Experimental Study of the Behavior of Phase Change Materials during Interrupted Phase Change Processes

Rohit Jogineedi, Kaushik Biswas and Som Shrestha
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Rohit Jogineedi: School of Mechanical Aerospace and Materials Engineering, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
Kaushik Biswas: Gas Technology Institute, 123 C Street, Davis, CA 95616, USA
Som Shrestha: Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA

Energies, 2021, vol. 14, issue 23, 1-13

Abstract: This research article explores the behavior of a phase change material (PCM) when it undergoes interrupted melting and freezing, through experimental investigations using a heat flow meter apparatus. A fatty acid-based organic PCM, encapsulated within polyethylene and thin aluminum foil layers, was experimentally tested in this study. Experiments were designed to represent multiple interrupted phase change scenarios that could occur within PCMs applied in buildings. The experimental results were analyzed and compared with previously reported assumptions in numerical models dealing with PCM hysteresis and interrupted phase change processes. These comparisons indicated that the assumptions used in the different numerical models considered can capture the interrupted phase change phenomena with varying degrees of accuracy. The findings also highlighted the need for additional experimental research on different phase change processes that can occur in building applications of PCMs.

Keywords: phase change material; hysteresis; interrupted phase change; heat flow meter apparatus; numerical models (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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