本文讨论了以R-407C为制冷剂，配备蒸汽喷射涡旋压缩机的20kW空气-水热泵的性能和运行图的实验研究结果。实验室试验根据欧洲标准EN 14511（2004）进行，采用经校准的室温式热量计和循环回路，使热泵工作条件保持在所需值（空气干球和湿球温度、水质量流量、入口温度和出口温度）。 结果表明，对于所考虑的每一个空气干球温度，热泵提供的加热能力几乎是恒定的，作为水离开温度的函数。此外，压缩机排气温度达到较低值，降低了空气干球温度，这导致热泵运行图扩大，尤其是在空气干球温度较低和出水温度较高的区域。引文:ASHRAE会议论文，2010年，第116卷，pt。新墨西哥州阿尔伯克基2号

The paper discusses the results of an experimental study carried out to investigate the performance and the operating map of a 20 kW air-to-water heat pump equipped with vapour injection scroll compressor and using R-407C as refrigerant.Laboratory tests were conducted according to European Standard EN 14511 (2004) by means of a calibrated ambient room type calorimeter and a hydronic circuit that allow to maintain the heat pump working conditions to the desired value (air dry bulb and wet bulb temperature, water mass flow rate, inlet temperature and outlet temperature).The results show that the heat pump provides, for every air dry bulb temperature considered, a heating capacity nearly constant as a function of water leaving temperature. Moreover, the compressor discharge temperature reaches lower values lowering air dry bulb temperature and this lead to an enlargement of the heat pump operating map, especially in the region of low air dry bulb temperature and high water leaving temperature.