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建立了燃气机热泵空调系统模型,包括燃气发动机、压缩机、换热器、空调系统和建筑负荷模型。通过对模型的求解及结果分析,得到了燃气机热泵空调的性能。结果显示夏季燃气机热泵系统的二次换热器能够替代常规电力空调的电再热器实现空调风再热。冬季二次换热器能够实现系统余热直接向室内供暖,室外温度不太低时可以充分利用发动机余热实现房间供暖。室外温度较低时,可以实现发动机余热和热泵系统联合供暖,节能效果明显。在夏季系统的最大一次能源利用率能达到1.6以上,冬季最高能达到1.8以上。系统具有良好的能源利用效率。
A gas engine heat pump air conditioning system model was established, including gas engine, compressor, heat exchanger, air conditioning system and building load model. Through the solution to the model and the result analysis, the performance of the gas engine heat pump air conditioner is obtained. The results show that the secondary heat exchanger of the summer gas engine heat pump system can replace the conventional electric air conditioner electric reheater to achieve the air conditioning air reheat. In winter, the secondary heat exchanger can directly heat the system waste heat to the room, and when the outdoor temperature is not too low, the engine waste heat can be fully utilized to heat the room. When the outdoor temperature is low, it can realize the combined heating of engine waste heat and heat pump system, and the energy-saving effect is obvious. In the summer system, the maximum primary energy utilization rate can reach more than 1.6, winter can reach 1.8 or more. The system has good energy efficiency.