Abstract
Two control methods are presented for the ground source heat pump (GSHP) and radiant floor (RF) heating system, one is the set return water temperature control method, and another one is the set indoor air temperature control method. To search for performance differences of the combined system mentioned above, some experimental exploration is carried out mainly in four aspects: the performance of ground heat exchanger, soil temperature distribution at different depths, the load trace damping during shutdown of the system, and the system energy consumption. Experiment results show that the set indoor air temperature control method gives a better performance in heat exchange ability and system energy consumption when compared with the set return water temperature control method. Both of them have an excellent performance in soil temperature distribution and load trace damping.
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