水源热泵热水器在不同水源温度下的热力性能测试

Test on the thermal performance of the water-resource heat pump water heater under conditions of different inlet water temperatures

对水源热泵热水器在蒸发侧不同的进水温度下的性能进行测试,结果表明:排气压力、排气温度和输入功率随着热水温度的升高而增加;制热功率和性能系数随着热水温度的升高而降低;系统的性能随着蒸发侧进水温度的升高而提高.当蒸发侧水温分别为12℃,15℃,30℃时,系统的制热功率分别为22.83 k W,25.95 k W,27.31 k W;系统的输入功率分别为5.30 k W,5.58 k W,5.84 k W;系统的制热系数分别为4.31,4.65,5.64.

An experiment was carried out on the performance of water-resource heat pump water heater under various inlet water temperature of evaporating side. The results showed that the discharge pressure,discharge temperature and power input were increased with hot water temperature; and the heating power and COP were decreased with hot water temperature. The coefficient of the system was increased with inlet water temperature on the evaporator side. The heating power of the system was 22. 83 k W,25. 95 k W,27. 31 k W,the power consumption of the system was 5. 30 k W,5. 58 k W,5. 84 k W,and the coefficient of the system was 4. 31,4. 65 and 5. 64 on conditions of evaporator inlet water temperature of 12 ℃,15 ℃ and 30 ℃,respectively.