Volume 43, Issue 6 pp. 1167-1175
Research Article

Highly Accurate Prediction Method for Thermophysical Properties of Cryogenic Phase Change Materials

Jinwen Zhang

Jinwen Zhang

South China University of Technology, Key Lab of Heat Transfer Enhancement and Energy Conservation of the Ministry of Education, 381 Wushan Road, 510640 Guangzhou, China

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Yajun Li

Corresponding Author

Yajun Li

South China University of Technology, Key Lab of Heat Transfer Enhancement and Energy Conservation of the Ministry of Education, 381 Wushan Road, 510640 Guangzhou, China

Correspondence: Yajun Li ([email protected]), South China University of Technology, Key Lab of Heat Transfer Enhancement and Energy Conservation of the Ministry of Education, 381 Wushan Road, 510640 Guangzhou, China.Search for more papers by this author
First published: 17 February 2020
Citations: 1

Abstract

Considering the limitations of experimental studies on thermophysical properties of cryogenic phase change materials (PCMs), a highly accurate approach to predict the solid-liquid equilibrium (SLE) of PCMs is proposed, in which the method of referenced state by a hypothetic path is used in the fugacity of PCMs in the solid phase and the Soave-Redlich-Kwong (SRK)-UNIFAC model is applied in the liquid phase. Based on this method, the thermophysical properties of cryogenic composite PCMs including eutectic composition, eutectic temperature, and eutectic enthalpy are predicted with a minor deviation. Taking the liquid natural gas (LNG) air separation unit as an example, the established simulating method with high accuracy to predict the thermophysical properties of the PCMs is adopted for material selection and design for a cold storage unit in this project with high efficiency.

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