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Numerical simulation of the heat storage performance of aluminum/paraffin composite phase change materials
Vol 5, Issue 1, 2022
VIEWS - 330 (Abstract) 169 (pdf)
Abstract
Phase change energy storage materials are widely used in the fields of battery thermal management and solar power generation due to their characteristics of storing and releasing energy periodically. However, their further applications are limited by their low thermal conductivity. The addition of high thermal conductivity foams provides an effective method to address this shortcoming. A three-periodic minimal surface (TPMS) was used to generate an aluminum foam skeleton, and the variation of phase change heat storage of the aluminum/paraffin composite phase change material was numerically simulated based on the pore scale. The results showed that the addition of aluminum skeleton enhanced the heat storage and shortened the melting time, and the melting time of the composite phase change material was shortened by 68%, 75% and 80% when compared with pure paraffin wax at the porosity of 0.90, 0.85 and 0.80, respectively, and the temperature field was more uniform during the heat storage process, The thermal non-equilibrium effect between the aluminum skeleton and the paraffin wax is verified, and the lower the porosity of the aluminum/paraffin composite phase change material, the more obvious this effect is.
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DOI: https://doi.org/10.24294/tse.v5i1.1526
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