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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지
DOI QR코드

DOI QR Code

Performance of HFC32/HFC152a Mixture for Water-source Heat Pumps

수열원 히트펌프 용 HFC32/HFC152a 혼합냉매의 성능평가

  • Received : 2011.10.21
  • Published : 2012.05.10
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, performance of HFC32/HFC152a mixture is measured in the composition range of 20 to 50% R32 with an interval of 10% for the comparison with the conventional HCFC22 in water-source heat pumps. Tests are carried out under the same capacity in a heat pump bench tester equipped with a variable speed compressor at the evaporation and condensation temperatures of 7/$45^{\circ}C$ and -7/$41^{\circ}C$ for summer and winter conditions, respectively. Test results show that the compressor power of the HFC32/HFC152a mixture is 13.7% lower than that of HCFC22 while the coefficient of performance(COP) the HFC32/HFC152a mixture is 15.8% higher than that of HCFC22. Hence, from the view point of energy efficiency, the HFC32/HFC152a mixture is excellent as compared to HCFC22. Compressor discharge temperatures of HFC32/HFC152a mixture are increased up to $15.4^{\circ}C$ as compared to that of HCFC22. The amount of charge for HFC32/HFC152 mixture decrease up to 27% as compared to that of HCFC22. Overall, HFC32/ HFC152a mixture is an excellent long term candidate to replace HCFC22 in water-source heat pumps.

Keywords

References

  1. United Nations Environment Programme, 1987, Montreal Protocol on Substances That Deplete the Ozone Layer, Final Act, New York, United Nations.
  2. United Nations Environment Programme, 2002, Production and Consumption of Ozone Depleting Substances Under the Montreal Protocol 1986-2000, Ozone Secretariat, UNEP, Nairobi, Kenya.
  3. Song, Y. J., Park, B. J., Jung, D. S., and Kim, C. B., 1998, Performance evalution of R22 alternative refrigerants, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 10 No. 3, pp. 292-392.
  4. Cecilia Gabrielii, Lennart Vamling, 2000, Dropin replacement of R22 in heat pumps used for district heating-influence of equipment and property limitations, 2001, International Journal of Refrigeration, Vol. 24, pp. 660-675.
  5. ARI, 1992-1997, R22 and R502 Alternative Refrigerants Program, US Air-Conditioning and Refrigeration Institute.
  6. Korean Intellectual Property Office, 2000, The Report for Investigation of New Technology Trend(HVAC&R), Mechanics/Metalics, Vol. 6, pp. 537-541.
  7. Didion D. A., 1994, Private Communication, US National Institute of Standards and Technology, Gaithersburg, MD.
  8. Global Environmental Change Report, 1997, A Brief Analysis of the Kyoto Protocol, Vol. IX, No. 24.
  9. Regulation (EC) No. 842 of the European Parliament and of the Council of 17 May, 2006, on Certain Fluorinated Greenhouse Gases, Official J. European Union, 2006.
  10. Cox, N., 2004, Energy Comparison of A Ground Source Heat Pump Using Hydrocarbon Refrigerants, Prod. of the 6th IIR Gustav Lorentzen Natural Working Fluids Conference, Glasgow, UK.
  11. Hwang, G. and Kim, J., 2006, Applied Technologies of Geothermal Energy, Magazine of SAREK, Vol. 35, No. 11, pp. 38-45.
  12. You, H., 2005, Technology of eco-friendly geothermal system, HARF KO 2005 International Symposium, pp. 605-615.
  13. Choi, B. Y., 2005, Application of Water Heat Storage Heat Pump System Using Waste and Geothermal Heat Source, Proceeding of HAR FKO 2005, International Symposium of Korean Journal of Air-Conditioning and Refrigeration Engineering, HARFKO 2005 International Symposium, pp. 445-456.
  14. Park, T., Lee, Y., 2005, Recent Trend of Unutilized Energy, Magazine of SAREK, Vol. 34, No. 10, pp. 52-53.
  15. Calm, J. M. and Domanski, P. A., 2004, R-22 replacement status, ASHRAE Journal, pp. 29-39.
  16. Jung, D., Song, Y., and Park, B., 2000, Performance of Alternative Refrigerant Mixtures, Int. J. Refrigeration, Vol. 23, No. 6, pp. 466-474. https://doi.org/10.1016/S0140-7007(99)00066-3
  17. Mulroy, W., Kauffeld, M., McLinden, M. O., and Didion, D. A., 1988, Experimental Evaluation of Two Refrigerant Mixtures in a Breadboard Air Conditioner, Proc. of Int. Inst. Refrigeration, Purdue Conference on CFCs, Commissions B1, B2, E1 and E2, pp. 27-34.
  18. Lemmon, E. W., Huber, M. L., and McLinden, M. O., 2007, NIST Reference Fluid Thermodynamics and Transport Properties, REFPROP version 9.0.
  19. Radermacher, R. and Jung, D., 1993, Theoretical analysis of replacement refrigerants for HCF C22 for residential uses, ASHRAE Trans., Vol. 99, No. 1, pp. 333-343.
  20. Jung, D., Radermacher, R., 1991, Performance simulation of single-evaporator domestic refrigerators charged with pure and mixed refrigerant, Int. J. Refrigeration, Vol. 14, pp. 223-232. https://doi.org/10.1016/0140-7007(91)90007-4