Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Investigation on the Operating Characteristics of a Reversible Loop Heat Pipe

가역 루프 히트파이프의 작동특성에 관한 실험적 연구

  • Kim Bong-Hun (Automotive, Industrial and Mechanical Engineering Department, Daegu University) ;
  • Choi Joon-Min (Korea Aerospace Research Institute)
  • 김봉훈 (대구대학교 자동차.산업.기계공학부) ;
  • 최준민 (한국항공우주연구원)
  • Published : 2006.03.01
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Abstract

An experimental investigation of a Reversible Loop Heat Pipe (RLHP) was conducted to determine the operating limits and performance characteristics as functions of the thermophysical parameters, the heat input, and the cooling intensity. Variations in both temperature and heat transport capacity were measured and analyzed in order to accurately evaluate the transient operating characteristics. In addition, the maximum heat transport as a function of the mean evaporator temperature, the ratio of heat transport to heater input power as a function of the mean evaporator temperature, and the overall thermal resistance as a function of the overall heat transport capacity were examined as well. Results indicated that the cooling intensity played an important role on the operating characteristics and performance limitation. The maximum heat transports corresponding to cooling intensity $72W/^{\circ}C$ and $290W/^{\circ}C$ were 446 W and 924 W, respectively. Also, observation of the startup characteristics indicated that the mean evaporator temperature should be maintained between $40^{\circ}C$ and $60^{\circ}C$, and overall thermal resistance were measured as $0.02^{\circ}C/W$.

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References

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