Method for installing a geothermal system, comprising: arranging a drilling equipment, including a support structure and a terminal module, mounted on the support structure; by means of the drilling equipment, drilling the soil in succession along a substantially vertical first tract, a substantially horizontal second tract and a substantially vertical third tract, the first, second and third tracts forming a substantially U-shaped well, the first tract having a surface inlet, where the drilling is started, the third tract having a surface outlet, where the drilling is finished, the well crossing a geothermal zone; arranging a casing in the well, so that the casing extends between the inlet of the first tract and the outlet of the third tract; arranging a heat utilization system, associated with an axial end of the casing; arranging a hydraulic system configured to cause a heat transfer fluid to circulate in the casing, so that the heat transfer fluid will absorb heat from the geothermal formation and will release it at the heat utilization system.

The present disclosure provides an air conditioner comprising: an indoor heat exchanger to exchange heat between underground water and indoor air; an outdoor heat exchanger to exchange heat between underground water and outdoor air; a well; an underground water tank to store underground water; and a water pump to pump water from the well to the underground water tank. The indoor heat exchanger comprises a copper tube running through a row of parallel aluminum panels. Air is sucked by a fan through the indoor heat exchanger in the direction opposite to the underground water flow direction in the copper tube. Air is then passed through an evaporator unit of a compressor to be dehumidified. The underground water, after exchanging heat with the air to reach approximate room temperature, goes through a condensing unit of the compressor to release heat.

The present disclosure provides an air conditioner comprising: an indoor heat exchanger to exchange heat between underground water and indoor air; an outdoor heat exchanger to exchange heat between underground water and outdoor air; a well; an underground water tank to store underground water; and a water pump to pump water from the well to the underground water tank. The indoor heat exchanger comprises a copper tube running through a row of parallel aluminum panels. Air is sucked by a fan through the indoor heat exchanger in the direction opposite to the underground water flow direction in the copper tube. Air is then passed through an evaporator unit of a compressor to be dehumidified. The underground water, after exchanging heat with the air to reach approximate room temperature, goes through a condensing unit of the compressor to release heat.

The present disclosure relates to systems and methods of geothermal energy production using a dual thermosiphon heat exchange system. In one system two working fluids in which a thermosiphon flow is induced to recover thermal energy from depth. The system has a subterranean heat exchanger that is formed into an underground formation by drilling, and which is flooded with a first working fluid. Heat from the formation is transferred into the first working fluid. A recovery loop extends from the earth's surface and into the heat exchanger and carries a second working fluid. Heat from the formation is transferred into the first working fluid, and heat from the first working fluid is transferred into the second working fluid. The heat flow from the formation into the first working fluid and from the first working fluid into the second working fluid causes a thermosiphon flow in the working fluids.

The present disclosure relates to systems and methods of geothermal energy production using a dual thermosiphon heat exchange system. In one system two working fluids in which a thermosiphon flow is induced to recover thermal energy from depth. The system has a subterranean heat exchanger that is formed into an underground formation by drilling, and which is flooded with a first working fluid. Heat from the formation is transferred into the first working fluid. A recovery loop extends from the earth's surface and into the heat exchanger and carries a second working fluid. Heat from the formation is transferred into the first working fluid, and heat from the first working fluid is transferred into the second working fluid. The heat flow from the formation into the first working fluid and from the first working fluid into the second working fluid causes a thermosiphon flow in the working fluids.

An open-loop type heat equalization device utilizes a heat exchange fluid as the carrier to transmit the thermal energy of a natural thermal energy storage body to an temperature differentiation body. The system includes an inclined or vertical heat gaining device that exchanges thermal energy with the natural thermal energy storage body, and first and second pipeline structures through which the fluid flows by convection or auxiliary pumping to the temperature differentiation body. The first pipeline system includes an outwardly-expanded arc-shaped fluid chamber and has a relatively larger volume than the second pipeline system to provide differential resistance to fluid flow at opposite ends of the heating gaining device.

An open-loop type heat equalization device utilizes a heat exchange fluid as the carrier to transmit the thermal energy of a natural thermal energy storage body to an temperature differentiation body. The system includes an inclined or vertical heat gaining device that exchanges thermal energy with the natural thermal energy storage body, and first and second pipeline structures through which the fluid flows by convection or auxiliary pumping to the temperature differentiation body. The first pipeline system includes an outwardly-expanded arc-shaped fluid chamber and has a relatively larger volume than the second pipeline system to provide differential resistance to fluid flow at opposite ends of the heating gaining device.

The disclosure relates to a thermosiphon system operable to consistently maintain the permafrost and active frost layer in a frozen condition to adequately support buildings and other structures. During cooler seasons, the thermosiphon system uses a passive refrigeration cycle to efficiently maintain the frozen layers using the cold air. When the air temperature rises during the warmer months, the system transitions into an active refrigeration mode that uses a refrigeration system to minimize thawing or degradation of the permafrost and active frost layers.

The disclosure relates to a thermosiphon system operable to consistently maintain the permafrost and active frost layer in a frozen condition to adequately support buildings and other structures. During cooler seasons, the thermosiphon system uses a passive refrigeration cycle to efficiently maintain the frozen layers using the cold air. When the air temperature rises during the warmer months, the system transitions into an active refrigeration mode that uses a refrigeration system to minimize thawing or degradation of the permafrost and active frost layers.

A geothermal system includes an outer vessel having a sidewall that is in contact with surrounding ground material. A geothermal pile is disposed within an interior volume of the outer vessel, wherein a first heat conducting liquid at least partially fills a space between an inner surface of the sidewall of the outer vessel and an outer surface of the geothermal pile when in an installed condition. A conduit disposed within an interior space of the geothermal pile conducts a second heat conducting liquid along a flow path within the geothermal pile toward a bottom end thereof and then back to an outlet at a top end thereof. During operation, heat is transferred from the surrounding ground to the second heat conducting liquid via the first heat conducting liquid within the space between the inner surface of the sidewall of the outer vessel and the outer surface of the geothermal pile.