Abstract
The influence of snow cover on the performance of the heat pump coupled with the horizontal ground heat exchanger (HGHE) is investigated in this Paper. Climatological data of Kentville (NS, Canada) for winter 1983/84 is used in computer calculations. In general, snow cover improves the coefficient of performance (COP) of ground heat pumps. For a stable and thick snow cover it is beneficial to bury a coil very near the soil surface. For unstable snow conditions, deeper buried coils are recommended to reduce a vigorous variation of soil temperature. Freezing of soil moisture around the coil has a positive effect on the COP due to a very high value of released latent heat of freezing of soil moisture. It appears that the HGHE does not create any risk of ecological damage to garden plants and soil biology in the subsurface layer (down to 0.10 m).
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