An extraplanetary habitat system includes a habitat located on a site including a layer of regolith material and one or more heat-generating systems located in the habitat. A heat exchanger is operably connected to the habitat. The heat exchanger is located beneath the layer of regolith material and is configured to conduct the heat from the habitat into the layer of regolith material. A method of cooling one or more heat generating components of an extraplanetary habitat includes directing a flow of fluid from the habitat to a heat exchanger located beneath a layer of regolith material, exchanging thermal energy between the flow of fluid and the regolith material, thereby cooling the volume of fluid, and directing the flow of fluid from the heat exchanger to the habitat, thus cooling the habitat.

A geothermal heat delivery system supplies geothermal heat for various residential, surface heating applications, including heating driveways, paths, sidewalks, homes, roofs, swimming pools, and commercial applications, including heating roadways, parkways, highways, airport runways, parking lots and sidewalks. The geothermal heat delivery system includes a series of heat pipes that are used to provide geothermal heat from a borehole to a structure or a surface, which can for example, melt precipitation on a road, driveway or roof, without the use of a ground source heat pump.

This air conditioner unit comprises a heat exchanger, but does not comprise any device that forcibly passes air to the heat exchanger. The heat exchanger can be installed in a partition part that demarcates a target space from areas outside of the target space, and is configured such that an airflow in contact with the heat exchanger can pass through. The heat exchanger is configured so that a fluid can flow through the interior thereof. Due to a fluid having a temperature different from the outside air temperature flowing through the heat exchanger, the temperature of the airflow flowing from outside of the target space into the target space is changed, and the air inside the target space is conditioned by the airflow of which the temperature was changed.

A medium-deep non-interference geothermal heating system based on loose siltstone geology includes a water return pipe and a water inlet pipe. The system further includes a differential pressure overflow pipe, a gauge, a differential pressure controller, a first high area water return pipe, a first water return pipe, a third water return pipe, a bypass pipe, a high area water supply pipe, a second high area water return pipe, a geothermal well water return pipe, a geothermal well water supply pipe, a heat pump unit, a second water return pipe, a water supply pipe, a geothermal well water pump, a first geothermal well water supply pipe, a first geothermal well water return pipe, a second geothermal well water return pipe, a second geothermal well water supply pipe, a geothermal wellhead device, and a geothermal well that are combined for use.

Methods and systems for controlling temperature and humidity within a space in a building. Outdoor air and return air from the space are passed through particular equipment in a particular order. Equipment includes a secondary direct-expansion refrigeration circuit, a recovery wheel, a primary cooling coil or direct-expansion refrigeration circuit, secondary circuit coils, and a dehumidification wheel. Various embodiments include modulating the secondary circuit compressor to adjust reheat capacity at the secondary circuit condenser coil, a geothermal direct-expansion refrigeration circuit, a variable refrigerant flow subsystem, fan coil units, multiple zones, a dedicated outdoor air supply subsystem, an evaporative cooler, supplemental outdoor air, or a combination thereof. In some embodiments, supply air passes first through the recovery wheel, then through the primary cooling coil, then through the dehumidification wheel, and then to the space. Further, in some embodiments, exhaust air passes through the dehumidification wheel, and then through the recovery wheel.

A method of operating a heating and cooling system includes (1) providing a heating and/or cooling apparatus having first and second heat exchangers, (2) providing a conduit module modularly coupled to the heating and/or cooling apparatus and adapted to be coupled to a plurality of fluid circuits for heating or cooling loads, and (3) operating a control system configured to operate the conduit module in a heating or cooling mode. The conduit module is positioned between the heating and/or cooling apparatus and the plurality of fluid circuits. The conduit module includes first, second, and third supply conduits and first, second, and third return conduits, to convey first, second, and source fluids to and from respective first, second, and source fluid circuits. The conduit module includes first, second, third, and fourth three-way valves to selectively regulate flow of the first, second, and source fluids.

Disclosed herein is a heat recovery system, in accordance with some embodiments. Accordingly, the heat recovery system may include a chiller, primary heat exchangers, primary pumps, secondary heat exchangers, and secondary pumps. Further, the chiller is configured for providing primary fluid and secondary fluid. Further, the primary heat exchangers are configured for exchanging a first amount of heat between the primary fluid and primary mediums creating a heat deficit and/or a heat excess in the primary mediums. Further, the primary pumps are configured for circulating the primary fluid between the chiller and the primary heat exchangers. Further, the secondary heat exchangers are configured for exchanging a second amount of heat between the secondary fluid and secondary mediums. Further, the secondary pumps are configured for circulating the secondary fluid between the chiller and the secondary heat exchangers.

A geothermal system includes: at least two geothermal holes (1) formed in the ground; a return water circulation tube (10) for returning underground water of the geothermal holes; a water collection and supply well (20) for collecting and then supplying the underground water returned by the return water circulation tube; at least one heat pump (30) for generating heat for cooling and heating, by using, as a heat source, the heat of the underground water supplied by the water collection and supply well; and a supply tube (40) which is an underground water supply means for supplying, to the geothermal holes, the underground water that supplied heat to the heat pump.

Geothermal energy is increasingly recognized as a useful energy source for both industrial and residential purposes. Disclosed herein are units for subterranean heat exchange comprising a polymer block with ‘mini-channels’ adapted and/or sized for highly efficient heat exchange. In some embodiments such units can, as needed, be manufactured off site, spooled for transport, and conveniently installed in boreholes. Other arrangements are also described for conduits located within a borehole for heat exchange, without a polymer block. Also disclosed are geothermal heat exchange systems including those that employ such units, for example with direct expansion of a two-phase heat-exchange fluid such as carbon dioxide.

Disclosed herein is a heat recovery system, in accordance with some embodiments. Accordingly, the heat recovery system may include a chiller, primary heat exchangers, primary pumps, secondary heat exchangers, and secondary pumps. Further, the chiller is configured for providing primary fluid and secondary fluid. Further, the primary heat exchangers are configured for exchanging a first amount of heat between the primary fluid and primary mediums creating a heat deficit and/or a heat excess in the primary mediums. Further, the primary pumps are configured for circulating the primary fluid between the chiller and the primary heat exchangers. Further, the secondary heat exchangers are configured for exchanging a second amount of heat between the secondary fluid and secondary mediums. Further, the secondary pumps are configured for circulating the secondary fluid between the chiller and the secondary heat exchangers.