【摘 要】
：
为进一步提高跨临界CO2水源热泵系统的效率,对原有试验台进行改造,建立新的CO2水源热泵系统。新的水源热泵实验台采用新型套管式蒸发器和气体冷却器。在实验中考虑气体冷却器
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为进一步提高跨临界CO2水源热泵系统的效率,对原有试验台进行改造,建立新的CO2水源热泵系统。新的水源热泵实验台采用新型套管式蒸发器和气体冷却器。在实验中考虑气体冷却器进水温度分别为15、20、25℃3种工况,对CO2水源热泵提供温度为45~70℃热水时系统的性能进行分析。结果发现,采用新型换热器可使热泵系统效率提高。气体冷却器进水温度越低,热泵系统的制热效率越高。降低冷却器出口工质的温度有助于提高系统的制热效率。相同的进出水温度下存在较优的蒸发温度。制取的热水温度越高,热水的质量流量越低。
In order to further improve the efficiency of transcritical CO2 water source heat pump system, the original test bench was modified to establish a new CO2 water source heat pump system. The new water source heat pump test bed using a new casing evaporator and gas cooler. In the experiment, the inlet gas temperature of the gas cooler was considered to be 15, 20 and 25 ℃ respectively, and the performance of the system was analyzed when the CO2 water source heat pump provided the hot water with the temperature of 45 ~ 70 ℃. The results show that the use of new heat exchangers to heat pump system efficiency. The lower the gas cooler inlet temperature, the higher the heating efficiency of the heat pump system. Reducing the temperature of the refrigerant outlet refrigerant helps to increase the heating efficiency of the system. The same inlet and outlet temperatures exist better evaporation temperature. Preparation of hot water temperature is higher, the lower the mass flow of hot water.
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