71 results about "Geothermal heat exchanger" patented technology

The invention discloses a pile-embedding spiral pipe typed ground source heat pump system and a heat transmission model of a geothermal heat exchanger thereof. A solid cylindrical surface heat source model is put forward for the first time and two analytic solution expressions of the heat transmission model is worked out by the Green function method. The system can sufficiently utilizes the underground area of a building, saves a great amount of expenses for boring and pipe embedding, reduces the initial investment of the ground source heat pump system, improves the construction efficiency and has convenient and quick construction. Furthermore, the heat transmission model of the pile-embedding spiral pipe geothermal heat exchanger can quantitatively analyze the effects of all parameters of the pile-embedding spiral pipe geothermal heat exchanger on the heat transmission capability and provides a basis for the engineering design. The structure of the pile-embedding spiral pipe typed ground source heat pump system comprises the geothermal heat exchanger which is connected with an air conditioning heat pump system by pipelines; the air conditioning heat pump system is connected with a conveying and end system in the building; the geothermal heat exchangers have the quantity of more than one; and each geothermal heat exchanger forms the pile-embedding spiral pipe-typed geothermal heat exchanger by building pile foundations and spiral pipes which are embedded in the pipe foundations.

Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.

A wind turbine having a tower and a nacelle, includes at least one unit to be heated or cooled. The unit can be housed within the tower or nacelle. A geothermal heat exchanger can be located inside the tower or nacelle. A geothermal cooling circuit provides flow communication between the unit to be heated or cooled and the heat exchanger, and contains a thermal transfer medium flowing between the unit and the heat exchanger for facilitating heating or cooling of the unit.

A pipe for use in a geothermal heat exchange system is disclosed that is insertable into a bore hole having a proximal end and a distal end. The pipe has a proximal end, a distal end and an outer wall member. The outer wall member includes an external surface, and an interior surface defining an interior passageway through which a heat exchange fluid can flow. The pipe also includes a divider extending between opposed points of the interior surface for dividing the interior passageway into an inflow passageway for conducting water from the proximal end to the distal end of the pipe, and an outflow passageway for conducting water from the distal end to the proximal end of the pipe. The divider segregates the water in the outflow passageway from the water in the inflow passageway.

A geothermal heat exchanger includes a water injection pipe installed underground and receiving water supplied from above ground and a steam extraction pipe installed underground and contiguous to the water injection pipe. The steam extraction pipe has a plurality of gushing ports at its lower part, and pressure in the steam extraction pipe is decreased approximately to pressure required by a turbine. The steam extraction pipe is formed such that the diameter of the steam extraction pipe becomes smaller from the lower side of the geothermal region toward the upper side of a ground surface. Water supplied to the water injection pipe becomes high-temperature pressurized water by heat supplied from the geothermal region, and gushes from the gushing ports into the steam extraction pipe in an atomized state, and is then converted into a steam single-phase flow, and allows a power generator to conduct power generation.

Described herein is a desiccant air-conditioning system which is characterized in that the system is equipped with an introducing route where process air is introduced into a geothermal heat exchanger, a supplying route where the process air which is cooled by the geothermal heat exchanger is introduced into a space to be air-conditioned and a desiccant wheel which is placed in an extending manner over both of the introducing route and the supplying route and, when the desiccant wheel is rotated so that each part thereof is successively positioned to said introducing route and supplying route, the process air after cooling is dehumidified by said desiccant wheel and the desiccant wheel is regenerated by the process air before cooling.

A heat-electricity combined production system includes: a solar cell module in which a flow path through which a heat source side heating medium heated by solar heat flows, is formed and which generates electricity by solar light; a geothermal heat exchanger that absorbs geothermal heat through the heat source side heating medium; a heat pump including a heat source side heat exchanger that performs heat-exchange between the heat source side heating medium and a refrigerant and a load side heat exchanger that performs heat-exchange between the refrigerant and a load side heating medium; a controller that control the heat source side heating medium to pass through both the solar cell module and the geothermal heat exchanger; and a plurality of pipes that connect the solar cell module, the geothermal heat exchanger and the heat pump.

A geothermal heat exchanger 1 includes a water injection pipe 2 that is installed underground and to which water is supplied from above ground and a steam extraction pipe 3 that is installed underground so as to be contiguous to the water injection pipe 2. The steam extraction pipe 3 has a plurality of gushing ports 5 at its lower part, and pressure in the steam extraction pipe 3 is decreased approximately to pressure required by a turbine 6. The steam extraction pipe 3 is formed such that the diameter of the steam extraction pipe 3 becomes smaller from the lower side of the geothermal region toward the upper side of a ground surface G. Water supplied to the water injection pipe 2 becomes high-temperature pressurized water by heat supplied from the geothermal region 4, and gushes from the gushing ports 5 into the steam extraction pipe 3 in an atomized state, and is then converted into a steam single-phase flow, and allows a power generator 7 to conduct power generation. Furthermore, an air layer 19 is formed at the upper part of the water injection pipe 2 by lowering the water level of water that is supplied to the water injection pipe 2, and a heat insulating portion defined thereby is provided in a region contiguous to a low-temperature region 26 closer to the ground surface.

The present invention is directed at the thermodynamic property amplification of a given thermal supply, provided by hydrocarbon combustion or in the preferred application heat provided by low-grade geothermal energy from the earth, for a vapor power cycle. The present invention achieves the desired objectives by segregating the compressible supercritical energy stream from the heat exchanger (boiler) into hot and cool fractions using a vortex tube, where the hot temperature is elevated above the heat exchanger temperature; and adding back heat (enthalpy) to the cool stream increasing the cool temperature to that of the geothermal heat exchanger. The heat-exchanger (boiler) supercritical gaseous mass flow segregated by a counterflow vortex tube (or bank of vortex tubes) forms hot and cool fractions where the hot temperature is raised above the heat-exchanger supply temperature, and heat (enthalpy) is added to the cool stream thereby increasing the cool temperature to that of the heat exchanger supply temperature.

The invention discloses a deep-sea carbon storage and power generation system. The deep-sea carbon storage and power generation system comprises a waste heat turbine, a waste gas heat exchanger, a gasstripping device, a waste gas treatment device, a supercritical carbon dioxide compressor, wave energy power generation equipment, a geothermal heat exchanger, a supercritical carbon dioxide turbineand a seabed cooler. According to the deep-sea carbon storage and power generation system disclosed by the invention, waste heat power generation and carbon dioxide stripping are performed on power plant waste gas, and the stripped carbon dioxide is applied to a seabed geothermal Brayton cycle, and is finally stored in deep-sea storage holes. The system is compact in structure, is small in size and is high in efficiency. Rich seabed geothermal energy is used as a heat source, is free of pollution and is low in cost; carbon dioxide is stored in the form of carbon dioxide hydrate, is relativelylow in cost, is environmentally-friendly and is good in leakproofness; and a dried oilfield, gas field or natural hole with a good storage cover in a seabed geologic body is utilized as a carbon storage site, so that the storage effect is good, and later-period maintaining and monitoring cost is reduced, and therefore, the system has a wide application prospect.

Disclosed is a two-stage heating geothermal system using geothermal energy. The two-stage heating geothermal system includes a geothermal heat exchanger, a geothermal heat pump, a booster heat pump, a bypass line, and a bypass line opening and closing valve. The operating efficiency of the two-stage heating geothermal system using geothermal energy is significantly improved. Hot water supply, auxiliary heating, and the like are controlled to be completely independent of main heating.

The invention discloses an underground reflux tube circulating geothermal energy exchanging device, which comprises the following parts: underground pipe, heat exchanging unit, circulating pump, heat-loading dielectric and circulating loop, wherein the underground pipe is underground reflux housing pipe of inner pipe in the outer pipe; the geothermal energy exchanging circulating loop provides heat or cold source for dielectric, which forms underground circulation loop through reflux pipe bottom, interlayer of inner and outer pipe or underground circulation.

PROBLEM TO BE SOLVED: To provide a geothermal heat pump type air conditioner for saving energy by reducing load of a hydrothermal heat pump, generating no heat exchange loss owing to high heat exchange efficiency of an underground heat exchanger and for making it easy to process the underground heat exchanger, bore a hole for burying the underground heat exchanger and conduct a burial work. ŽSOLUTION: The geothermal heat pump type air conditioner consists of the underground heat exchanger 7 equipped with a resin supply pipe part 1 through which a heat medium spirally flows downward underground near an earth surface and a return pipe part 2 for returning the heat medium out from the supply pipe part 1 to above the ground, a water coil 8 for conducting heat exchange of air for air supply by flowing the heat medium which is heated and / or cooled by the underground heat exchanger 7 and a water heat source heat pump 9 for conducting heat exchange of a circulation refrigerant by flowing the heat medium and for conducting heat exchange of the air for air supply via the water coil 8 by the circulation refrigerant. Ž

The invention relates to a phase change energy storage sleeve-type geothermal heat exchanger and belongs to the technical field of ground source heat pump air conditioners. The phase change energy storage sleeve-type geothermal heat exchanger is constituted by a central pipe, a first sleeve, a second sleeve, a third sleeve, a first annular channel, a second annular channel, a top cover plate, a bottom cover plate, summer and winter working condition phase change materials, a water inlet pipe and a water outlet pipe. The first sleeve, the second sleeve and the third sleeve are placed on the outer side of the central pipe in the radius increasing direction with the central pipe as the circle center. The summer working condition phase change materials are packaged into the central pipe, the winter working condition phase change materials are packaged into an annular closed space defined by the second sleeve and the third sleeve. According to the phase change energy storage sleeve-type geothermal heat exchanger, the defects of large soil temperature fluctuation, wide thermal effect zone and large thermal short-circuiting of the water inlet and outlet pipes during operation of an existing geothermal heat exchanger are overcome, through phase change heat absorption and release of the phase change materials, the heat exchange amount of the geothermal heat exchanger can be increased while thermal short-circuiting of the water inlet and outlet pipes is weakened, the thermal effect degree of the soil temperature is reduced, the thermal interference radius is decreased, and the pipe burying area is decreased, so that the heat exchange efficiency of the heat exchanger is improved.

A data center cooling system is operated in a first mode, has an indoor portion wherein heat is absorbed from components in the data center by a heat transfer fluid, and has an outdoor heat exchanger portion and a geothermal heat exchanger portion. The first mode includes ambient air cooling of the heat transfer fluid in the outdoor heat exchanger portion and / or geothermal cooling of the heat transfer fluid in the geothermal heat exchanger portion. Based on an appropriate metric, a determination is made that a switch should be made from the first mode to a second, different, mode; and, responsive thereto, the data center cooling system is switched to the second mode. The second mode includes at least another of ambient air cooling of the heat transfer fluid in the outdoor heat exchanger portion and geothermal cooling of the heat transfer fluid in the geothermal heat exchanger portion.

The invention discloses a heat transfer simplified analysis method of a cluster vertical buried tube geothermal heat exchanger. Feature regions are divided by analyzing the change rule of an underground temperature field of a buried tube area, representative buried tubes are selected for the feature regions and are recombined to form a representative cluster vertical buried pipe geothermal heat exchanger, and heat transfer of the representative cluster vertical buried pipe geothermal heat exchanger is analyzed and calculated. After calculation is finished, a calculation result restores to an actual cluster vertical buried tube geothermal heat exchanger by the utilization of the heat exchange amount of the buried tubes and the periodicity and symmetry of changes of a rock temperature field. The calculation result obtained by the utilization of the representative cluster vertical buried pipe geothermal heat exchanger can also be popularized to any cluster vertical buried pipe geothermal heat exchanger with the same conditions and with the row number and the column number of buried tubes being no less than those of cluster vertical buried tube geothermal heat exchangers, wherein the conditions comprise geological conditions, the depth of the buried tubes, the diameter of drilled holes, backfill materials, the load borne by each buried tube, and the like. By the utilization of the method, on the basis of ensuring the heat transfer analysis result to be accurate, the computational effort is reduced remarkably.

The invention discloses a method for designing and calculating the drilling depth of a medium-deep buried pipe heat exchanger, and the method comprises the steps: building a numerical heat exchange model on the basis of considering the ground temperature gradient, simulating the heat transfer process of a buried pipe, and carrying out the design and calculation of the drilling depth of the buriedpipe. Structural parameters of the buried pipe and physical property parameters of all parts of the system are known, the design and calculation of the drilling depth of the buried pipe according to the design thermal load are met, and the inlet water temperature of the buried pipe should be within a certain temperature range in the service life cycle of a building. According to the method, on thebasis that the designed thermal load is met, the designed drilling depth value is accurately calculated, and it is avoided that due to the fact that the designed drilling depth is small, the temperature of circulating liquid in the buried pipe is reduced, and the energy efficiency ratio of the heat pump unit is reduced; meanwhile, drilling cost waste caused by the fact that the drilling depth ofthe buried pipe is too large is avoided, data reference is provided for drilling design calculation of actual engineering, and in the actual engineering design process, the drilling design depth valuecan be obtained through calculation only by adjusting various parameters.

The invention provides a plum-blossom-shaped phase change geothermal energy pile and a use method thereof, and belongs to the field of ground source heat pump air conditioning technologies and energystructures. The energy pile is composed of a reinforced concrete pile body and a plum-blossom-shaped phase change geothermal heat exchanger built in the pile body; the reinforced concrete pile body iscomposed of a reinforcement cage and placed concrete; the plum-blossom-shaped phase change geothermal heat exchanger is composed of a phase change inner tube, an outer tube, a bottom joint and a topjoint; the phase change inner tube is composed of an inner sleeve, an outer sleeve and a composite phase change material; and the composite phase change material is encapsulated between the inner sleeve and the outer sleeve. The plum-blossom-shaped phase change geothermal energy pile provided by the invention solves the defects that the temperature of a traditional U-shaped tube energy pile body is large and the displacement of the pile body is obvious; through the heat absorption and heat release of the phase change material in the plum-blossom-shaped phase change geothermal heat exchanger, thermal interference of inlet and outlet pipes can be reduced, the temperature change amplitude of the energy pile body can be reduced, the thermal strain of the energy pile and the displacement of thepile body can be relieved, and at the same time, the output capability of the geothermal heat exchanger is increased, and the heat exchange performance of the geothermal heat exchanger is improved.

Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.

The invention discloses a partition running method for relieving an underground cold / heat energy accumulative effect of a buried pipe geothermal heat exchanger. Aiming at a system in which heat energy released towards the underground by the geothermal heat exchanger in summer and heat energy taken from the underground by the geothermal heat exchanger are not balanced, the geothermal heat exchanger is partitioned into an inner area and an outer area, the inner area and the outer area are put into operation respectively, the inner area runs in seasons of which heat energy exchange with the underground is relatively small, and the whole geothermal heat exchanger runs in seasons of which heat energy exchange with the underground is relatively large. The partition running method for relieving the underground cold / heat energy accumulative effect of the buried pipe geothermal heat exchanger can relieve the cold / heat energy accumulative effect caused after the working areas of the geothermal heat exchanger run for many years.

A solar geothermal air conditioner comprises a solar collector, an underground geothermal heat exchanger and a full-automatic solar geothermal air-conditioner controller. The solar collector is connected with a heating system heat exchanger and a circulating fan through a solar heating water inlet pipe and a solar heating water return pipe. The underground geothermal heat exchanger is arranged underground, is used for collecting underground cold and is connected with a refrigerating system heat exchanger and the circulating fan through an underground cold water inlet pipe and an underground cold water return pipe, and an electromagnetic valve and a refrigerating system circulating pump are sequentially connected on the underground cold water inlet pipe. An indoor heating insulation water box is connected with an indoor hot water system, an indoor water box water inlet pipe of the indoor heating insulation water box is communicated with the solar heating water inlet pipe, and an indoor water box return pipe is communicated with the solar heating water return pipe. A solar photovoltaic power system is used for powering the whole air conditioner.

A system, an arrangement and method for heating and cooling of several building spaces-or buildings includes two or more building spaces or buildings, and a secondary thermal network including a supply line and a return line. The arrangement further comprises two or more building connections arranged parallel to each other and between the supply line and provided in connection with the two or more building spaces or buildings, a ground hole and a geothermal heat exchanger provided to the ground hole and arranged in connection with the secondary thermal network.

The invention discloses a gradient utilization system by medium / low-temperature geothermal energy assisted carbon dioxide capture. The system is mainly composed of a power plant power generation subsystem, a carbon dioxide capture subsystem, a medium / low-temperature geothermal energy subsystem and related control components. All the parts are mainly connected by a fume cleaning device, a reboiler and a geothermal heat exchanger, thereby forming an overall system. The operating fluid subjected to heat exchange with the geothermal fluid sequentially passes through the reboiler and the power plant low-pressure water supply heat exchanger, thereby providing heat for the reboiler in the carbon dioxide capture process, providing heat requirements for the power plant low-pressure water supply heat exchanger, and lowering the extraction steam of power plant low-pressure water supply heating. The system sufficiently implements the gradient utilization of geothermal energy, can greatly lower the energy consumption by extracting steam from the power plant steam turbine, implements the double effects of renewable energy source utilization and power plant carbon dioxide emission reduction on the premise of maintaining the stability of the power plant, and vigorously promotes the large-scale application of the national geothermal energy and flue gas capture integration technology.

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 boiling-water geothermal heat exchanger 1 is provided with a water injection pipe 2 which is installed underground and to which water is supplied from the ground and a steam extraction pipe 3 which is installed underground so as to be in contact with the water injection pipe 2 and has a plurality of ejection ports 5, in which a pressure inside the steam extraction pipe 3 is reduced to the vicinity of a pressure required by a turbine 6, high-pressure hot water which is produced by supplying heat from a geothermal region 4 to water inside the water injection pipe 2 is changed to a single-phase flow of steam inside the steam extraction pipe 3 present underground via the ejection ports 5, and the single-phase flow of steam is extracted on the ground. And in the boiling-water geothermal heat exchanger 1, a heat insulation portion is formed at a part which is in contact with a low-temperature region close to the ground surface, and the heat insulation portion is such that the level of water supplied to the water injection pipe 2 is lowered to form an air layer at an upper part of the water injection pipe 2.

PROBLEM TO BE SOLVED: To suppress fluctuation of resistance value due to variance of resistor shape or of resistor element when integrally sintering an insulation substrate composed of glass ceramic. and a resistor. SOLUTION: A wiring board is provided with an insulation substrate 3 comprising a glass ceramic sintered body, a resistor 1 integrally sintered with the insulation substrate 3 inside of and / or on a surface of the substrate 3, and a wiring conductor 2 whose ends are connected overlapping with the upper portions of both ends of the resistor 1. The resistor 1 in the wiring board contains 40-70 mass% tin oxide and 30-60 mass% platinum. Resistance value of the resistor 1 is stabilized by controlling reaction / diffusion phenomenon with glass ceramics with a resistor composition material, and by stabilizing the resistor shape. COPYRIGHT: (C)2003,JPO

The present invention relates to a wind turbine geothermal heating and cooling system. Specifically a wind turbine having a tower and a nacelle, includes at least one unit to be heated or cooled. The unit can be housed within the tower or nacelle. A geothermal heat exchanger can be located inside the tower or nacelle. A geothermal cooling circuit provides flow communication between the unit to be heated or cooled and the heat exchanger, and contains a thermal transfer medium flowing between the unit and the heat exchanger for facilitating heating or cooling of the unit.