understanding geothermal 

Geothermal energy is distinguished from its' origin.  

 

The energy that flows from the internal core of the earth to the surface, is called deep geothermal energy.  It is used for electricity production, district heating, greenhouse heating, thermal resorts, spa's and others.

 

The energy stored at the earth's bark, is called shallow geothermal energy.  That is the heat absorbed by the Sun.  It is mainly used for heating and cooling residential and commercial buildings.

 

The thermal energy that is mechanically transferred from the surface and stored underneath the earth's bark is called interseasonal heat storage.  This energy is used for heating residential and commercial buildings, mainly passive houses or near to zero energy buildings; it is usually combined with a geothermal heat pump.

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