Research and application of design method of hybrid ground-source heat pump system with heat compensation

To eliminate the soil thermal imbalance of ground-source heat pump system (GSHP) in cold region, proposes a hybrid ground-source heat pump system with heat compensation. The previous studies approve that the proposed system is energy-efficient and has great potential for application. To promote its application normally and reasonably, presents the design method based on TRNSYS. This design method includes five parts: calculation of building load, selection of GSHP unit, design of ground-source heat exchangers, selection of water pump and heat compensation unit. The predicting and adjusting period of the design method can well guarantee the system’s heating reliability, the soil’s thermal balance, the stability of soil temperature fluctuation, and the heating performance of GSHP unit. At last, taking a project as an example, demonstrates the design method specifically.