NUMERICAL ANALYSIS AND EXPERIMENTAL RESEARCH OF PHASE CHANGE HEAT STORAGE BASED ON BIONICS

Zhang Lin; Chen Xiuqin

doi:10.19912/j.0254-0096.tynxb.2023-2009

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 1-10. DOI: 10.19912/j.0254-0096.tynxb.2023-2009

NUMERICAL ANALYSIS AND EXPERIMENTAL RESEARCH OF PHASE CHANGE HEAT STORAGE BASED ON BIONICS

Zhang Lin, Chen Xiuqin

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Abstract

Phase change heat storage technology is one of the efficient means of heat storage in engineering applications. However, phase change materials have the problem of low thermal conductivity, which seriously limits their work efficiency. Therefore, it is necessary to optimize the structure of phase change heat storage devices to improve heat storage efficiency. Na₂S₂O₃·5H₂O and CH₃COONa·3H₂O were selected as phase change materials. Six phase change heat storage models were designed based on bionic structure. The melting and solidification processes of the two phase change materials in the six heat storage models were simulated and analyzed. Finally, based on the numerical simulation results and taking into account the heat storage and release processes, a small biomimetic cross seasonal phase change heat storage experimental platform was built. This article presents temperature changes of two phase change materials at each temperature measuring point in two models under the operating conditions of 75 ℃ and 0.1 m³/h. The results indicate that one heat storage model is more suitable for using Na₂S₂O₃·5H₂O as phase change material, while the other model is more suitable for using CH₃COONa·3H₂O as phase change material.

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solar energy / heat storage / phase change heat storage / biomimetic / numerical analysis / experimental study

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Zhang Lin, Chen Xiuqin. NUMERICAL ANALYSIS AND EXPERIMENTAL RESEARCH OF PHASE CHANGE HEAT STORAGE BASED ON BIONICS[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 1-10 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2009

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