JP3154385U - Heating / cooling structure of house with new heat storage agent storage structure - Google Patents

Abstract

The present invention provides a cooling / heating structure that improves heat storage efficiency, prevents damage to a storage bag of a heat storage agent, and improves workability on site. [MEANS FOR SOLVING PROBLEMS] A plurality of easily deformable bags in which a latent heat storage agent of 100 KJ or more per kg is suspended in a water-based gel-like sensible heat storage agent and sealed are installed on a heat insulating material fixed under the floor. The side is brought into contact with a pipe connected to a heat source for air conditioning. [Selection] Figure 3

Description

The present invention relates to a bag containing a heat storage agent that has high heat storage efficiency and is easy to construct, and a cooling / heating structure for a house using the bag.

Research on heat storage technology has been conducted since around 1985, and a patent on a human back and foot heating device having a structure in which a latent heat storage agent is sealed in a container having rubber elasticity such as natural rubber or butyl rubber has been published (patent document) 1). Patent Document 2 discloses a technology for a heating mat that is manufactured by coating a superabsorbent sheet impregnated with water on a heat medium tube. Furthermore, a heat storage device in which an elastic body such as a plate shape, a pipe shape, or a honeycomb shape is filled with a high water content gel is disclosed (Patent Document 3). These common points are intended to prevent the thermal storage agent container from being destroyed by impact during transportation, use or construction.

In addition to these, there is an application relating to a technique for forming a space under a floor panel and filling the space with a viscoelastic or elastic heat storage material. For example, a heating element is laid and the heat storage agent is filled in a jelly form in the same space (Patent Document 4). In addition, there is a technique in which a heat medium pipe is buried directly in a concrete layer to give the concrete a heat storage function (Patent Document 5). In these cases, it is necessary to take measures against waterproofing so as not to leak water.

After that, various improvements such as a heat storage heating device (Patent Document 6) that can further control the temperature range and a metal thin film layer for heat diffusion on the heat storage agent have been added (patents) Reference 7). Moreover, the mechanism which can control the heat | fever release and the device which suppresses the damage of the bag body when it packs and constructs a thermal storage agent are developed. (Patent Document 8).

JP 61-186790 A JP 62-162824 JP-A 63-189790 JP 02-97829 A JP 05-26464 A JP 06-34148 JP 2002-81665 A JP 2000-130778 A

Looking at the technology so far, heat storage technology such as concrete, aqueous solution, gel, etc. is the center, and the heat storage amount is several tens of kJ per kg. Thermal storage agents are used in complex shapes, causing damage. Therefore, there is still room to improve the amount of heat storage, and at the same time, there are problems to be solved in improving workability and filling structure of the heat storage agent. That is, the problems to be solved by the present invention are 1) improvement of heat storage efficiency by combined use of sensible heat storage agent and latent heat storage agent, 2) prevention of damage to storage bag of heat storage agent, 3) improvement of workability in field work, etc. .

In order to improve the heat storage efficiency, a sodium sulfate hydrate having a heat storage amount of 155 kJ per kg or a mixture of an aqueous gel formed of 150 kJ n-paraffin, water of a heat storage amount of 42 kJ and a crosslinked polymer per kg is used. use. The latent heat storage agent is selected according to the adopted temperature of the usage surface such as the floor surface, the wall surface, and the ceiling surface. In the case of n-paraffin, the number of carbon atoms is selected and mixed into the gel heat storage medium as an O / W emulsion or as a capsule. For example, the solidification temperature of n-paraffin having 12 carbon atoms is 30 ° C., and its latent heat of fusion is 225 kJ / kg. The solidification temperature can be changed depending on the carbon number of the paraffin employed. The heat storage body is raised above the solidification temperature to change the paraffin into a liquid to store heat, and when the temperature of the heat storage agent decreases, heat is generated as latent heat by solidification.

Regarding the damage to the storage bag for the heat storage agent, it has been used so far as hard plastic or the like is molded into a fixed shape and placed between the joists. Had occurred. In the present invention, a bag that is easily deformable and has a structure that absorbs energy by deformation of the bag with respect to impact during transportation or construction to prevent breakage. Furthermore, in order to improve the transportability, reduce the risk of water leakage, stop the water injection at the site, and adopt the unit construction method of the manufactured heat storage bag.

As an effect of the present invention, paraffin spheres or capsules float in an aqueous solution gel, and a highly deformable unit having a high heat storage effect can be provided. When pentadecane having 15 carbon atoms or heptadecane having 17 carbon atoms is used, a cooling structure is obtained. When eicosane having 20 carbon atoms is used as a main component, the heating temperature can be maintained at a constant temperature of 38 ° C. because there is a freezing point at 38 ° C. The floor surface can be used as a cooling surface during heating, and the ceiling or wall surface can be used as a cooling surface during cooling in summer.

When creating a cross-linked polymer gel to be prepared as an aqueous solution, hydrated sodium thiosulfate or sodium acetate, which is an inorganic substance, is dissolved and used, and a latent heat storage agent and a sensible heat storage agent using a freezing point of about 40 ° C It is also possible to improve the heat storage efficiency by the combined use. When the combined use of the latent heat storage agent and the sensible heat storage agent is employed as described above, various heat storage units can be prepared by selecting from an organic material and an inorganic material. If these are stored in an easily deformable bag made by laminating thin PET and aluminum, the unit becomes extremely easy to work.

The best mode for carrying out the invention will be described with reference to the drawings. FIG. 1 is a schematic view of a heat storage agent storage space unit of the present invention having high heat storage efficiency. The bottom 1 of the space is an underfloor heat insulating material applied to the entire room and is fixed. The periphery is surrounded by joists 2. As shown in FIG. 1, a hot water circulation pipe 3 for hot water circulation is installed on a heat insulating material 1, and a space for storing a heat storage agent bag is formed thereon, and the heat storage agent bag 4 of FIG. 2 is stored in this space. To do. Since the heat storage agent bag is packed in a narrow space, it is assumed to be easily deformed by a triple bag laminated with thin PET and aluminum.

FIG. 3 is an example of a state in which the heat storage agent bag is packed in the space of FIG. After the heat storage agent bag is packed, the floor panel 6 is used to cover the heat storage agent bag. As shown in FIG. 5, the bags are in contact with each other and between the heat insulating material 1 or the hot water pipe 3 and the bag, so that heat is easily transmitted. The hot water pipe 3 may be wrapped in a heat storage agent bag. Heat conduction is better when there is no gap. The best form is a structure in which a polymer water-soluble gel 7 is packed in the bag of the heat storage agent and the latent heat storage agent 8 is suspended and dispersed therein. Raise the hot water temperature in the pipe above the melting point of the latent heat storage agent, store the heat in a state where the latent heat storage agent is melted, and when the temperature decreases, solidification starts near the melting point of the latent heat storage agent and the heat of melting begins to be released. Keep the sensible heat storage agent at that temperature. If the same structure as FIG. 3 is realized by a ceiling or a wall surface, a ceiling cooling structure or a wall surface heating structure can be realized.

The structure of the embodiment of the present invention will be described with reference to FIG. 3, but the material to be adopted is appropriately changed depending on the place where the floor, the wall surface, the ceiling and the like are used and the use temperature. 1 underfloor heat insulating material of 30 mm or more was used, and a joist 2 having a height of 45 mm to 60 mm was arranged to form a space for storing a heat storage agent bag. The unit of the space area was 16 squares per 3.3 square meters. 2 In the heat storage agent bag 4, an aqueous solution gel in which a large amount of water was absorbed by filling a small amount of starch with a cross-linked acrylic acid and then using sodium polyacrylate was packed. This sensible heat storage agent 7 was mixed with 20% of 2 mm size pellets of 20 carbon atoms of Eicosan of the latent heat storage agent 8 to obtain a heat storage agent bag of about 5 kg. The bag for storing the gel was an easily deformable bag by sandwiching an aluminum sheet between two polyethylene resins. This was stored in a space formed by cedar boards and pine joists, wrapped around the hot water pipe 3, and a floor panel 6 was constructed on the presser foot from above to obtain a floor having a cross-sectional structure shown in FIG.

The hot water pipe 3 is continuously piped seamlessly. In the case of a heating structure, the hot water pipe 3 is connected to an auxiliary heater, and its heat is stored in the gel and the latent heat storage agent. As simple floor heating, it was effective for 24 hours.

Schematic diagram of the space for storing the heat storage agent bag surrounded by underfloor insulation and joists under the floor panel Schematic diagram of one form of an easily deformable heat storage agent bag Cross-sectional schematic diagram of the air-conditioning structure on the floor surface 1 Underfloor insulation 2 Floor panel and warm water pipe connected to the joist 3 heat source that supports the underfloor insulation 4 Heat storage bag 5 made of laminate of PET and aluminum Compressed and deformed in the space Thermal storage agent bag 6 in close contact with the floor and pipes Gel sensible heat storage agent 8 in floor panel 7 bag Latent heat storage agent 9 joist dispersed in sensible heat storage agent

Claims (2)

There is an aqueous gel-like sensible heat storage agent in an easily deformable bag, and a plurality of bags sealed with floating latent heat storage agent of 100 kilojoule or more per kilogram in the gel are fixed under the floor. Heating / cooling structure on the floor, wall, and ceiling of the house, installed on top of the insulation and in contact with the pipe connected to the heat source for air conditioning 2. The cooling / heating structure according to claim 1, wherein the heat exchanger for heating is connected to a seamless heat exchange pipe.