Abstract
Efficient design of high-performance phase change material (PCM) composites remains challenging, due to a lack of understanding regarding the relationships between the performance characteristics, and relevant design parameters. In this work, we adopt the effective composite approximation, as justified through experimental validation, and numerically investigate the effects of individual design variables on the thermal energy storage rate into phase change material composites under a constant temperature boundary condition. We isolate and describe the impact of (1) geometry, (2) volume fraction of metal, (3) time, (4) material thermophysical properties, and (5) the magnitude of the thermal boundary condition on the heat absorption rate normalized by heated area, by volume, and by mass of the active composite PCM. Finally, we assess the accuracy of the quasi-steady state approximation, as well as a modified version of the quasi-steady state approximation, which incorporates a term for sensible heating. These results are used to illustrate key relationships and trends which affect the volume fraction of metal in a composite PCM which maximizes the thermal energy storage rate across different performance metrics.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
