| 摘要 |
PURPOSE:To provide a thermal energy storage material which allows thermal energy storage cycle to be operated stably over a long period of time and provides a relatively low-temperature heat source, by blending a dicarboxylic acid anhydride, an alcohol and a dicarboxilic acid monoester derived from said anhydride and said alcohol. CONSTITUTION:A thermal energy storage liquid compsn. contains a dicarboxylic acid anhydride, an alcohol and a dicarboxylic acid monoester derived form said anhydride and said alcohol. Particularly preferred dicarboxylic acid anhydrides are cyclohexane-dicarboxylic [2,3] anhydride, phthalic anhydride and anhydrides of their derivatives. The alcohols having a b.p. of 50-300 deg.C are preferred when easiness in the separation thereof by evaporation is taken into consideration. The thermal energy storage compsn. can be employed in chemical thermal energy storage by utilizing a method of separating at least part of the alcohol by said separating operation, while externally supplying heat. |
