【摘要】 本文以某厂家补气增焓准二级压缩空气源热泵热水器为研究对象,研究了补气压比对系统制热量和性能系数(COP)的影响,对实验结果进行了热力学分析。结果表明:随着补气压比的增加,系统COP和制热量均呈现先上升后下降的现象;在实验的3种工况下,补气压比为0.2时系统COP达到最大值,相较于未调节补气压比的补气增焓准二级压缩空气源热泵系统,COP分别增长了23.1%、20.2%和8.2%。更多还原

【Abstract】 The quasi-secondary compressed enhanced vapor-injection air-source heat pump water heater of a certain manufacturer is taken as the research object, and the experimental results are subjected to thermodynamic analysis. The effect of the vapor-injection pressure ratio on the heating capacity and coefficient of performance(COP) of the system is studied. The results show that with the increase of the vapor-injection pressure ratio, the system’s COP and heating capacity both increase and then decrease. Under the three operating conditions of the experiment, the COP of the system reached the maximum value when the vapor-injection pressure ratio is 0.2, compared with the enhanced vapor-injection quasi-secondary compressed air-source heat pump system without adjusting the vapor-injection ratio, the COP increased by 23.1%, 20.2% and 8.2%, respectively.更多还原