| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition, which has no lowering in amount of latent heat of fusion, by comprising a hydrated salt-type heat storage material, a supercooling inhibitor, a thickener, water, a heat transfer promoter, and a water evaporation inhibitor. SOLUTION: This composition comprises 100 pts.wt. of a hydrated salt-type heat storage material such as sodium acetate trihydrate salt or the like, 1 to 5 pts.wt. of a supercooling inhibitor such as lithium fluoride or the like, 1 to 6 pts.wt. of a thickener, 1 to 10 pts.wt. of a heat transfer promoter selected from silicon carbide, boron oxide, carbon or the like, and 1 to 6 pts.wt. of water, or 1 to 5 pts.wt. of a water evaporation inhibitor such as liquid paraffin. In the composition, the crystal state of the hydrate-type heat storing material is maintained, so that the composition has no lowering in amount of latent heat of fusion. As the thickener, there are used combinations of polyvinyl alcohol, polyethylene glycol, gelatin, polymethyl cellulose sodium and sodium alginate. A heat storage container has the heat storage composition sealed in a metallic container, and heat transfer portions projecting toward the inside of the composition are provided to increase a heat transfer area thereby enhancing thermal conductivity. |
