我们开发了一种利用多种热源的高效水源热泵系统。作为该系统的主要组成部分，开发了利用太阳能热和空气热的天空源热泵SSHP和具有内水蓄热能力的大直径地下换热器。该系统可以通过白天利用太阳能和夜间利用地面热量来高效运行。此外，太阳能产生的多余热量可以储存在地下换热器中。我们对整个系统进行了实验，并确认了其在加热操作中的性能。根据两个实验日的评估结果，SSHP和整个系统的COP分别为9.3和3.1。此外，还开发了包含上述两个组件模型的系统仿真。通过实验数据与仿真数据的对比验证，证实了仿真具有足够的精度。 然后，通过仿真对整个系统的年度性能进行了预测，结果表明，SSHP和整个系统的年度COP分别为7.5和4.2。引用:2019年冬季会议，佐治亚州亚特兰大，会议论文

We developed a high-efficiency water source heat pump system which utilizes multiple heat sources. As main components of the system, a Sky Source HeatPump, SSHP, utilizing solar heat and air heat, and a large-diameter ground heat exchanger with thermal storage capacity of the internal water weredeveloped. The system can be efficiently operated by utilizing solar heat at daytime and ground heat at nighttime. Also surplus heat from the solar heatcan be stored in the ground heat exchanger. We had conducted an experiment of the whole system and confirmed its performance in heating operation.According to the evaluation of two experimental days, the results showed that the SSHP and whole system have COPs of 9.3 and 3.1, respectively.Furthermore, a system simulation including the models of above two components was developed. As a result of comparative verification between theexperimental data and simulation data, it was confirmed that the simulation had sufficient accuracy. Then, the annual performance of the whole systemwas predicted by the simulation and the results showed that the SSHP and whole system have high annual COPs of 7.5 and 4.2, respectively.