Ground heat exchanger and wind turbine

A pile, extending above and below ground level, having at an upper portion a wind turbine for generating an electrical current and at a lower portion below ground, housing a geothermal system for transferring heat to or from the ground wherein a portion of the pile below ground with diameter d3 provides a means of stabilizing and anchoring the portion of the pile above ground wherein the section of the pile that extends below ground level housing a geothermal system is disposed within an outer vessel having a diameter d2, the outer vessel having a sidewall with an outer surface and with an inner surface, the inner surface defining an interior volume of the outer vessel;

• said geothermal pile having a diameter d3 that is less than d2 and being disposed within the interior volume when the geothermal system is in the installed condition;
• a volume of water filling a space between the inner surface of the sidewall of the outer vessel and an outer surface of the geothermal pile when the geothermal system is in the installed condition;
• a fill material packed around the outer surface of the outer vessel and extending to a depth L4 below an open upper top of the outer vessel;
• and means for adding water to the volume of water such that, during use, a flow of water overflows the open upper top of the outer vessel and enters into the fill material;
• wherein the volume of water is a first heat conducting liquid and the geothermal pile comprises a conduit contained within an interior space thereof for conducting a second heat conducting liquid into the geothermal pile at a top end thereof and along a flow path within the geothermal pile toward a bottom end of the geothermal pile and then back to an outlet at the top end thereof, and wherein during operation heat is transferred from the surrounding ground to the sidewall of the outer vessel via the fill material.