TY - GEN
T1 - Numerical Simulation of Enhancing the Solar-Thermal Conversion and Storage Performance for Expanded Perlite/Paraffin Wax Composites by Introducing Expanded Graphite and Carbon Nanotubes
AU - Zhao, Xinbo
AU - Qu, Zhi Guo
N1 - Publisher Copyright:
© 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2024
Y1 - 2024
N2 - In this study, the expanded perlite (EP) powder and expanded graphite (EG) were used as supports to stabilize paraffin wax (PW) for preparing composite phase change materials (PCMs). The impregnation method was used to prepared PW/EP, PW/EP/EG1, PW/EP/EG3 and PW/EP/EG5. The enhancement effect of EG with different mass proportions on the heat storage/release performance of PW/EP, and the improvement effect of carbon nanotubes (CNTs) on the solar-thermal conversion performance of pure PW and composite PCMs were studied by three-dimensional numerical simulation. The thermal conductivities of composite phase change materials were 1.26–2.13 times higher than the pure PW. The PW/EP/EG5 had wonderful thermal physical property in heat energy storage and release process. The solar-thermal conversion performance could be effective improved by adding CNTs cover; Compared to C-PW, the phase change time of C-PW/EP, C-PW/EP/EG1, C-PW/EP/EG3 and C-PW/EP/EG5 decreased by 4%, 19%, 26% and 31%, respectively; the performance of PW/EP was improved the most and that PW/EP/EG5 was improved the least; but C-PW/EP/EG5 had the best solar-thermal conversion and storage performance.
AB - In this study, the expanded perlite (EP) powder and expanded graphite (EG) were used as supports to stabilize paraffin wax (PW) for preparing composite phase change materials (PCMs). The impregnation method was used to prepared PW/EP, PW/EP/EG1, PW/EP/EG3 and PW/EP/EG5. The enhancement effect of EG with different mass proportions on the heat storage/release performance of PW/EP, and the improvement effect of carbon nanotubes (CNTs) on the solar-thermal conversion performance of pure PW and composite PCMs were studied by three-dimensional numerical simulation. The thermal conductivities of composite phase change materials were 1.26–2.13 times higher than the pure PW. The PW/EP/EG5 had wonderful thermal physical property in heat energy storage and release process. The solar-thermal conversion performance could be effective improved by adding CNTs cover; Compared to C-PW, the phase change time of C-PW/EP, C-PW/EP/EG1, C-PW/EP/EG3 and C-PW/EP/EG5 decreased by 4%, 19%, 26% and 31%, respectively; the performance of PW/EP was improved the most and that PW/EP/EG5 was improved the least; but C-PW/EP/EG5 had the best solar-thermal conversion and storage performance.
KW - Carbon nanotubes
KW - Expanded graphite
KW - Expanded perlite
KW - Phase change materials
KW - Solar-thermal conversion
UR - https://www.scopus.com/pages/publications/85180626204
U2 - 10.1007/978-3-031-42987-3_9
DO - 10.1007/978-3-031-42987-3_9
M3 - 会议稿件
AN - SCOPUS:85180626204
SN - 9783031429866
T3 - Mechanisms and Machine Science
SP - 133
EP - 154
BT - Computational and Experimental Simulations in Engineering - Proceedings of ICCES 2023—Volume 2
A2 - Li, Shaofan
PB - Springer Science and Business Media B.V.
T2 - 29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023
Y2 - 26 May 2023 through 29 May 2023
ER -