Chen Hongqun, Wang Fang, Ou Junyan, et al. Experimental Study of HFO-1234ze and HFC-32 Mixture on Heat Pump Water Heater[J]. Journal of refrigeration, 2016, 37(6).
Chen Hongqun, Wang Fang, Ou Junyan, et al. Experimental Study of HFO-1234ze and HFC-32 Mixture on Heat Pump Water Heater[J]. Journal of refrigeration, 2016, 37(6). DOI: 10.3969/j.issn.0253-4339.2016.06.020.
the thermophysical properties of mixing refrigerant HFO-1234ze/HFC-32 were calculated in this paper
and the cycle performance of mixed refrigerant in different ratios was figured out according to the heat pump water heater test standard. The results showed that the optimal mixture ratio is 0.3/0.7. With this ratio
the performance of heat pump water heater in different operating conditions were conducted and compared with R410A. The results indicate that the mixed refrigerant’s compressor power consumption and discharge pressure are lower than R410A system
which is conducive to the safe and stable operation of the water heater; under the standard condition
the COP is 4.03 which is higher than R410A’s 3.6; meanwhile the decline rate of COP is lower than R410A when the temperature is higher than the standard condition. Therefore
the mixed refrigerant is feasible to replace R410A.