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作者:

Peng, Da-Wen (Peng, Da-Wen.) | Lu, Yuan-Wei (Lu, Yuan-Wei.) (学者:鹿院卫) | Yu, Qiang (Yu, Qiang.) | Liu, Li-Hua (Liu, Li-Hua.) | Wu, Yu-Ting (Wu, Yu-Ting.) (学者:吴玉庭)

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摘要:

To obtain the phase change heat transfer mechanism of molten salt in single energy storage tank, quaternary mixed nitrate with low-melting-point is studied. A VOF and enthalpy-porosity coupled model is used to simulate the phase change process of phase change material (PCM) in the thermal storage unit under the condition of bottom heating, which is verified by experiments. The results show that the obvious temperature stratification and a fluctuation of the solid-liquid interface can be observed during the melting process. Heat transfer is directly affected by the natural convection intensity, and the position of the solid-liquid interface determines the development of the natural convection. The results in this paper can be a base for the efficient utilization of PCM and the optimization of single-tank thermal storage system. © 2018, Science Press. All right reserved.

关键词:

Computer simulation Fused salts Heat storage Melting point Natural convection Nitrates Phase change materials Phase interfaces Storage (materials) Tanks (containers)

作者机构:

  • [ 1 ] [Peng, Da-Wen]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Lu, Yuan-Wei]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Yu, Qiang]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Liu, Li-Hua]Beijing Municipal Administration of Senior Technical School, Beijing; 102600, China
  • [ 5 ] [Wu, Yu-Ting]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing; 100124, China

通讯作者信息:

  • 鹿院卫

    [lu, yuan-wei]key laboratory of enhanced heat transfer and energy conservation, ministry of education and key laboratory of heat transfer and energy conversion, beijing university of technology, beijing; 100124, china

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来源 :

Journal of Engineering Thermophysics

ISSN: 0253-231X

年份: 2018

期: 10

卷: 39

页码: 2264-2270

ESI学科: PHYSICS;

ESI高被引阀值:76

JCR分区:4

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