| Title |
Performance of HFC32/HFC152a Mixture for Water-source Heat Pumps |
| Authors |
강동규(Dong gyu Kang) ; 김욱진(Wook-Jin Kim) ; 정동수(Dongsoo Jung) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.5.391 |
| Keywords |
성능계수 ; 냉매 22 ; 혼합냉매 R32/R152a ; 냉동용량 ; 열펌프 ; 공조기 ; 압축기토출온도 Coefficient Of Performance ; R22 ; Refrigerant mixture of R32/R152a ; Capacity ; Heat pump ; Air-conditioning ; Discharge temperature |
| 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℃ and -7/41℃ 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℃ 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. |