical outer housing surrounding the heat-resistant heat storage material coated with the coating material. Filling a pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite with paraffinic phase change material (PCM);
Coating the outer surface of the porous particle filled with the paraffinic phase change material (PCM) with at least one coating material selected from the group consisting of silica, silica, cement, silica, gypsum or loess;
And filling the heat-resistant heat storage material in a pipe having a cylindrical outer housing. The method of manufacturing a heat storage material pipe according to claim 1, Filling a pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite with paraffinic phase change material (PCM);
Coating the outer surface of the porous particle filled with the paraffinic phase change material (PCM) with at least one coating material selected from the group consisting of silica, silica, cement, silica, gypsum or loess;
A step of preparing a heat storage material pipe filled with a heat-resistant heat storage material by filling the heat-resistant heat storage material into a pipe having a cylindrical outer housing;
And burying the heat storage material pipe filled with the heat-resistant heat storage material in a lower portion of an asphalt, cement, or loamy soil, a parking lot, or a trail. Filling a pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite with paraffinic phase change material (PCM);
Coating the outer surface of the porous particle filled with the paraffinic phase change material (PCM) with at least one coating material selected from the group consisting of silica, silica, cement, silica, gypsum or loess;
A step of preparing a heat storage material pipe filled with a heat-resistant heat storage material by filling the heat-resistant heat storage material into a pipe having a cylindrical outer housing;
And installing a heat storage material pipe filled with the heat-resistant heat storage material in a lower portion of the plastic house. Wherein the paraffinic phase change material (PCM) is filled in the pore of at least one porous particle selected from the group consisting of zeolite, perlite or graphite, A heat storage material pipe filled with a heat-resistant heat storage material coated with at least one coating material selected from the group consisting of silica, alumina, cement, silica, gypsum or loess;
A heat circulation pipe capable of transferring heat from the heat storage material pipe; And
And a heat pump connected to the heat circulation pipe, wherein the heat pump is connected to the heat circulation pipe. The method of claim 5,
Wherein the heat storage material pipe is buried in a building or soil underground and can use geothermal heat of 3 to 20 占 폚. The method of claim 5,
Wherein a part of the heat circulation pipe is located inside the heat storage material pipe and a part of the heat storage pipe extends to the outside. The method of claim 5,
And a part of the heat circulation pipe passes through a heat circulation pipe passage between the heat storage blocks. The method of claim 5,
Wherein the heat pump is capable of supplying air by heating or cooling. The method of claim 8,
Wherein the heat storage block is installed on a floor of a building.

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