2018 Volume 35 Issue 4 Pages 313-
The subject of this study is to develop design and performance prediction tool for the ground source heat pump (GSHP) system with the variable water volume (VWV) in the primary side and the variable refrigerant flow (VRF) in the secondary side. The calculation models for the electric power consumptions of the water source VRF system and the circulation pump with VWV control were firstly explained. Next, the simulation tool, which was developed by applying the calculation models, were validated by comparing with the measurement data obtained by the field experiment. In addition, it was assumed that the GSHP system was installed in the middle scale hospital building that has the large variation of thermal load and the electric power consumptions for the GSHP systems were calculated. When the GSHP system with the VWV and the VRF was compared to the conventional GSHP system with the constant water volume in the primary side and secondary side, the reductions of electric power consumption for circulation pumps were 91% in the heating season and 92% in the cooling season, respectively.
