抄録
The objective of this paper is to describe the performance of Ground Source Heat Pump (GSHP) system for heating and ventilation applied in an actual low energy house. Recently, in Japan, GSHP systems have been introduced, however only few of them have been demonstrated their efficiency. Firstly we investigated the performance of GSHP system which is applied to the actual low energy house of cold region by actual inspection. Secondly, ventilation system with earth tube was observed its efficiency. From the inspection, the system showed satisfied performance in terms of energy conservation.