U형 히트파이프의 작동 특성에 관한 연구

Gang, Hwan-Guk;Kim, Cheol-Ju;Lee, Yong-Su

  • 발행 : 2001.12.01


In this study, the heat transfer characteristics of a U-shape heat pipes were investigated. Heat is supplied to the U heat pipe through its middle zone(evaporator), and is released to the environment through its both arms(condensers). Both heat transfer coefficients and heat transport limitations were measured and compared with correlations previously developed for straight type heat pipes. Special concerns were focused to the cases, when each of condensers were submitted to a different cooling conditions, relatively. As a result. the heat transfer limitation of a U-shape heat pipe was found out to be 10∼15% less than the value for a straight heat pipe with an equivalent size.


히트파이프;플러딩;열전달한계;히트싱크;열전달 계수


  1. Katto. Y., 1978, 'Generalized Correlation for Critical Heat Flux of Natural Convection Boiling in Confined Channels,' Trans. JSME, Vol. 44, pp. 3908-3911
  2. Fukano, T., Kadoguchi, K. and Imura, H., 1987, 'Experimental Study on the Heat Flow at the Operating Limit of a Closed Two-Phase Thermosyphon,' Trans. JSME. Ser. B, Vol. 53, No. 487, pp. 1065 -1071
  3. Kim, B. H., Kim, C. J., 1995, 'Design Optimization for the Enhancement of Large Scale Thermosyphon,' KSME Journal Vol. 9, No.2, pp. 286-297
  4. 홍진관, 최상곤, 김대성, 정원복, 변윤식, 양권옥, 2001, '그루브수 증가에 따른 알루미늄 히트 파이프의 성능향상에 관한 실험적 연구,' 설비공학 논문집 제14권 제6호, pp. 474-481
  5. Stephan, K., Abdelsalam, M., 1980, 'Heat Transfer Correlerations for Natural Convection Boiling,' Int. J Heat Mass Transfer, Vol. 23, pp. 73-87
  6. Kutateladze, S.S., 1952, Heat Transfer during Condensation and Boiling, 2nd Ed.(in Russian), State Science and Technical Publishing House of Literature on Machinery, (also in translate form as AEC tr-3770)
  7. Chi, S., W., 1976, Heat Pipe Theory and Practice, McGraw Hill Book, Co.
  8. Imura, H., Sasaguchi, K., Kozai, H., 1983, 'Critical Heat Flux in a Closed Two-Phase Thermosyphon.' Int. J Heat and Mass Transfer, Vol.26, No.8, pp. 1181 -1188
  9. Pioro, L.L., 1999, 'Experimental Evaluation of Constants for the Rohsenow Pool Boiling Correleration,' Int. J. Heat Mass Transfer, Vol. 42, No. 11, pp. 2003-2013
  10. Ueda, T., Miyashita, T., Chu, P.H., 1988, 'Heat Transport Characteristics of a Closed Two-Phase Thermosyphon,' Trans. JSME, Ser. B. Vol.54, No. 506, pp. 2848-2855
  11. Imura, H., Kusada, H., Oyata, J., Miyazaki, T. and Sakamoto, N., 1979, 'Heat Transfer in the Two-Phase Closed Thermosyphon,' Trans. JSME, Vol. 45, pp. 712-722
  12. Chang, J. Y. and You, S. M., 1997, 'Boiling Heat Transfer Phenomena from Micro Porous and Porous Surfaces in Saturated FC-72,' Int. J. Heat Mass Transfer, Vol. 40, No.18, pp. 4437-44477
  13. Carey, V.P., 1992, Liquid-Vapor Phase Change Phenomena, Hemisphere Pub
  14. 강환국, 김철주, 김재진, 1999, 'PFC 히트파이프의 열전달 한계에 관한 연구,' 공기조화 냉동공학 논문집, 제11권 제3호, pp. 313-320
  15. Faghri, A., 1995, Heat Pipe Science and Technology, Taylor & Francis
  16. Dunn, P.D., Reay, D.A., 1994, Heat Pipes, 4th Ed. Pergamon Press, New York
  17. 이기우, 박기호, 전원표, 2001, 'PFC 작동유체사용 U형 히트파이프의 열 전달특성 연구,' 설비공학 논문집, 제13권 제8호, pp. 796-802
  18. 강환국, 김철주, 김재진, 1998, 'Perfluorocarbon 히트파이프의 열전달 계수에 관한 연구,' 한국에너지공학회지, 제7권 제2호, pp. 194-201
  19. Murase, T., Sasaki, C., Matsumoto, K., Kimura, Y., Kotani, M., and Sotani, J., 1993, 'Power Semiconductor Device Cooling System Using Electrically Insulated Heat Pipe [POWERKICKER-E] for Rolling Stock,' Furokawa Review, No. 12, pp. 82 -93
  20. Akachi, H. and Polasek, F., 1997, 'Thermal Control of IGBT modules in Traction Drives by Pulsating Heat Pipes,' 10th IHPC, Stuttgart, Germany, E1