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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Comparison of Condenser Characteristics using R410A and R22 under the Same Inlet Temperature Condition

동일한 유입온도조건에서 R410A와 R22 적용 응축기의 특성비교

  • Published : 2003.12.01
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Abstract

R410A is considered as an alternative refrigerant to R22 for air conditioners. An experimental investigation was made to study the characteristics of the heat transfer and pressure drop for R410A flowing in a fin-and-tube heat exchanger used for commercial air-conditioning units. Experiments were carried out under the conditions of inlet refrigerant temperature of 6$0^{\circ}C$ and refrigerant mass flux varying from 150 to 250 kg/$m^2$s for refrigerant side. The inlet air has dry bulb temperature of 35$^{\circ}C$, relative humidity of 40% and air velocity varying from 0.68 to 1.6 m/s. Experiments show that air velocity decreased by 16% is needed for R410A than that of R22 for subcooling temperature of 5$^{\circ}C$, which resulted in air-side pressure drop decrease of 15% for R410A as compared to R22. As a consequence, in order to provide the same design condition of a condenser, the fan requires lower electric-power consumption with R410A than that with R22.

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References

  1. International Journal Refrigeration v.13 Role of refrigerant mixture as alternatives to CFCs Didion,D.A.;Bivens,D.B.
  2. The International Symposium on HCFC Alternative Refrigerants Heat transfer characteristics in horizontal tubes for R-407C and R-410A Takashi Okazaki;Yoshihiro Sumida;Yoshiaki Tanimura
  3. Korean Journal of Air-Conditioning and Refrigeration Engineering v.14 no.9 An experimental study on condensation characteristics of slit fin-tube heat exchanger using alternative refrigerants, R407C and R410A Jeon,C.D.;Jang,K.K.;Kang,S.H.;Lee,J.
  4. Korean Journal of Air-Conditioning and Refrigeration Engineering v.11 no.4 Performance of a room air conditioner using R-410A according to the variation of outdoor temperature Kim,B.S.;Lee,S.H.
  5. Korean Journal of Air-Conditioning and Refrigeration Engineering v.15 no.3 Comparison of performance variation between R-22 and R-410A refrigeration systems Park,T.J.;Lee,M.K.;Jeon,J.H.;Jang,K.S.
  6. Applied Thermal Engineering v.20 Experimental investigation of two phase flow condensation of alternatives to HCHC-22 inside enhanced surface tubing Sami,S.M.;Maltais,H.
  7. International Journal Refrigeration v.24 Experimental investigation on condensation heat transfer and pressure drop of new HFC refrigerants Cavallini,A.;Censi,G.;Col.D.;Doretti,L.;Longo,G.A.;Rossetto,L.
  8. Applied Thermal Engineering v.21 Alternatives to HCFC-22 for air conditioners Devotta,S.;Waghmare,A.V.;Sawant,N.N.;Domkundwar,B.M.
  9. Korean Journal of Air-Conditioning and Refrigeration Engineering v.15 no.7 Comparison of condenser characteristics using R407C and R22 on the same inlet temperature condition Kim,C.D.;Jeon,C.D.;Lee,J.
  10. Fundamental Handbook (SI) ASHRAE
  11. Thermodynamic and transport properties of refrigerants and refrigerant mixtures database (REFPROP) (Ver. 6.01) McLinden,M.O.;Klein,S.A.;Lemmon,E.W.;Peskin,A.P.
  12. Mechanical Engineering v.75 Describing uncertainties in single sample experiments Kline,S.J.;McClintock,F.A.