Patent ID: 6708494
Filing Date: 2004-03-23
Classification: F03G,F24S,F24T,Y02E

Abstract:
An apparatus for using geothermal energy and for recovering energy, comprising at least a first conduit through which a working substance is carried downwards into an interior of the Earth into a deep hole, at least one second conduit through which the working substance is carried upwards in a direction of a surface of the Earth, said first and second conduits forming a closed system relative to a soil; at least one throttling region through which the working substance is carried downwards into the interior of the Earth, so that the working substance is also in heat exchange with its surroundings as it is being carried downwards, said throttling region throttling the working substance which is substantially a liquid working substance upstream in a flow direction of said throttling region to a vaporization pressure, so that downstream of said throttling region the working substance is substantially completely vaporizable.