가역 루프 히트파이프의 작동특성에 관한 실험적 연구

An Experimental Investigation on the Operating Characteristics of a Reversible Loop Heat Pipe

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

초록

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 $0.02^{\circ}C/W$.

키워드

참고문헌

  1. Laub, J. H. and McGinness, H. D., 1961, Recirculation of a two-phase fluid by thermal and capillary pumping, Technical Report No. 32-196, Jet Propulsion Laboratory, California Inst. Tech., December 3
  2. McGinness, H. D., 1961, Capillary pumping for closed-cycle gas systems, Research Summary No. 36-10, Vol., 1, Jet Propulsion Laboratory, California Inst. Tech., September 1, pp.9-13
  3. Stenger, F. J., 1966,. Experimental feasibility study of water-filled capillary-pumped heattransfer loop, NASA TM X -1310, Lewis Research Center, Cleveland, OH, August 3
  4. Faghri, A., 1995, Heat pipe science and technology, Taylor Francis
  5. Ku, J. and Yun, S., 1992, A prototype heat exchanger for the capillary pumped loop flight experiment, AIAA Paper 92-2910
  6. Maidanik, Y, Vershinin, S., Kohlodov, V. and Dolgirev, J. 1985, Heat transfer apparatus, US Patent No. 4515209, May 7
  7. Maidanik, Y, Fershtater, S. and Goncharov, K., 1991, Capillary-pumped loop for the systems of thermo regulation of spacecraft, ESA SP-324, December 15
  8. Dickey, J. T. and Peterson, G. P., 1994, An experimental and analytical investigation of the operational characteristics of a capillary pumped loop, Journal of Thermophysics and Heat Transfer, Vol. 8, No.3, pp.602-607 https://doi.org/10.2514/3.584
  9. ASHRAE, 1986, Standard methods for temperature measurement, ANSI/ASHRAE 41.4
  10. Dunn, P. and Reay, D., 1982, Heat Pipes, 3rd ed., Pergamon Press, New York
  11. Daubert, T. E. and Danner, R. P., 1981, Physical and Thermodynamic Properties of Pure Chemicals, Data Compilation, Hemisphere Publinshing Corporation, New York
  12. ASHRAE, 1985, Fundamentals handbook, CH. 18, pp. 1-10
  13. Kaya, T. and Hoang, T. T., 1999, Mathematical modeling of loop heat pipes and experimental validation, Journal of Thermophysics and Heat Transfer, Vol. 13, No.3, pp.314-320 https://doi.org/10.2514/2.6461