| Title |
Performance of HFC32/HFC125 Mixtures for Heat Pumps |
| Authors |
김욱진(Wook-Jin Kim) ; 강동규(Dong Gyu Kang) ; 이요한(Yohan Lee) ; 정동수(Dongsoo Jung) |
| Keywords |
성능계수 ; 냉매 410A ; 혼합냉매 R32/R125 ; 냉동용량 ; 열펌프 ; 공조기 ; 압축기토출온도 Coefficient of Performance ; R410A ; Refrigerant mixture of R32/R125 ; Capacity ; Heat pump ; Air-conditioning ; Discharge temperature |
| Abstract |
In this study, performance of R410A(50%R32/50%R125) and HFC32/HFC125 mixture is measured to examine the effect of composition shift of R410A used for various air-conditioners and heat pumps. The composition of HFC32/HFC125 mixture varies from the reference composition of R410A ±10% with 5% interval. Tests carried out in a heat pump bench tester at the evaporation and condensation temperatures of 7/45℃ and -7/41℃ for summer and winter conditions, respectively. Test results show that both the coefficient of performance (COP) and compressor power of the HFC32/HFC125 mixture have the maximum difference of 2.0% as compared to those of R410A. Compressor discharge temperatures of HFC32/HFC125 mixture are increased up to 6.7℃ as compared to that of R410A. The amount of charge for HFC32/HFC125 mixture vary within 5.6% as compared to that of R410A. Overall, performance of R410A is not appreciably affected by the composition shift of ±10% of R32 under both air-conditioning and heat pumping conditions. |