An economical ground heat exchanger system uses water-filled membrane liners in cylindrical augured holes. A submersible pump in a drain reservoir is shared by multiple boreholes. Thermal connection with a building or industrial process occurs through a heat exchanger thermally coupled to the reservoir. The pump sends water tempered by the heat exchanger to the water-filled holes, where it exchanges heat with the ground before overflowing through gravity drain piping back to the reservoir for continued recirculation. Heat transfer with the ground occurs through thermal contact between the water, the membrane liners, and earth supporting the liners. Optional raised borehole support rims maintain an above grade water level and allow removed soil to be re-used as a berm or planter over manifold pipes that connect the system components, thus eliminating the cost of trenching for the manifold pipes.

A geothermal heat exchanger, a geothermal heat arrangement and to a method in connection with a geothermal heat arrangement. The geothermal heat exchanger includes a piping arrangement having a rise pipe and a drain pipe, and a first pump arranged to the piping arrangement. The rise pipe and drain pipe are arranged in fluid communication with each other for circulating the primary working fluid. The rise pipe is provided with a first thermal insulation surrounding the rise pipe along at least part of the length of the rise pipe and the first pump is arranged to circulate the primary working fluid in a direction towards a lower end of the rise pump.

The invention is provided with a support tube (101) and an inner tube (103) installed inside thereof, the diameter differentiation between the inner diameter of the support tube (101) and the outer diameter of the inner tube (103) is formed with a partitioned space for constituting a fluid path, the upper tube of the support tube (101) is installed with an electric energy application device assembly (108), and through the fluid pump (105) serially installed on the heat transfer fluid path to pump the heat transfer fluid to form a closed recycling flow, and through passing the support tube (101) of the mentioned closed recycling heat transfer fluid path and the exposed portion at the outer surface of the relevant structure, thereby enabling to perform temperature equalizing operation with the external gaseous or solid or liquid environment and/or the soil or liquid of the shallow ground natural thermal energy body.

The present invention relates to a vertical relay fluid storage barrel installed with fluid inlet and fluid outlet for whole or in part placement into natural thermal energy body in vertical or downward oblique manner, wherein a thermal energy exchanger is installed inside the relay fluid storage barrel temporarily storing thermal conductive fluid for external flow, the thermal energy exchanger is installed with fluid piping for the thermal conductive fluid passing through, to perform heat exchange with the fluid in the relay fluid storage barrel, and the fluid in the relay fluid storage barrel performs heat exchange with the natural thermal energy body.

A thermal-energy exchange and storage system has a borefield with a core zone and at least one capacity expansion zone. Each of the core zone and the at least one capacity expansion zone have a plurality of boreholes. The at least one capacity expansion zone is positioned outwards from and encircling the core zone and each additional capacity expansion zone is positioned outwards from and encircling the previous capacity expansion zone. A heat source is provided in fluid communication with a heat exchanger. An injection system circulates an operating fluid. The injection system has at least one U-tube installed within the plurality of boreholes and operating fluid is circulated between the at least one U-tube and the heat exchanger for transferring heat from the heat source. An extraction system is provided for extracting heat stored in the system for use in an infrastructure.

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 invention relates to a thermal energy storage with at least one thermal energy storage volume. The thermal energy storage comprises at least one primary borehole extending from ground level to a first predetermined depth in a rock body; at least one set of secondary boreholes located around the at least one primary borehole; and at least an upper and a lower fracture plane extending in a radial and/or oblique plane from the at least one primary borehole towards adjacent secondary boreholes. At least one fracture plane permits a hydraulic flow between at least one of the secondary boreholes and the primary borehole. Each thermal energy storage volume is defined by one set of secondary boreholes and its upper and lower fracture planes. The set of secondary boreholes diverge away from the at least one primary borehole at each fractured plane level, without intersecting the at least one primary borehole.

A helical pile including a heat exchanger is described. The pile is formed from a lead section and one or more extension sections. The interior of the lead and extension sections are hollow and form a heat exchanger cavity. At the lower end of the lead section is a helical blade. Rotation of the lead section causes the helical blade to screw into the ground, thus pulling the lead section downward. Extension sections are added to the lead section and the pile is rotated until it is installed to a desired depth. The pile includes an inflow tube extending a predetermined distance into the heat exchanger cavity and an outflow port connected with the heat exchanger cavity. In operation, a heat carrying fluid is pumped into the inflow tube from a heat source or sink, for example, a heat pump for a building heating and cooling system. The fluid exits the tube at a point near the bottom of the heat exchanger cavity. The fluid flows upward through the heat exchange cavity and exchanges heat with the surrounding soil. The fluid flows out through the outflow port and back to the heat source or sink.

A method for calculating ground storage device temperatures for operating a geothermal facility with a circulation system by means of at least one geothermal heat exchanger or an energy pile with inflow and outflow lines leading to the geothermal heat exchanger or energy pile. The underground temperature in the ground storage device and/or the temperatures on the inflow and outflow lines are measured. The method includes the following steps: designing a ground storage device model (2) for converting the measured temperature variations into dynamic energy flows in the ground storage device; designing an energy flow model (3) based on statistically determined models and influencing variables relating to heat and cold; and calculating the future temperature variations (5) in the ground storage device using the energy flow model (3) and the ground storage device model (2).

An open-loop type heat equalization device utilizing the heat exchange fluid as the carrier to transmit the thermal energy of a natural thermal energy storage body to the temperature differentiation body at the exterior, and wherein the fluid inlet/outlet port (4011) of the pipeline structure (401) and a fluid inlet/outlet port (3012) of a pipeline structure (301) is often structured as an open state, and the space limiting and flow direction guiding structure of the heat exchange fluid (104) is nod provided, the main features of the present invention includes one or more than one of the 1) to 7) structural devices including: 1) installing the space limiting and flow direction guiding structure (201) of the heat exchange fluid (104) between the fluid inlet/outlet port (4011) of the pipeline structure (401) and a fluid inlet/outlet port (3012) of a pipeline structure (301) for allowing the heat exchange fluid (104) with thermal energy to be released from the fluid inlet/outlet port (4011) of the pipeline structure (401), and a part thereof is returned to the fluid inlet/outlet port (3012) of the pipeline structure (301) for flowing back to the heat gaining device (101); 2) installing an outward-expanding arc-shaped fluid chamber (108) at one or more than one of turning locations of the open-loop flowpath configured by the heat gaining device (101), the pipeline structure (301), the space limiting and flow direction guiding structure (201) and the pipeline structure (401) for temporally storing a part of the heat exchange fluid (104) and moderating the flow speed of the heat exchange fluid (104) with thermal energy for reducing the flow damping of the flowpath to the heat exchange fluid (104); 3) installing an auxiliary heating/cooling device (115); 4) installing an auxiliary fluid pump (107); 5) installing a heat exchange fluid temperature sensing device (TS201); 6) installing an environment temperature sensing device (TS202); and 7): installing an electric power control unit (ECU200).