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ENERGYPLUS VS DOE-2 : THE EFFECT OF GROUND COUPLING ON HEATING AND COOLING ENERGY CONSUMPTION OF A SLAB-ON-GRADE CODE HOUSE IN A COLD CLIMATE

For low-rise buildings, the heat loss through the ground coupled floor is a significant load component. Studies showed that the current simulation tools give dissimilar results for the ground coupled heat transfer (GCHT) in slab-on-grade constructions. This paper extends the previous comparative work by comparing EnergyPlus and DOE-2.1e results for GCHT based on a slab-on- grade code house in a cold climate. Three GCHT models were used in the study. These models were Winkelmann’s (2002) model in DOE-2.1e, Winkelmann’s model in EnergyPlus and EnergyPlus with its GCHT calculator utility, Slab.