23 September 2011
According to Beijing area climate condition, select a villa building and use the simulation program TRNSYS to model and analyse different ground-coupled heat pump systems with solar thermal collector. The results show that when the underground heat exchanger size is insufficient, the hybrid system can obviously improve the system
performance. The comprehensive effect of operation mode 2 is better. If solar energy is used as auxiliary heat source in winter heating conditions, this mode can be used as the optimization scheme in the design and operation of practical engineering.