TRNSYS dataset on switching strategies for dual-source heat pumps with flat-panel ground heat exchanger

A novel TRNSYS Type was developed for a patented shallow horizontal ground heat exchanger (HGHE), called Flat-Panel (FP), designed at the University of Ferrara. The Type was implemented in TRNSYS models of a GSHP and of a dual air and ground source heat pump (DSHP) to verify Type reliability and evaluate potential DSHP advantages over GSHP in terms of efficiency and ground-loop downsizing. The performance of the system was analyzed under varying:HGHE lengths. The parameter, surface-to-length ratio (SL), was defined to relate the required GHX length to the building floor surface. Five values were considered:1.2 (reference), 1.4, 1.8, 2.4 and 3.6.DSHP control strategies, which were based on onset temperature differential (DT). Ground was used when ground temperature exceeded outdoor air temperature by an onset temperature differential. Six different values of DT were considered: 0, 2, 4, 6, 8 and 10°C.