탄화수소계 냉매의 증발 압력강하 특성에 관한 실험적 연구

Study on Evaporation Pressure Drop of Hydrocarbon Refrigerants

  • 이광배 (부경대학교 대학원) ;
  • 이호생 (부경대학교 대학원 냉동공조공학과) ;
  • 김재돌 (동명대학 냉동공조공학과) ;
  • 윤정인 (부경대학교 대학원)
  • 발행 : 2005.07.01

초록

Experimental results are presented for heat transfer and pressure gradients of HCs refrigerants R-290, R-600a, R-1270 and HCFC refrigerant R-22 during evaporating inside horizontal double pipe heat exchangers. Two tubes with a tube diameter of 12.70mm and 9.52mm are used for this investigation. Hydrocarbon refrigerants have higher pressure drop than R-22 in 12.7mm and 9.52mm. The results from the investigation can be used in the design of heat transfer exchangers using hydrocarbons as the refrigerant for the air-conditioning systems.

키워드

참고문헌

  1. M. J. Molina, and F. S. Rowland. 'Stratospheric Sink for Chlorofluoromethanes: Chlorine Atom Catalyzed Destruction of Ozone', Nature, Vol. 249, pp. 810-814. 1974 https://doi.org/10.1038/249810a0
  2. M. J. Kurylo, 'The Chemistry of Stratosp heric Ozone: Its Response to Natural and Anthropogenic Influences', Int. J. Ref., Vol. 13, pp. 62-72, 1990 https://doi.org/10.1016/0140-7007(90)90003-F
  3. T. Ebner and H. Halozan, 'Testing the Available Alternative-An Examination of R-134a, R-152a and R-290', IEA HPC Newsletter, Vol. 12, No. 1, Sittard, The Netherlands, 1994
  4. R. W. James and J. F. Missenden, 'The Use of Propane in Domestic Refrigerators', International Journal of Refrigeration, Vol. 15, No. 2, pp. 95-100, 1992 https://doi.org/10.1016/0140-7007(92)90033-Q
  5. D. Gursaran and P. E. Mathur, 'Hydrodynamic Characteristics of Propane(R-290), Isobutane(R-600a), and 50/50 Mixture of Propane and Isobutane', ASHRAE Transactions Vol. 106, Part 2, pp. 571-582, 2000
  6. W. Spatz Mark, F. Yana Motta Samuel, 'An evaluation of options for replacing HCFC-22 in medium temperature refrigeration systems', International Journal of refrigeration, Vol. 27, No. 5, pp. 475-483, 2004 https://doi.org/10.1016/j.ijrefrig.2004.02.009
  7. Adrian Greco, Giuseppe peter Vanoli, Evaporation of refrigerants in a smooth horizontal tube: prediction of R22 and R507C heat transfer coefficients and pressure drop', Applied Thermal Engineering, Vol. 24, pp. 2189-2206, 2004 https://doi.org/10.1016/j.applthermaleng.2004.02.006
  8. Halim Wijaya, W. Spatz Mark ' Two-Phase Flow Heat Transfer and Pressure Drop Characteristics of R-22 and R-32/125', ASHRAE Transaction, Vol. 101, part. 2, pp. 1020-1026, 1995
  9. K. Torikoshi and T. Ebisu, ' Heat Rtansfer Characteristics and Pressure Drop Characteristics of R-134a, R-32 and a Mixture of R-32/R-134a Inside a Horizontal Tube', ASHRAE Transaction Research, Vol. 99(2), pp. 90-96, 1993
  10. R. J. Moffat, 'Using Uncertainty Analysis in the Planning of an Experiment', Journal of Fluid Engineering, 107, pp. 173-182, 1985 https://doi.org/10.1115/1.3242452
  11. J. P. Holman, Experimental Methods for Engineering, 5th Ed., Mcgraw Hill, 1989