制冷水温对低温空气源热泵制冷性能影响的实验研究OA

To study the influence of refrigeration water temperature on the refrigeration performance of low-temperature air source heat pump,refrigeration experiments were conducted on a low-temperature air source heat pump in the enthalpy difference laboratory,using the liquid secondary refrigerant method to calculate the refrigeration capacity.Experiment results show that at the ambient temperature of 35℃,with the cooling water supply temperature varying from 5℃to 20℃,the Coefficient of Performance(COP)of the experimental prototype increases from 2.41 to 2.86,representing an increase of 18.67%.The refrigeration capacity increases from 53.01 kW to 73.29 kW,reflecting an increase of 38.26%;The power consumption rises from 21.97 kW to 25.66 kW,increasing by 16.80%.Considering the prototype COP,the power consumption and the practical application of refrigeration,the cooling water supply tem-perature between 12～16℃is deemed more suitable.