期刊
CANADIAN JOURNAL OF CHEMISTRY
卷 96, 期 7, 页码 722-729出版社
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.1139/cjc-2017-0578
关键词
thermodynamics; energy storage; phase change materials
资金
- NSERC (Discovery grant)
- NSERC (NSERC CGS)
- NSERC (NSERC CREATE DREAMS post-doctoral fellowship)
- Canada Foundation for Innovation
- Atlantic Innovation Fund
Phase change materials (PCMs) offer a promising technology for thermal energy storage, load leveling, and peak shifting applications. A desirable PCM has a melting temperature within the temperature boundaries of its application and a high change in enthalpy on melting. Knowledge of the relationships between these thermodynamic properties and molecular structure would advance informed selection of PCM candidates for a given application. In the present investigation, the relationship between structure (length of alkyl chains) and melting properties has been investigated for isomeric esters, showing that esters containing longer individual alkyl chains have higher melting temperatures and higher enthalpy changes on melting. The inciting entropy changes, however, are relatively independent of the alkyl chain distribution.
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