546 results about "Geothermal power" patented technology

A composite energy system of solar energy, ground source heat pump and chilled water storage comprises an air conditioner, a domestic hot water supply device, one or more device (hereinafter referred to as host) of a solar energy heat-collecting device, a heat storage water tank unit, a cold storage water tank unit and a ground source heat pump system, a ground heat exchanger, an auxiliary heating device, a circulating water pump, a first electric three-way valve, a second electric three-way valve, a first electric two-way valve and a second electric two-way valve, wherein the circulating water pump is communicated with the air conditioner, and the auxiliary heating device is communicated with the domestic hot water supply device. The invention fully utilizes renewable energy sources such as solar energy, geothermal energy and biomass energy to masterly combine the ground source heat pump air-conditioning system with the solar energy hot water system and the chilled water storage system and construct a comprehensive energy system combined by the domestic hot water system, the ground source heat pump, the chilled water storage air-conditioning system and the like; and the invention is completely combined with the entire building so as to greatest reduce the floor space and the investment and increase the energy efficiency and economic performance of the system.

The system and method to reduce the temperature of geothermal water to increase the capacity and efficiency while decreasing the costs associated with a geothermal power plant construction uses a high efficiency steam turbine. The steam turbine lowers the high temperature geothermal resource so it can be used in parallel with an innovative low temperature Organic Rankine Cycle (ORC) geothermal power plant to increase the efficiency and capacity while at the same time to reduce the costs associated with constructing the power plant because of logistics, labor and material.

The invention provides a system for adapting an HVAC system in an existing building for utilizing geothermal energy, the system comprising an incoming flux of geothermal energy; a plurality of heat exchange surfaces adapted to receive the incoming flux of geothermal energy; and an interface between the HVAC system and the heat exchange surfaces, said interface adapted to transfer the geothermal energy to the system. Also provided is a method for repairing aberrations in drill borings, the method comprising using a rotary mud drill system to produce a drill hole up to the location of the aberrations; removing the rotary mud drill from the drill hole; inserting an auger into the drill hole to a point directly above the location of the aberrations; actuating the auger; introducing loose substrate into the drill hole; allowing the substrate to contact the auger; and lifting and lowering the auger along longitudinally extending regions of the drill hole defining the aberrations for a time and in substrate amounts sufficient to fill the aberrations. The invention also provides a system which facilitates rotating drill bits at an rpm which are multiples faster than their associated drill strings.

The invention discloses a geothermal energy collecting pile foundation which comprises a tubular pile, heat conduction liquid, a spreader plate, a cover plate, a bottom plate, heat conduction pipes, a collector and the like, wherein the bottom of the pile is completely closed by adopting reinforced concrete, the reinforced concrete cover plate is arranged on the top of the pile, a plurality of holes are arranged in the cover plate, the spreader plate is arranged in a cavity in the tubular pile, a plurality of holes are arranged in the locations, close to the bottom, of the spreader plate, the cavity of the tubular pile is filled with the heat conduction liquid, the heat conduction pipes penetrate through the holes in the cover plate and extend in the heat conduction liquid in the cavity of the tubular pile, and the heat conduction pipes are connected with the collector and form a circulating channel with the cavity of the tubular pile. The invention also discloses a construction method of the pile. The construction method comprises the following technical steps of: constructing the tubular pile in a foundation, excavating pile core soil, making the bottom plate, installing the spreader plate, installing the cover plate, installing the heat conducting pipes, injecting the heat conducting liquid and the like. The geothermal energy collecting pile foundation has the advantages of simple and convenience for construction, no influence on the stress of the tubular pile body, convenience for examination and maintenance, wide application range and low construction cost, and is an energy saving and emission reduction pile with economy and high efficiency.

The invention discloses an S-CO2 power generation system and method for developing geothermal energy of hot dry rock based on a finned casing pipe. The finned casing pipe is a coaxial casing pipe, andthe system is composed of an outer-layer descending pipe segment, an outer-layer enhanced heat exchanging pipe segment, an inner backflow pipe, an S-CO2 gas turbine, a power generator, a compressor and the like. According to the innovation point of the S-CO2 power generation system and method for developing the geothermal energy of the hot dry rock based on the finned casing pipe, by means of closed-loop circulation of S-CO2 in the finned casing pipe, the geothermal energy is transmitted to the gas turbine from a hot dry rock layer; the finned casing pipe and the gas turbine both adopt the S-CO2 as circulating work media, and the heat exchanger end difference is eliminated; and fins are added outside a hot dry rock segment, the heat transfer area is increased, and the single well output is improved. The S-CO2 flows to the bottom of a heat taking well from the outer layer of a heat taking casing pipe to be collected to the inner layer, the geothermal energy in the hot dry rock is absorbed in the descending process, temperature ceaselessly rises, the S-CO2 then flows back to the ground from the inner layer, and the geothermal energy is converted into high-grade electric energy through the S-CO2 gas turbine and the power generator. After being detected by a work medium detecting unit and pressurized by the compressor, the S-CO2 starts new circulating, and sustainable exploitationof the geothermal energy of the hot dry rock is achieved.

A single closed loop direct exchange geothermal power production system that utilizes a refrigerant working fluid in at least one of three primary designs to generate electrical power from deep wells: with a first version of a direct exchange geothermal power generating system operating primarily on refrigerant vapor pressure; with a second version of a direct exchange geothermal power generating system operating primarily on liquid refrigerant gravitational pressure; and with a third version of a direct exchange geothermal power generating system operating primarily on both liquid refrigerant gravitational pressure and refrigerant phase change/expansion from a liquid to a vapor state.

The invention relates to a novel geothermal energy solar central air conditioner system and belongs to the technical field of central air conditioning systems, in particular to a high-efficient and energy-saving device for refrigerating or supplying heat for a green environmental protection area. The device comprises a solar thermal collector, a hot water storage tank, a water tank valve, a ground tube valve, a circulating water pump, a ground tube heat collecting system, a heat exchanger, and a floor radiation or fan coil. A ground source heat pump uses energy of normal-temperature soil on shallow ground or ground temperature in water source as a low-grade heat energy resource. The system is suitable for houses and commercial buildings, and is the energy-saving technology with sustainable development. The system realizes heat transmission to ground heat sources by using flowing of a cyclic medium in a closed ground pipe. The system adopts solar energy as auxiliary heat sources. The solar thermal collector is preferentially used for colleting heat when sunshine is sufficient. The heat pump system can be designed with smaller load, and thus, the initial investment of the ground source heat pump can be greatly reduced.

Two Geothermal energy harnessing devices, steam producing System, electricity production Method and heat energy Method are invented for mining renewable geothermal heat energy within a non-polluting, re-circulating, closed cycle intended for electricity generating applications or for other direct or indirect heat uses. The devices, the “Geothermal Energy Collector” and the “Geothermal Energy Exchanger” can work with a Depressurized Mixing Container and a Pressurized Storage Container the entirety of which comprises “THE GEOTHERMAL FLUID HEATING OR STEAM PRODUCTION SYSTEM. The system serves other equipment, such as a phase separator, steam turbine, generator and condenser, which working together with the system comprises either “THE GEOTHERMAL ELECTRICITY PRODUCTION METHOD” or “THE GEOTHERMAL HEAT ENERGY METHOD”. The GEC or GEE can work alone or within a system to add heat to any fluid and to use the heated fluid to supplement any appropriate technology, to produce electricity or for other direct or indirect uses.

The invention discloses a low temperature geothermal energy production technique method, and belongs to a geothermal energy utilization technique. According to the method, fracturing and communication are performed in a heat storage stratum section through drilling, fracturing and directional drilling techniques on the premise that geological environment stability is ensured according to a geothermic gradient theory, so that subsections of a heat storage stratum are communicated in a certain depth underground, a relatively independent fluid circulation space system is formed, and the purpose of low temperature geothermal energy production is achieved in an extraction and filling combined linkage manner. The method and techniques are scientific and reasonable, the production and utilization problems of low-temperature geothermal energy in a vast underground water area are solved, the technical target that hot springs exist anywhere is achieved, geothermal energy resources are sufficiently utilized, and the geological environment is not damaged.

The invention discloses a buried pipe ground source heat pump system and method using peak power for assisting cold/heat storage. A buried pipe heat exchanger and a ground source heat pump unit form a cold/heat source side ring loop I, an evaporator and a primary side of a heat exchanger I of the ground source heat pump unit form a heat exchange ring loop II, and a secondary side of the heat exchanger I and a user side form a ring loop III; the evaporator of the ground source heat pump unit and an energy storage water tank form a cold storage ring loop IV; the energy storage water tank and a primary side of a heat exchanger II form a cold/heat release ring loop V; a secondary side of the heat exchanger II and the user side form a ring loop VI; an electric heating device and the energy storage water tank form a heat source side ring loop VII; a condenser of the ground source heat pump unit and a floor heating pipe form a user side ring loop VIII. The system fully utilizes shallow geothermal energy, peak power and electrical energy storage technique, and realizes the most economical air conditioner running mode. The technique solves the problem of cold/heat energy unbalance of underground rock and earth masses of northern dwelling house projects, and can be used as a remedial measure for single heating ground source heat pump projects.

The invention discloses a deep coal bed gas and dry hot rock type terrestrial heat combined mining method, and belongs to the technical field of geological new energy development. A CO2 injection well is a single-branch horizontal well, a horizontal well section is located in a hot dry rock geothermal reservoir, and 8-10 geothermal exploitation vertical wells are constructed on the ground on the two sides of the horizontal well section; and the CO2 injection well horizontal well section is subjected to staged fracturing and is synchronously fractured with the geothermal exploitation vertical well, so that an artificial fracture channel is formed between the CO2 injection well and the geothermal exploitation well. Lateral drilling of a branch horizontal well is carried out on a straight well section of the CO2 injection well, the lateral drilling horizontal well section is located in the deep coal reservoir, and after drilling is completed, a screen pipe is put down for well completion; and 8-10 coalbed methane mining vertical wells are constructed on the ground on the two sides of the lateral drilling horizontal well section, and a deep coal reservoir is transformed in a fracturing mode after perforation well completion. CO2 is injected into a well for continuous gas injection, the recovery ratio of deep coal bed gas is increased through the replacement and displacement effects of CO2 on CH4, meanwhile, the geothermal energy in the hot dry rock is extracted with supercritical CO2 as a circulating working medium, and the geothermal energy is converted into electric energy through a supercritical CO2 generator.

A system designed to introduce fresh air ventilation into the living space, eliminate contaminants, and add fresh air to augment a building's HVAC system. This is done in order to save energy, and the costs associated with heat loss or gain in a building. The system employs the use of geothermal energy conferred to air via a cavity which is constructed in the basement, on the slab, foundation, in the crawl space and/or attic of a building. This cavity is created to circulate, absorb and store/release the geo-solar characteristics of a building, taking advantage the consistent subterranean temperature of the earth and/or sun, in order to warm air from outside during the winter minimizing the foundation heat sink, and cool air during the summer. One or more heat exchangers are used to transfer the energy from contaminated air in the cavity to clean air destined for the HVAC system.

A process for producing power including injecting a first heat transfer fluid through an injection well to a geothermally-heated formation that contains a second heat transfer fluid. The first heat transfer fluid may then be heated via indirect heat exchange in an interwell run fluidly connected to the injection well and disposed within the geothermally-heated formation. The heated first heat transfer fluid may then be recovered through a production well fluidly connected to the interwell run. Thermal energy contained in the recovered heated first heat transfer fluid may then be converted in a power production unit fluidly connected to the injection well and the production well. The interwell run, in some embodiments, may include multiple heat exchange tubes disposed within a perforated casing or drill pipe.

The invention discloses a constant-temperature greenhouse. The constant-temperature house maintains the constant temperature and ventilation of the greenhouse through utilizing renewable geothermal energy, a heat recovery technology and an inflatable and deflatable double-layer insulation film. The constant-temperature greenhouse comprises polyethylene (PE) heat exchange tubes, a water tank, a water pump, a fresh air ventilator, the inflatable and deflatable double-layer insulation film and a temperature probe, wherein the water tank is used for supplementing water for the PE heat exchange tubes; the water pump is used for promoting the water circulation in the PE heat exchange tubes so as to bring the energy of a constant-temperature underground layer to a superficial ground, so that the ground is kept at constant temperature; the fresh air ventilator is used for supplementing fresh air into the constant-temperature greenhouse, recycling the energy of the constant-temperature greenhouse and maintaining a required environment for plant growth; the inflatable and deflatable double-layer insulation film is filled with dry air or deflated through inflation and deflation ports, the inflated double-layer insulation film is used for keeping the temperature of the constant-temperature greenhouse, and the deflated double-layer insulation film is used for absorbing the heat of the constant-temperature greenhouse; and the temperature probe is used for detecting the temperature inside and outside the constant-temperature greenhouse, judging the internal and external temperature difference condition and determining the inflation, deflation and fresh air quantity.

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 present disclosure is directed to geothermal power generation systems. The systems can comprise a first separator is in fluid communication with the geothermal fluid source, the first separator having a high pressure steam outlet and a liquid fraction outlet. A high pressure turbine is in fluid communication with the high pressure steam outlet and is coupled to a first power generator. A high pressure condenser is in fluid communication with the high pressure turbine. A low pressure separator is in fluid communication with the liquid fraction outlet of the first separator, the low pressure separator being capable of separating steam from the liquid fraction outflow and providing low pressure steam through a low pressure steam conduit. A low pressure turbine is in fluid communication with the low pressure steam conduit, the low pressure turbine being coupled to a second power generator. A main condenser is in fluid communication with the low pressure turbine. Methods for generating geothermal power are also discussed.

The invention discloses a medium-low temperature geothermal power generation unit coupled with a Kallina cycle. The medium-low temperature geothermal power generation unit is structurally characterized in that a high-temperature heat regenerator, a generator, a separator, a turbine low-temperature heat regenerator and a condenser are in parallel connection with a first throttling valve between the high-temperature heat regenerator and the low-temperature heat regenerator to form a Kalina geothermal power generation system, wherein the high-temperature heat regenerator, the generator, the separator, the turbine low-temperature heat regenerator and the condenser are sequentially connected in series. A second condenser, a solvent pump, an evaporator, a throttling valve and an absorber are sequentially connected in series to form an absorbing temperature-increasing system. The throttling valves are connected to the separator, the absorber is connected with the high-temperature heat regenerator to ensure that the absorbing temperature-increasing system and the absorbent geothermal power generation are combined into the medium-low temperature geothermal power generation unit. The medium-low temperature geothermal power generation unit can generate absorbing temperature of about 100 DEG C, and reduces the exhaust temperature of geothermal wastewater to about 60 DEG C so as to achieve the purpose of improving the power generation efficiency of the unit by using low-level geothermal energy. According to the invention, working medium types and state parameters are coincident to the Kalina system without massively adjusting various items of parameters of the traditional system.