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411 results about "Geothermal heating" patented technology
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Geothermal heating is the direct use of geothermal energy for some heating applications. Humans have taken advantage of geothermal heat this way since the Paleolithic era. Approximately seventy countries made direct use of a total of 270 PJ of geothermal heating in 2004. As of 2007, 28 GW of geothermal heating capacity is installed around the world, satisfying 0.07% of global primary energy consumption. Thermal efficiency is high since no energy conversion is needed, but capacity factors tend to be low (around 20%) since the heat is mostly needed in the winter.
Heat Exchange Using Underground Water System
InactiveUS20120255706A1Heat recovery systemsRecuperative heat exchangersGround temperatureThermal energy
In this disclosure, we have the following examples and teachings: A geothermal heating and or cooling system is introduced here which is deriving cooled or heated liquid via existing infrastructure of water pipe system in use for the houses and buildings, e.g. from the city water system or pipe network, or from the well water (or lake or river or sea or ocean or the like), piped or channeled to the buildings, through pipes or conduits or channels or closed enclosures. The system derives cooled liquid from existing underground infrastructure, including or for example, below-ground water pipes. The system gains a temperature advantage from the geothermal ground temperature, which remains roughly constant throughout the year in most regions. The system uses (e.g.) a storage tank to contain a working fluid and store thermal energy. In one example, multiple chambers and / or tanks are used for water heaters or coolers, with different connection and flow mechanisms. Other examples and designs are also discussed and shown here.
Owner:BTPATENT
Hybrid heating and cooling system
InactiveUS20060288724A1Improve the level ofImprove efficiencyMechanical apparatusHeat pumpsGeothermal heatingControl system
A heat and cooling system having an indoor air coil subcircuit, an outdoor air coil subcircuit, a geothermal subcircuit, and a control system for selectively operating the system in air-to-air heating, air-to-air cooling, geothermal heating, air-to-air defrost (optionally) and geothermal defrost modes. The various subcircuits may be connected to one another in parallel. The heating and cooling system may include a control system that permits refrigerant to be selectively routed through any two of the heat exchangers to provide the various modes of operation. In one embodiment, the control system may generally include a circuit having a single reversing valve, a plurality of check valves, a plurality of solenoid valves and a plurality of expansion devices.
Owner:GEOFURNACE DEV
System and method of capturing geothermal heat from within a drilled well to generate electricity
ActiveUS8616000B2Increase surface areaHeat pumpsOther heat production devicesElectricityGeothermal heating
Owner:PARDEV
Advanced Direct Exchange Geothermal Heating/Cooling System Design
InactiveUS20080016894A1Shorten the timeEasy maintenanceDomestic cooling apparatusOther heat production devicesLiquid lineGeothermal heating
A direct expansion / direct exchange (“DX”) geothermal heating / cooling system having a plurality of pin restrictors positioned in housing units at ground accessible locations. The pin restrictors are preferably located near the compressor unit and on the field side of the distributor. Refrigerant is substantially equally distributed by a distributor to substantially equally sized line sets in the DX system with multiple wells. The distributors are place in either horizontal or vertical inclinations with the pin restrictors situated on the field side of the distributor in each individual liquid refrigerant transport line. A cut-off ball valve is located within the liquid refrigerant transport line on each side of the respective pin restrictor housing units. A filter / dryer is place within the same liquid refrigerant transport line segment as the pin restrictor(s) with a refrigerant flow shut-off valve being situated on each side of the liquid line segment containing the filter / dryer and the distributor.
Owner:EARTH TO AIR SYST
Closed loop energy production from geothermal reservoirs
InactiveUS8708046B2Other heat production devicesGeothermal energy generationGeothermal heatingWorking fluid
Owner:CONOCOPHILLIPS CO
Storing carbon dioxide and producing methane and geothermal energy from deep saline aquifers
ActiveUS9121259B2High priceOther heat production devicesGeothermal energy generationSaline waterGeothermal heating
A novel idea involving the coupling of CO2 geological storage with methane and / or heat production (geothermal energy) from geopressured-geothermal aquifers is described herein. The production of energy from the extracted brine offsets the cost of capture, pressurization, and injection and the subsequent injection of brine containing carbon dioxide back into the aquifer. Calculations described in the present invention indicate that this offset would reduce the cost of carbon capture and sequestration (CCS) to a point that CCS could survive in a competitive market environment without subsidies or a price on carbon.
Owner:BOARD OF RGT THE UNIV OF TEXAS SYST
System and method of capturing geothermal heat from within a drilled well to generate electricity
ActiveUS20090320475A1Increase surface areaHeat pumpsOther heat production devicesElectricityGeothermal heating
A closed-loop, solid-state system generates electricity from geothermal heat from a well by flow of heat, without needing large quantities of water to conduct heat from the ground. The present invention contemplates uses for depleted oil or gas wells and newly drilled wells to generate electricity in an environmentally-friendly method. Geothermal heat is conducted from the Earth to a heat exchanging element to heat the contents of pipes. The pipes are insulated between the bottom of the well and the surface to minimize heat dissipation as the heated contents of the pipes travel to the surface.
Owner:PARDEV
Storing Carbon Dioxide and Producing Methane and Geothermal Energy from Deep Saline Aquifers
ActiveUS20120038174A1High priceEconomically viableOther heat production devicesGeothermal energy generationSaline waterGeothermal heating
A novel idea involving the coupling of CO2 geological storage with methane and / or heat production (geothermal energy) from geopressured-geothermal aquifers is described herein. The production of energy from the extracted brine offsets the cost of capture, pressurization, and injection and the subsequent injection of brine containing carbon dioxide back into the aquifer. Calculations described in the present invention indicate that this offset would reduce the cost of carbon capture and sequestration (CCS) to a point that CCS could survive in a competitive market environment without subsidies or a price on carbon.
Owner:BOARD OF RGT THE UNIV OF TEXAS SYST
Self contained water-to-water heat pump
InactiveUS20100064710A1Less-expensive to implementPreventing coolant freezingHeat pumpsHeat recovery systemsGeothermal heatingEngineering
A self-contained water-to-water heat transfer system is provided that mixes hot water produced by a heat exchange with cold output fluid expelled from the heat pump to make source fluid. More specifically, in order to reduce the fluid flow rate required within a heat pump and substantially prevent freezing of evaporator coils within the heat pump, source water fed into the heat pump is taken from a mixture of the output hot water that was generated in the heat pump and the cool water exiting the heat pump. The system alleviates the need to employ a ground loop outside of a structure that is required by traditional geothermal heating systems.
Owner:SLAUGHTER JAMES WILLIAM
Indoor geothermal heating structure using capillary network and phase change heat storage material
InactiveCN102269443AImprove heat storage capacitySolve the problem of slow heatingLighting and heating apparatusEnergy efficient heating/coolingCapillary networkInsulation layer
The invention discloses an indoor geothermal heating structure utilizing a capillary network and a phase-change thermal storage material, which belongs to the technical field of solar building heating. The structure includes a floor decoration layer, an upper phase change material, a capillary grid, a lower phase change material, a reflection film, an insulation layer and a floor base layer from top to bottom. The floor decoration layer is supported by dragon frames laid on the insulation layer, the dragon frames pass through the tube gaps of capillary grids, and the phase change material layers are arranged between adjacent dragon frames. The hot water from the low-temperature heat source exchanges heat with the upper and lower phase-change materials in the capillary, and supplies heat to the room through the floor decoration layer; at night, the phase-change material solidifies and releases heat to supply heat to the room through the floor decoration layer. The indoor geothermal heating structure of this capillary network and phase change heat storage material has the characteristics of large heat exchange area, uniform temperature, fast start-up, less space occupation, more flexible layout, and convenient installation. The indoor temperature is uniform, and the indoor thermal comfort is good. Wide application prospects and promotion value.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Hydrate reservoir developing well group structure and method using geothermal energy
ActiveCN107420083AImprove heat transfer efficiencyReduce heat injection costsConstructionsInsulationGeothermal heatingDecomposition
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Hybrid heating and cooling system
InactiveUS7228696B2Improve the level ofImprove efficiencyMechanical apparatusHeat pumpsGeothermal heatingControl system
Owner:GEOFURNACE DEV
Direct exchange geothermal heating/cooling system sub-surface tubing installation with supplemental sub-surface tubing configuration
InactiveUS7856839B2InhibitionImprove thermal conductivityHeat pumpsDomestic cooling apparatusGeothermal heatingRefrigerant
A sub-surface tubing arrangement for use in a direct exchange (DX) geothermal heating / cooling system includes a primary sub-surface liquid refrigerant transport line, a primary sub-surface vapor refrigerant transport line, at least one sub-surface heat exchange refrigerant transport line functionally connecting the primary sub-surface liquid refrigerant transport line to the primary sub-surface vapor refrigerant transport line, and either vertical or horizontal supplemental sub-surface refrigerant line connected to one of the primary sub-surface liquid or vapor refrigerant transport lines.
Owner:EARTH TO AIR SYST
Geothermal Exchange System Incorporating A Thermally Superconducting Medium
InactiveUS20070068184A1Extended service lifeReduce installation costsHeat pumpsCollector components/accessoriesElectrical conductorGeothermal heating
A geothermal heating and cooling system is thermally coupleable to a ground coil formed from a thermal superconductor material. The system includes a heat intensification circuit, a thermal superconductor heat exchange coil and a thermal switch coupling the intensifying heat exchanger to the superconductor heat exchanger, and a thermostat controller connected to the thermal switch and intensifying heat exchanger. The system employs a high thermal transfer superconductor to efficiently move heat to and from the earth source for the purpose of heating and cooling. The system operates in cooling and heating modes by controlling the thermal switches and activating the heat intensification circuit in response to the difference between a set point and a measured temperature. Heat can be transferred to and from the superconductor heat exchange coil through various air and liquid exchange subsystems including fans, direct and indirect liquid heat exchange.
Owner:FREE ENERGY SOLUTIONS
Advanced DX System Design Improvements
InactiveUS20090095442A1Reduced surface area requirementHigh work pressureMechanical apparatusHeat pumpsGeothermal heatingSystems design
A direct exchange geothermal heating / cooling system has a self-adjusting expansion valve and a bypass flow path to improve efficiency when the system operates in a heating mode. The expansion valve may operate based solely on pressure from the vapor refrigerant transport line. The system may alternatively include an accumulator, a compressor, and an oil separator, wherein an oil return line returns oil from the oil separator to the accumulator. Additionally, a direct exchange geothermal heating / cooling system may include a hot-gas bypass valve for diverting heated vapor refrigerant to the liquid refrigerant line. Finally, a direct exchange geothermal heating / cooling system having a sub-surface heat exchanger extending to a depth of at least 300 feet may use a refrigerant particularly suited for such an application.
Owner:EARTH TO AIR SYST
All-weather energy and water production via steam-enhanced vortex tower
InactiveUS7154190B2Size and specific costLow priceWind motor with solar radiationEngine fuctionsGeothermal heatingWater production
Owner:KAPLOUN SOLOMON
Vertically oriented direct exchange/geothermal heating/cooling system sub-surface tubing installation means
InactiveUS7401641B1Improve and enhanceLess cumbersomeCollector components/accessoriesDrilling rodsFluid transportAbove ground
A system for installing sub-surface fluid transport tubing and pressure testing coupling seals in a vertically oriented geothermal heating / cooling system installation, and particularly in a direct exchange system installation, includes providing an elevated containment area, that has a confined space opening, supported by extensions / poles, within which opening an upper portion of the fluid transport tubing segment, to be installed within the borehole, can be positioned and contained. The system further includes pressure testing above-ground segmental coupling seals, by using moderate gas pressure applied via temporary gas hose and plug connections to respective ends of the operatively connected fluid transport line set.
Owner:EARTH TO AIR SYST
Geothermal exchange system incorporating a thermally superconducting medium
InactiveUS7451612B2Speed up heat exchangeCollector components/accessoriesHeat pumpsGeothermal heatingEngineering
A geothermal heating and cooling system is thermally coupleable to a ground coil formed from a thermal superconductor material. The system includes a heat intensification circuit, a thermal superconductor heat exchange coil and a thermal switch coupling the intensifying heat exchanger to the superconductor heat exchanger, and a thermostat controller connected to the thermal switch and intensifying heat exchanger. The system employs a high thermal transfer superconductor to efficiently move heat to and from the earth source for the purpose of heating and cooling. The system operates in cooling and heating modes by controlling the thermal switches and activating the heat intensification circuit in response to the difference between a set point and a measured temperature. Heat can be transferred to and from the superconductor heat exchange coil through various air and liquid exchange subsystems including fans, direct and indirect liquid heat exchange.
Owner:FREE ENERGY SOLUTIONS
Coal-heat co-mining method based on high ground temperature mine
ActiveCN109057796AChange structureTo relieve pressureLighting and heating apparatusUnderground miningGround temperatureWater source heat pump
The invention discloses a coal-heat co-mining method based on a high ground temperature mine. The method uses a goaf formed after coal mining as a reservoir; at the same time, a geothermal well is excavated into a thermal reservoir in a roadway. Hot water is pumped out through a geothermal exploitation well, and cold water is recharged through a geothermal recharging well; at the same time, a WSHP(Water Source Heat Pump) heat exchange station and a wind source heat pump station are built on surface to recover heat energy in the hot water and the hot wind. Through the method, coal mining can effectively change structure of a underground rock stratum, and exert a certain pressure relief and anti-reflection effect on the thermal reservoir, thereby improving heat extraction efficiency of thegeothermal well; by the method, the waste high ground temperature mine can also be reused for reproduction; the extracted geothermal resources are energy-saving and emission-reducing; and the geothermal well is excavated in the mine, which greatly reduces mining depth of the geothermal well, reduces drilling difficulty, shortens drilling cycle and reduces mining cost.
Owner:CHINA UNIV OF MINING & TECH
Energy generation from waste heat using the carbon carrier thermodynamic cycle
The invention relates to a method is provided which allows the generation of high temperatures, e.g. above 120° C. and maximum 200° C. and low temperatures, e.g. below minimum minus 20° C., from waste heat or geothermal heat or similar heat sources having a temperature of between 20 and 70° C. The method may use essentially pure carbon dioxide as primary working fluid in an essentially closed loop as described in previous disclosures, alternatively low boiling solvents are employed. The common feature of different embodiments is that the system operates at least partly, specifically in the absorber or cold side of the process, below atmospheric pressure (1 bar). In the method a heat pump or heat transformer is realized within the technical boundaries mentioned above. The invention also relates to the use of the method in combination with a district heating system for elevating the temperature of the district heating medium or for electricity production on demand.
Owner:CLIMEON AB
DX System with Filtered Suction Line, Low Superheat, and Oil Provisions
ActiveUS20090120120A1Maintain and increase system operational efficiencyImprove efficiencyHeat pumpsDomestic cooling apparatusGeothermal heatingAs Directed
A heating / cooling system has improved operating efficiencies due to low superheat provisions and a specially configured compressor oil return. For certain systems, such as direct exchange geothermal heating / cooling applications having sub-surface heat exchanges extending at least 100 feet below the surface and using R-410A refrigerant, a specific compressor oil may be used to further improve efficiency.
Owner:EARTH TO AIR SYST
Geothermal apparatus
InactiveCN101939598AEfficient recyclingHeat pumpsOther heat production devicesRecovery methodGeothermal heating
This technical target aims to provide a novel geothermal apparatus which is made more economical and practical by rationalizing the recovery method of a geothermal energy. The geothermal apparatus is characterized in that a geothermal energy recovering pipe is made to have a double-pipe structure, in which the internal space of an inner pipe and the space between an outer pipe and the inner pipe are used as an outgoing passage or an incoming passage for a heat medium, in that the inner pipe and the outer pipe are connected to a heat utilizing device thereby to form a circulation passage, which is filled with the heat medium, in that the outgoing passage and the incoming passage of the heat medium are thermally insulated from each other, and in that the heat medium of a relatively high pressure of saturated vapor is adopted to transfer the heat as a latent heat. The circulation rate of the heat medium can be reduced to make the scale of the entire apparatus compact, so that the initial cost and the running cost can be reduced. By filling the heat medium of the high pressure of saturated vapor, moreover, the geothermal energy can be efficiently recovered even in case the geothermal energy recovering pipe is deeply buried.
Owner:HACHIYO ENG CO LTD
Multi-Faceted Designs for a Direct Exchange Geothermal Heating/Cooling System
ActiveUS20080173425A1Improve heat transfer performanceDecrease overall system operational efficiency levelHeat pumpsOther heat production devicesGeothermal heatingAir handler
A direct exchange heating / cooling system with at least one of a reduced compressor size, with a 500 psi high pressure cut-off switch, with a 98% efficient oil separator, with extra oil, operating at a higher pressure than an R-22 system, with receiver design parameters for efficiency and fox capacity, with geothermal heat exchange line set design parameters, with special heating / cooling expansion device sizing and design, with a specially sized air handler, and with a vapor line pre-heater.
Owner:WIGGS B RYLAND
Geothermal pipe weight
InactiveUS7213649B2Curvature may be reduced or even eliminatedWork hardHeat pumpsDrilling rodsGeothermal heatingTremie
A method and apparatus for adding rigidity and weight to the piping used in geothermal wells for ground-source heat pumps enhances insertion of the piping into the wells. The weight used must be approved by appropriate organizations such as the DNR, NSF, and / or EPA, or similar, for contact with the ground water. Concrete and coated iron or steel are examples of such weights. A system for assembling the pipes, weight, and a tremie pipe for insertion is disclosed. The weighting system may also help maintain straightness in the geothermal piping for ease of inserting the piping into the vertical well.
Owner:MCNAIR EDWARD F +1
DX system with filtered suction line, low superheat, and oil provisions
ActiveUS8082751B2Improve efficiencyEasy maintenanceHeat pumpsCompression machines with reversible cycleAs DirectedGeothermal heating
Owner:EARTH TO AIR SYST
Large-diameter steel sleeve heat exchange device capable of extracting geothermal energy
InactiveCN104374121AImprove heat transfer efficiencySave land areaHeat pumpsOther heat production devicesGeothermal heatingEngineering
The invention relates to a large-diameter steel sleeve heat exchange device capable of extracting the geothermal energy, and belongs to the technical field of heating ventilation air conditioners capable of saving energy and reducing emission. The device mainly includes a ground source heat exchange well composed of a steel sleeve with the bottom being sealed, a PE inner tube, a filtering device, an impurity precipitation groove, a heat insulating plate and a water circulating flow diversion device. According to the connection relation, the steel sleeve is inserted into the ground, the ground source heat pump heat source side returned water is communicated with an upper end opening of the steel sleeve, and the PE inner tube is arranged in the steel sleeve; the filtering device is fixed inside the bottommost end of the PE inner tube; the impurity precipitation groove is formed in the bottommost end of the steel sleeve well; the heat insulating plate wraps the PE inner tube; the water circulating flow diversion device is arranged at a water inlet of the well and connected to the PE inner tube. By means of the large-diameter steel sleeve heat exchange device capable of extracting the geothermal energy, the problem that a soil source heat pump system is large in occupied space is solved, and the heat exchange amount of a single-opening ground source well is greatly increased.
Owner:BEIJING ZHONGKE HUAYU ENERGY TECH DEV
Geothermal heating and/or cooling apparatus and method of using same
InactiveUS20050121169A1Collector components/accessoriesOther heat production devicesGeothermal heatingEngineering
A geothermal apparatus comprising a first pipe for receiving a heat exchange liquid therein and a second pipe for receiving the heat exchange liquid therein and having a web integrally connected to each of the first and second pipes, between such pipes for holding the second pipe at a predetermined distance from the first pipe. This pair of pipes, which are integrally connected, are installed in the ground in a hole or bore and then are connected to a heat exchanger having a fluid inlet connected to one of the pipes, a fluid outlet connected to the other of the pipes and the end of the pipes remote from the heat exchanger which are connected together.
Owner:MCNAIR EDWARD F
Geothermal heating and cooling management system
InactiveUS20100139736A1Solar heating energyOther heat production devicesGeothermal heatingEngineering
The present application provides a geothermal heating and cooling system for a power conversion system within an enclosure. The geothermal heating and cooling system may include a heat exchanger positioned about the power conversion system and within the enclosure, one or more pipes positioned within the ground, and a heat transfer medium circulating within the heat exchanger and the pipes so as to transfer heat between the power conversion system and the ground.
Owner:GENERAL ELECTRIC CO
Ocean thermal energy and geothermal energy combined power generating system
InactiveCN102644565AImprove energy conversion efficiencyLow construction costGeothermal energy generationMachines/enginesThermal energyWater storage
The invention discloses an ocean thermal energy and geothermal energy combined power generating system. The ocean thermal energy and geothermal energy combined power generating system mainly consists of a water storage pond, an ocean thermal gradient power generating subsystem, a water treatment subsystem, a water injection operating platform and a geothermal energy power generating subsystem. A cold seawater pipe is communicated with the water storage pond, and a warm seawater pipe is communicated with a water injection well of the geothermal energy power generating subsystem after passing through an ocean thermal gradient power generating subsystem which is lower than the sea level. The ocean thermal gradient power generating subsystem can run in the entire flow process without a pump through the pressure different action of the seawater and the technology such as a high-efficient condensing pipe, and the geothermal energy power generating subsystem adopts the cold seawater as a cooling water source to maintain lower condensation temperature. According to the ocean thermal energy and geothermal energy combined power generating system, not only is a purpose for improving the ocean thermal energy pure power generating efficiency realized, but also the geothermal energy power generating efficiency is also improved, and the energy utilization rate of the combined power generating system can be greatly improved.
Owner:JIMEI UNIV +1
Mine cooling system and method utilizing deep-well geothermal energy
ActiveCN107339118ATake advantage ofImprove dehumidification effectTunnel/mines ventillationGeothermal heatingAir treatment
The invention discloses a mine cooling system utilizing deep-well geothermal energy. The mine cooling system comprises an air treatment system, a geothermal energy recovery system and an underground cold water system. The air treatment system comprises a travelling trolley and an air treatment device arranged above the travelling trolley. The air treatment device comprises an air inlet located in the end of the air treatment device and an air outlet located in the tail of the air treatment device, and a first-stage air cooler, a first-stage rotary dehumidifier, a second-stage air cooler, a second-stage rotary dehumidifier, a third-stage air cooler, a water baffle and a fan are arranged between the air inlet and the air outlet. The invention further discloses a mine cooling method adopting the system. The air treatment system and the geothermal energy recovery system are arranged, the rotary dehumidifiers are arranged in the air treatment system, the geothermal energy is taken form a heat recovery filling body to be used for dehumidification regeneration of the rotary dehumidifiers, energy consumption of the mine cooling system is reduced, the downhole dehumidification difficult problem is solved, and the comfort of the mine working face is improved.
Owner:贾志娟
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