Simulations for the Performance Evaluation of Ground Source Heat Pump Cooling System Combined with Hot Water Heat Pump

Ground source heat pump (GSHP) can increase ground temperature and reduce system coefficient of performance (COP) during long term operation in the cooling season. This study proposed a GSHP cooling system combined with a hot water heat pump to improve the performance of the GSHP system. In the present study, the system was configured so that the condensation heat from GSHP could be used as the evaporative heat source for the hot water heat pump. This study analyzed the COP of the proposed combined system, a single cooling system and a single hot water system by TRNSYS 18 simulation. Simulation results showed that the COP of the proposed system was 37.27% higher in the cooling part and 14.40% higher in the hot water part, compared with the single heat pump system.