To investigate the performance of different operating strategies of a solar-assisted ground source heat pump (SGSHP) system in severe cold regions
a numerical simulation model is developed based on Fluent. Three operating modes are simulated and compared: a conventional ground source heat pump(GSHP) system
an SGSHP system with uniform heat storage
and an SGSHP system with partitioned heat storage. The results show that the coupled system achieves cross-seasonal heat storage and utilization. It also improves the energy efficiency of the ground source heat pump system and reduces the annual energy consumption by over 20%. The partitioned operating strategy demonstrates superior thermal regulation
concentrating heat storage in the inner zone and simultaneously lowering the outer zone temperature. The annual heat loss is reduced significantly from 38.71% to 19.19%
which improves the cross-seasonal heat storage efficiency and heat pump performance. The annual energy consumption of the system is further reduced.
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references
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