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

  • 제16권1호
  • /
  • Pages.42-53
  • /
  • 2004
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  • 1229-6422(pISSN)
  • /
  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

응축기의 설계조건에서 R22, R407C, R410A의 압력강하 예측 및 실험

Prediction and Experiment of Pressure Drop of R22, R407C and R410A on Design Conditions of Condenser

  • 김창덕 ((주)센추리 기술연구소) ;
  • 박일환 (한국기술교육대학교 기계공학과) ;
  • 이진호 (연세대학교 기계공학과)
  • 발행 : 2004.01.01
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초록

An experimental study on the refrigerant-side pressure drop of slit fin-tube heat exchanger has been carried out. A comparison was made between the predictions of previously proposed empirical correlations and experimental data for the pressure drop on design conditions of condenser in micro-fin tube for R22 and its alternatives, R407C (R32/125/134a, 23/25/52 wt.％) and R410A (R32/125, 50/50 wt.％). Experiments were carried out under the conditions of inlet refrigerant temperature of 6$0^{\circ}C$ and mass fluxes varying from 150 to 250 kg/$m^2$s for R22, R407C and R410A. The inlet air conditions are dry bulb temperature of 35$^{\circ}C$, relative humidity of 40% and air velocity varying from 0.68 to 1.43 m/s. Experiments show that pressure drop for R410A and R407C were 17.8∼20.2％ and 5∼6.8％ lower than those of R22 respectively for the degree of subcooling of 5$^{\circ}C$. For the mass fluxes of 200∼250 kg/$m^2$s, the deviation between the experimental and predicted values for the pressure drop was less than $\pm$20％ for R22, R407C and R410A.

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참고문헌

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