Highly Accurate Prediction Method for Thermophysical Properties of Cryogenic Phase Change Materials. Issue 6 (12th March 2020)

• Record Type: Journal Article
• Authors: Zhang, Jinwen; Li, Yajun
• Other Names: Flood Adrian guestEditor.
• Is Part Of: Chemical engineering & technology. Volume 43:Issue 6(2020)
• Page Start: 1167
• Page End: 1175
• Publication Date: 2020-03-12
• Subjects: Cryogenic energy storage -- Liquefied natural gas -- Phase change materials -- Thermodynamics -- Thermophysical properties; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201900167
• Languages: English
• ISSNs: 0930-7516

Abstract

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. Abstract : In view of the limitations of experimental studies on thermophysical properties of cryogenic phase change materials, a highly accurate approach to predict these properties was developed. The method was adopted for material selection and design for a cold storage unit with high efficiency, providing a theoretical reference for selecting such materials for liquid natural gas cold storage engineering.