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Journal of Enhanced Heat Transfer
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ISSN Druckformat: 1065-5131
ISSN Online: 1563-5074

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v12.i4.20
pages 315-325

Experimental Study of the Dynamic Heat Transfer Performance of a Coaxial Thermosyphon

Jian-Hui Yang
College of Physical Sciences, Graduate School, Chinese Academy of Sciences, Beijing 100049; and Technical Institute of Physics and Chemistry, CAS, P.O. Box 2711, Beijing 100080, China
Qing Li
Technical Institute of Physics and Chemistry, CAS, P.O. Box 2711, Beijing 100080, China
Wen-Qiang Lu
Division of Thermal Science, Department of Physics, The Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
Zheng-Yu Li
Cryogenic Laboratory, Huazhong University of Science and Technology, Wuhan, 430073, China
Qiang Li
Technical Institute of Physics and Chemistry, CAS, P.O. Box 2711, Beijing 100080, China
Yuan Zhou
Technical Institute of Physics and Chemistry, CAS, P.O. Box 2711, Beijing 100080, China

ABSTRAKT

A two-phase thermosyphon with coaxial riser and down-comer was experimentally investigated. The effects of heating rate, transfer tube length, charging capacity, area ratio of riser and down-comer on the performance are tested to gain insight into the natural circulation in the coaxial thermosyphon. The results showed that the presented coaxial thermosyphon has stronger heat transfer ability and dynamic performance advantages relative to the natural circulation in a conventional single-tube thermosyphon.


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