Thermophysical Features of Melting and Crystallization of Organic Heat-Accumulating Materials
N. V. Shchebetovskaya, Ye. A. Pokyntelytsia, O. V. Aleksandrova
Donbas National Academy of Construction and Architecture
Abstract: In this paper, based on the analysis of recent studies and publications, the basic principles of the development of heat-storage materials based on phase transition processes are outlined in a brief form. Information on the thermophysical characteristics of various low-molecular organic compounds and their mixtures, which are best suited for heat-accumulating materials, is given. For the successful use of organic substances in heat accumulators, in-depth systematic studies of their thermophysical characteristics and features of phase transformations of the melting-crystallization type have been carried out. A summary table has been compiled for the decreasing degree of usefulness of heat storage materials. A one-way analysis of variance was applied to determine the most promising substance for efficient and rational use of a heat accumulator to maintain a normal room temperature. With the help of the application package «Exсel» the factor that has the smallest variance of measurement errors was selected. As a result, the most suitable organic compound was dibenzyl. For the selected heat-accumulating material, the dependence of the degree of utility on physical properties has been established.
Keywords: heat storage materials, phase transitions, melting, crystallization, one-way analysis of variance, thermal analysis, overcooling.
Pages: 114-119.
Link for citation: Shchebetovskaya, N. V.; Pokyntelytsia, Ye. A.; Aleksandrova, O. V. Thermophysical Features of Melting and Crystallization of Organic Heat-Accumulating Materials. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2021. – Issue 2021-1(147) Modern building materials. – Р. 114-119. – URL: https://donnasa.ru/publish_house/journals/vestnik/2021/2021-1(147)/st_15_shebetovskaya_pokyntelitsya_aleksandrova.pdf (date of access: 15.10.2024). (in Russian)
Issue 2021-1 (147)Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture