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Chinese Journal of Space Science ›› 2018, Vol. 38 ›› Issue (3): 409-417.doi: 10.11728/cjss2018.03.409

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Thermal Design and Simulation of a Space Phase Change Heat Exchanger

MA Caixin1,2, SHENG Qiang1, TONG Tiefeng1   

  1. 1 Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094;
    2 University of Chinese Academy of Sciences, School of Computer and Control Engineering, Beijing 100049
  • Received:2017-06-19 Revised:2017-12-26 Online:2018-05-15 Published:2018-05-12

Abstract:

Phase Change Material (PCM) is widely used in energy storage due to its huge latent heat. To overcome its drawback of poor thermal conductivity, a Phase Change Heat Exchangers (PCHE) which combine the advantage of heat exchanger and PCM is designed. It can be used cooling high density of heat flow rate surface in aero-space. Based on the phase change computing methods-Enthalpy method for solidification and melting model, the numerical simulation of a kind of plate PCHE, which used water and paraffin as cooling medium and phase-change material, is studied. The transient temperature distribution, solid-liquid phase interface changes and melting time are obtained under different gravity conditions. The results show the performances of PCHE satisfy the design request. comparing the results under different gravity conditions, Heat Transfer Enhancement Method (HTEM) is used by add fins and metal or ceramic foams to improve the efficiency of the PCHE under microgravity. It is valuable to the design and experiment research of space PCHE.

Key words: Space environment, Paraffin, Phase change heat exchange, Microgravity

CLC Number: