空气相对湿度对空气源热泵热水器性能的影响

The Effect of Air Relative Humidity on Performance of Air-source Heat Pump Water Heater

通过对空气源热泵热水器的性能进行实验研究,考察了空气的相对湿度对其性能的影响。实验结果表明:空气的相对湿度对蒸发压力、COP和吸气温度等性能有一定的影响;相对湿度的增大会导致蒸发器表面冷凝水增多,有效润湿面积增大,空气侧与制冷剂侧换热系数增加,最终导致蒸发器潜热换热量增加,从而强化了传热。

The effect of air relative humidity on the performance of air-source heat pump water heater was studied in this paper.The results show that the air relative humidity plays a certain role in energy efficiency,evaporation pressure and suction temperature.Increasing the air relative humidity will lead to more condensated water on the evaporator surface and greater wetting area.In addition,the heat transfer of latent heat can be increased by the growth of air side and refrigerant side heat transfer coefficient.