Thermal Analysis of Void Cavity for Heat Pipe Receiver under Microgravity

分类： 动力与电气工程 >> 工程热物理学 提交时间： 2017-03-31 合作期刊: 《Advances in Atmospheric Sciences》

GUI Xiaohong SONG Xiange NIE Baisheng

摘要： Based on theoretical analysis of PCM (Phase Change Material) solidification process, the model of improved void cavity distribution tending to high temperature region is established. Numerical results are compared with NASA (National Aeronautics and Space Administration) results. Analysis results show that the outer wall temperature, the melting ratio of PCM and the temperature gradient of PCM canister, have great difference in different void cavity distribution. The form of void distribution has a great effect on the process of phase change. Based on si- mulation results under the model of improved void cavity distribution, phase change heat transfer process in thermal storage container is analyzed. The main goal of the improved designing for PCM canister is to take measures in reducing the concentration distribution of void cavity by adding some foam metal into phase change material.

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