| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat accumulating material for cooling air, solidifying with suprecooling by several times and smoothly repeating phase changes by using tetrabutylnitric acid ammonium hydrate of which melting point and heat of melting is good for the heat accumulating material for cooling air. SOLUTION: This heat accumulating material is obtained by using tetrabutytlnitric acid ammonium hydrate or a mixed hydrate containing the above compound as a main component and an added small amoiuunt of tetraalkylammonium salt, as main agents for heat accumulation of the heat accumulating material, and also using a very small amount (<=0.1wt.%) of tetraalkylammonium salt hydrate having >=20 deg.C melting point and capable of suppressing the supercooling of the main heat accumulating agents. |
