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太阳能及废热等低温热能的储存是能源研究的重要领域之一。经调查和分析,我们认为,某些多元醇及其它物质也基本能满足低温储能的特性。此类物质已有一些零星的DSC研究结果,但系统的绝热量热学研究,特别是其混合物的热力学研究尚未见报道。作为多元醇及其混合物的绝热量热学研究的一部分,本文将报道2,2-二甲基-1,3-丙二醇在270～440K间的热力学性质和相变。
The storage of low-temperature thermal energy such as solar energy and waste heat is one of the important areas of energy research. After investigation and analysis, we believe that some polyols and other substances are basically able to meet the characteristics of low-temperature energy storage. There have been some sporadic DSC studies of such materials, but systematic adiabatic calorimetry studies, especially the thermodynamic studies of their mixtures, have not been reported. As part of the adiabatic calorimetry study of polyols and their mixtures, this paper reports the thermodynamic properties and phase transitions of 2,2-dimethyl-1,3-propanediol between 270 and 440K.