In this paper, experiments were conducted to achieve a better understanding of the oscillating heat pipe (OHP) operating behavior with water and ethanol as working fluid. The experimental results showed that there existed a necessary temperature difference between the evaporator and the condenser section to keep the heat pipe working. The maximum effective conductivity of the water OHP reached up to , while that of the ethanol OHP is of . Not all the OHPs are operated in the horizontal operation mode. The heat transfer performance of the ethanol OHP was obviously affected by the filling ratio and the inclination angle but the influence law is irregular. The effect of the filling ratio and the inclination angle of the water OHP were smaller than that of the ethanol one. The heat transfer performance of the OHP was improved with increase of operating temperature. The startup characteristics of the OHP depended on the establishment of the integral oscillating process, which was determined by the operating factors. The startup temperature of the ethanol OHP varied from to and that of the water, OHP varied from to without considering the horizontal operating mode. The water OHP showed a better performance and more stable heat transfer characteristics than the ethanol OHP, which had no obvious advantages of the startup capability as well.
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December 2010
This article was originally published in
Journal of Heat Transfer
Research Papers
Heat Transfer Characteristics of Oscillating Heat Pipe With Water and Ethanol as Working Fluids
Haizhen Xian,
Haizhen Xian
School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization,
North China Electric Power University
, Beijing 102206, China
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Yongping Yang,
Yongping Yang
School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization,
e-mail: yyp@ncepu.edu.cn
North China Electric Power University
, Beijing 102206, China
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Dengying Liu,
Dengying Liu
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, China
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Xiaoze Du
Xiaoze Du
School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization,
North China Electric Power University
, Beijing 102206, China
Search for other works by this author on:
Haizhen Xian
School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization,
North China Electric Power University
, Beijing 102206, China
Yongping Yang
School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization,
North China Electric Power University
, Beijing 102206, Chinae-mail: yyp@ncepu.edu.cn
Dengying Liu
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, China
Xiaoze Du
School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization,
North China Electric Power University
, Beijing 102206, ChinaJ. Heat Transfer. Dec 2010, 132(12): 121501 (6 pages)
Published Online: September 21, 2010
Article history
Received:
April 6, 2010
Revised:
July 27, 2010
Online:
September 21, 2010
Published:
September 21, 2010
Citation
Xian, H., Yang, Y., Liu, D., and Du, X. (September 21, 2010). "Heat Transfer Characteristics of Oscillating Heat Pipe With Water and Ethanol as Working Fluids." ASME. J. Heat Transfer. December 2010; 132(12): 121501. https://doi.org/10.1115/1.4002366
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