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Energies 2017, 10(7), 902; https://doi.org/10.3390/en10070902

Numerical and Experimental Studies on the Heat Transfer Performance of Copper Foam Filled with Paraffin

School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
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Received: 21 March 2017 / Revised: 12 June 2017 / Accepted: 26 June 2017 / Published: 2 July 2017
(This article belongs to the Section Energy Storage and Application)
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Abstract

Abstract: The pore-scale numerical works on the effective thermal conductivity and melting process of copper foam filled with paraffin, and a phase-change material (PCM) with low thermal conductivity, were conducted by utilizing the two-dimensional (2D) hexahedron Calmidi-Mahajan (C-M) model and the three-dimensional (3D) dodecahedron Boomsma-Poulikakos (B-P) model. The unidirectional heat transfer experiment was established to investigate the effective thermal conductivity of the composite. The simulation results of the effective thermal conductivity of the composite in 2D C-M model were 6.93, 5.41, 4.22 and 2.75 W/(m·K), for porosity of 93%, 95%, 96% and 98% respectively, while the effective thermal conductivity of the composite in 3D B-P model were 7.07, 5.24, 3.07 and 1.22 W/(m·K). The simulated results were in agreement with the experimental data obtained for the composite. It was found that the copper foam can effectively enhance the thermal conductivity of the paraffin, i.e., the smaller the porosity of copper foam, the higher the effective thermal conductivity of the composite. In addition, the Fluent Solidification/Melting model was applied to numerically investigate the melting process of the paraffin in the pore. Lastly, the solid–liquid interface development, completely melted time and temperature field distribution of paraffin in the pore of copper foam were also discussed. View Full-Text
Keywords: phase-change material (PCM); copper foam; effective thermal conductivity; melting process phase-change material (PCM); copper foam; effective thermal conductivity; melting process
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Zheng, H.; Wang, C. Numerical and Experimental Studies on the Heat Transfer Performance of Copper Foam Filled with Paraffin. Energies 2017, 10, 902.

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