Heat storage system and installation method of latent heat storage material thereof

Abstract

There is provided a heat storage system including: an indoor space; a heat storage space which is adjacent to the indoor space and in which a latent heat storage material having a melting point or a freezing point in a range of 5° C. or higher and 30° C. or lower is installed; and a natural ventilator controlling introduction and blocking of outside air to the heat storage space, in which a heat resistance between the heat storage space and the outside air is set to be greater than a heat resistance between the heat storage space and the indoor space.

What is claimed is: 
     
         1 . A heat storage system comprising:
 an indoor space;   a heat storage space which is adjacent to the indoor space and in which a latent heat storage material having a melting point or a freezing point in a range of 5° C. or higher and 30° C. or lower is installed; and   a control unit for controlling introduction and blocking of outside air to the heat storage space, wherein   a heat resistance between the heat storage space and the outside air is set to be greater than a heat resistance between the heat storage space and the indoor space.   
     
     
         2 . The heat storage system according to  claim 1 , further comprising:
 a plurality of trays installed in the heat storage space, wherein   a container storing the latent heat storage material is placed on each of the plurality of trays.   
     
     
         3 . The heat storage system according to  claim 2 , wherein
 the container is a bag-shaped container made of a film.   
     
     
         4 . The heat storage system according to  claim 3 , further comprising:
 a heat sink placed on the bag-shaped container.   
     
     
         5 . The heat storage system according to  claim 2 , wherein
 the indoor space and the heat storage space are partitioned by a plurality of floor plates supported at four corners by a plurality of pedestals arranged at regular intervals in a longitudinal direction and a lateral direction in a plan view, and   each of the plurality of trays has a dimension that is substantially the same as the floor plate and has notches to avoid the pedestals, formed at four corners, or has a dimension, that is a size of two or more integer multiples of the floor plate, in the longitudinal direction and the lateral direction and has a plurality of notches to avoid the pedestals, and a hole part through which the pedestal penetrates.   
     
     
         6 . The heat storage system according to  claim 2 , wherein
 the heat storage space is located immediately above a floor slab, and provided with the latent heat storage material having a heat storage capacity of 1 kWh or more or a weight of 20 kg or more, per square meter of floor area.   
     
     
         7 . The heat storage system according to  claim 6 , wherein
 the plurality of trays have an adiabatic layer between the latent heat storage material stored in the container and the floor slab to insulate both the latent heat storage material and the floor slab from each other.   
     
     
         8 . The heat storage system according to  claim 2 , wherein
 the plurality of trays have a sensor for detecting a breakage of the container.   
     
     
         9 . The heat storage system according to  claim 1 , wherein
 the heat storage space is adjacent to the indoor space via a partition material which is a ceiling material or a floor material of the indoor space, and   a through hole is formed in the partition material.   
     
     
         10 . An installation method of a latent heat storage material in a heat storage system including an indoor space on a specific floor among a plurality of floors, a heat storage space which is adjacent to the indoor space and in which a latent heat storage material having a melting point or a freezing point in a range of 5° C. or higher and 30° C. or lower is installed, and a control unit for controlling introduction and blocking of outside air to the heat storage space, in which a heat resistance between the heat storage space and the outside air is set to be greater than a heat resistance between the heat storage space and the indoor space, the method comprising:
 a first step of preparing a pillow packing material or a bag-shaped container made of a foldable film in the specific floor; 
 a second step of transporting the latent heat storage material with a temperature 10° C. or higher than the melting point to the specific floor by pumping using a pump or by lifting a tank storing the latent heat storage material; 
 a third step of, when the pillow packaging material is prepared in the first step, filling the bag-shaped container formed by heat-sealing the pillow packaging material with the latent heat storage material transported in the second step at the specific floor and sealing the bag-shaped container, and when the bag-shaped container made of foldable film is prepared in the first step, filling the bag-shaped container with the latent heat storage material transported in the second step at the specific floor and sealing the bag-shaped container; and 
 a fourth step of installing the bag-shaped container in which the latent heat storage material is enclosed in the third step to the heat storage space adjacent to the indoor space in the specific floor.