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 Study on Condensation Characteristics at Various Condensation Pressure of R407C

응축압력 변화에 따른 R407C의 응축특성에 관한 연구

  • 전창덕 (충주대학교 기계공학과) ;
  • 장경근 (연세대학교 기계공학과 대학원) ;
  • 김창덕 (연세대학교 기계공학과 대학원) ;
  • 이진호 (연세대학교 기계공학과)
  • Published : 2003.03.01
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Abstract

R407C is considered as alternative refrigerant of R22 for air conditioners. Experimental investigation is made to study the condensation heat transfer characteristics of slit fin-tube heat exchanger using alternative refrigerant, R407C. Experiments are carried out at condensation pressure of 2110 kPa and 1943 kPa with the degree of superheat of 1$0^{\circ}C$ and mass flux varying from 150 to 250 kg/$m^2$s for refrigerant side. The inlet air condition is dry bulb temperature of 35$^{\circ}C$, relative humidity of 50% and air velocity varying from 0.8 to 1.6 m/s. Experiments show that pressure drop gets smaller at a higher condensation pressure especially when condensation pressure is raised from 1943 to 2110 kPa. Heat transfer rate gets smaller at a lower condensation pressure in the range of experimental condition.

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References

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