A geothermal heat extractor includes a heat transfer fluid and a heat transfer fluid supply conduit. The heat transfer fluid is maintained in the supply conduit in a liquid state at a pressure above its saturation pressure. The geothermal heat extractor further includes a heat transfer fluid return conduit, a geothermal heat source coupled thereto, at least one flow control valve configured to control the flow of the heat transfer fluid from the supply conduit to the return conduit, and an external load coupled to the return conduit. As the heat transfer fluid is provided to the return conduit in the liquid state, the heat transfer fluid vaporizes in the return conduit by heat supplied to the return conduit from the geothermal heat source. The vaporized heat transfer fluid is supplied from the return conduit to the external load.

An air handling system that includes at least one earth-coupled heat exchanger assembly that further includes a first pipe section having an inner diameter and an outer diameter; a second pipe section concentrically surrounding a portion of the first pipe section, wherein the second pipe section includes an inner diameter and an outer diameter, wherein the outer diameter of the first pipe section and the inner diameter of the second pipe section define a space therebetween, and wherein the space between the first pipe section and the second pipe section is evacuated to form an insulating vacuum therein; and a third pipe section concentrically surrounding a portion of the second pipe section, wherein the third pipe section includes an inner diameter and an outer diameter, and wherein the outer diameter of the second pipe and the inner diameter of the third pipe section define a passageway therebetween.

An arrangement for storing thermal energy, including a shaft (1) and at least one tunnel (2), the shaft (1) and the tunnel (2) being in fluid communication with each other. The tunnel (2) includes at least a first (2a), a second (2b), and a third (2c) tunnel section. The second tunnel section (2b) is arranged between and connected to the first (2a) and third (2c) tunnel sections. The second tunnel section (2b) is sealed off at an end (4) connected to the third tunnel section (2c), and the third tunnel section is further connected the shaft (1). The shaft (1) and first (2a) and third (2c) tunnel sections hold fluid for thermal storage. The second tunnel section (2b) is an expansion space should a volume of the fluid expand beyond a volume of the shaft (1) and the first (2a) and third (2c) tunnel sections.

A heat storage arrangement for an intermediate storage of thermal energy. The heat storage arrangement includes at least one heat exchanger element which includes a liquid inlet and a liquid outlet, and at least one heat storage container which includes a heat storage medium. The at least one heat exchanger is stiff and has a liquid non-aqueous heat carrier having a freezing point of below −10° C. flow therein. The at least one heat storage container is flexible and closed, and is arranged to abut on the at least one heat exchanger element so that a heat transfer occurs between the liquid non-aqueous heat carrier and the heat storage medium.

An arrangement for storing thermal energy has at least two tunnels (1a, 1b) for holding a fluid. The tunnels (1a, 1b) are connected to each other by at least one channel (2), such that fluid communication is allowed between the tunnels (1a, 1b). Each of the inner tunnel (1a) and the outer tunnel (1b) is configured as a helix, the inner tunnel (1a) forming an inner helix and the outer tunnel (1b) forming an outer helix.

Methods and systems for producing thermal or electrical power from geothermal wells. Power is produced from a working fluid circulating in a closed loop within a geothermal well. Geothermal steam or brine at depth transfers heat at higher temperature than at the surface to the working fluid. The working fluid is then used to produce power directly or indirectly. The geothermal production fluid may be stimulated through use of gas lifting or submersible pumps to assist in bringing such fluids to the surface or through the use blockers to encourage the downhole steam advection and brine recirculation through the resource in a connective loop. The working fluid may be compatible with existing direct heat or power generation equipment; i.e., water for flash plants or hydrocarbons/refrigerants for binary plants.

A geothermal system is disclosed for cooling a plurality of computer processing devices which includes a first heat exchanger in thermal communication with a plurality of computer processing devices, wherein the first heat exchanger includes a heat absorbing fluid structured to receive heat from the plurality of computer processing devices. The geothermal system further includes a chiller in selective flow communication with the first heat exchanger, wherein the chiller is structured to selectively receive at least a portion of the heat absorbing fluid. The geothermal system further includes a geothermal field structured to exchange heat in the heat absorbing fluid with a geological heat sink.

The present invention relates to a U-type piping capable of thermal energy transmission with each other in a radiate arrangement, wherein the piping segments of the U-type fluid piping inlet end and/or outlet end of the U-type piping capable of thermal energy transmission with each other in the radiate arrangement are directly made of thermal insulating materials, or a thermal insulating structure is installed between the inlet end and the outlet end, and a thermal conductive body made of thermal conductive material is further installed thereof, so as to prevent thermal energy loss because of thermal conduction by temperature difference between adjacent piping segments with temperature difference of the inlet end and the outlet end installed on the same side when fluid with temperature difference passing through.

A system for power generation from renewable energy, comprising a heat exchanger within a subterranean formation. The heat exchanger comprises a casing at an upper portion of the wellbore, a tubular member extending through the casing to a lower portion of the wellbore, and fins in fluid communication with the casing and with the tubular member, the fins each comprising a volume defined by surfaces of the subterranean formation and configured to receive a fluid from the casing. Related longitudinal finned heat exchangers and methods of storing thermal energy within a subterranean formation are also disclosed.

A geo-energy production method for extracting thermal energy from a reservoir formation. A production well extracts brine from the reservoir formation. A plurality of working fluid injection (“WFI”) wells may be arranged proximate to the production well to at least partially circumscribe the production well. A plurality of brine production (“BP”) wells may be arranged in a vicinity of the WFI wells to at least partially circumscribe the WFI wells. A working fluid is injected into the WFI wells to help drive a flow of the brine up through the production and BP wells, together with at least a portion of the injected working fluid. Parasitic-load time-shifting and to storing of excess solar thermal energy may also be performed.