Ground source heat pump (GSHP) system

The temperature 20 m or more below ground is kept constant at 15-18 ℃ year round. This is demonstrated by the fact that ground water feels warm to the touch in winter and cool in the summer. The "Ground Source Heat Pump (GSHP)" system utilizes the stable underground temperature environment as the energy source for air conditioners. Ground-source heat can be used directly on roads and sidewalks to melt snow, for instance. For air conditioners, however, heat pumps are used in many cases to rise the temperature. Heat pumps are "thermal pumps" that discharge heat from low-temperature to high-temperature areas, and is used in air conditioners. At GSJ, we have been conducting demonstration experiments with the GSHP system in our air-conditioner in the first-floor theater room. At the same time, we are striving to convey to our visitors that power saving is possible through the use of GSHP.