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7621129 |
Power generation system
A geothermal power system for production of power, and in particular electrical energy, utilizing naturally occurring geothermal energy sources and a method for identifying and converting manmade...
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7607303 |
Zero emission natural gas power and liquefaction plant
A zero-emissions power plant receives natural gas from wells at elevated pressure and temperature. Gas is expanded through one or more turbo-expanders, preferably reformed, and sent to a fuel cell...
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7422798 |
Vapour turbine
Vapour turbine operating with geothermal vapours containing corrosive agents or aggressive substances such as chlorides and/or sulfides in particular. The turbine comprises a series of stator...
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7059131 |
Method and system for exchanging earth energy between earthly bodies and an energy exchanger, especially to produce an electric current
An energy exchanger ( 2 ) is connected to an earth energy exchanger ( 18 ) via a flow line ( 10 ) and a return flow line ( 14 ). The flow line ( 10 ) and the return flow line ( 14 ) are both...
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6708494 |
Device for utlilizing geothermal heat and method for operating the same
An apparatus and a method for using geothermal energy include the use of at least a first conduit, through which a working substance is carried downward into the interior of the Earth, at least one...
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6598416 |
Fundaments and system for generating power and portable water
Studies of the variation in latent heat of fluids with temperature and the rate of heat increase with compression were applied to thermodynamic cycles represented in columns ( 190, 193, 199 ). This...
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5970714 |
Geothermal power plant operating on high pressure geothermal fluid
A geothermal power plant operating on high pressure geothermal fluid includes a primary separator for separating the geothermal fluid into two channels, one containing high pressure steam and the...
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5685362 |
Storage capacity in hot dry rock reservoirs
A method of extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other...
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5399067 |
Nozzle for use in a geothermal steam turbine and method for preventing adhesion of scale thereto
A nozzle for use in a geothermal steam turbine is adapted to prevent precipitation and adhesion of scale onto the surface of the nozzle. A coolant water passageway is provided in an initial stage...
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4596698 |
Apparatus for utilizing impure steam with extraction of one or more substances therefrom
Certain impure steams, especially those from geothermal sources, are contaminated with gaseous substances such as hydrogen sulfide, ammomia, carbon dioxide, substances comprising boron, arsenic and...
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4577679 |
Storage systems for heat or cold including aquifers
Systems and methods for storing heat or cold in aquifers in the form of hot or cold water, making use of one or more above-ground subsystems for collecting or utilizing the aquifer-stored heat...
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4458492 |
Method for the recovery of geothermal energy
A method for the recovery of geothermal energy from subterranean formations comprising injecting a thermally stable, non-corrosive, non-aqueous fluid into said formation to absorb heat; recovering...
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4366675 |
Geothermal turbine installation
A geothermal turbine intallation in which high-pressure steam is separated from geothermal steam, which is a mixture of steam and water, with the high pressure steam connected to a high pressure...
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4360547 |
Selective scale formation
A fluid stream is treated with at least one scale inducing agent prior to being passed through an engine having sweeping elements which limit the thickness of scale deposits therein to improve the...
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4357801 |
Removal of carbon dioxide in geothermal power systems
A process for removing carbon dioxide in geothermal power generating processes employing a geothermal fluid such as geothermal brine containing carbon dioxide, to improve the efficiency of...
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4357802 |
Geothermal energy production
Process for recovery of energy from geothermal fluids such as geothermal brine in a geothermal formation by injecting a water immiscible working fluid, preferably organic, typically a hydrocarbon,...
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4346560 |
Multi-stage flash degaser
A multi-stage flash degaser (18) is incorporated in an energy conversion system (10) having a direct-contact, binary-fluid heat exchanger to remove essentially all of the noncondensable gases from...
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4345652 |
Process for improving the permeability of ground formations, adapted to the production of high temperature geothermic energy
This process comprises the three successive following steps of: (a) injecting into a formation a solution of sodium or potassium hydroxide during a limited time interval to perform a chemical...
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4341077 |
Process and system for recovery of energy from geothermal brines and other hot water sources
Process and system for recovery of energy from geothermal brines and other hot water sources, which comprises direct contact heat exchange between the brine or hot water, and a hydrocarbon working...
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4326581 |
Direct contact, binary fluid geothermal boiler
Energy is extracted from geothermal brines by direct contact with a working fluid such as isobutane which is immiscible with the brine in a geothermal boiler. The geothermal boiler provides a...
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4315402 |
Heat transfer process and system
Direct contact heat transfer process and system for recovery of energy from geothermal brines or other hot aqueous solutions of a non-volatile solute, or for desalination, using staged...
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4297847 |
Conversion of geothermal energy from subterranean cavities
Geothermal energy is recovered by (1) introducing into a subterranean heat exchange medium which is in heat exchange with a high temperature formation a liquified vapor which will vaporize at the...
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4276748 |
Recovery of energy from geothermal brine and other hot water sources
Process and system for recovery of energy from geothermal brines and other hot water sources, by direct contact heat exchange between the brine or hot water, and an immiscible working fluid, e.g. a...
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4272961 |
Recovery of energy from geothermal brine and other aqueous sources
A process and system for recovery of energy from geothermal brines or other hot aqueous solutions of a non-volatile solute, by direct contact heat transfer using staged evaporator-condenser units...
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4167099 |
Countercurrent direct contact heat exchange process and system
Recovery of energy from geothermal brines and other hot water sources by direct contact heat exchange with a working fluid, such as a hydrocarbon working fluid, e.g. isobutane. The process and...
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4144715 |
Method of producing mechanical energy from geothermal fluids
A method for producing mechanical energy from geothermal fluids in which a heat transfer fluid (HTF) is heated by direct contact with the hot geothermal fluids, thereby partially cooling the...
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4120158 |
Power conversion and systems for recovering geothermal heat
A process for the conversion of geothermal heat energy into electrical power by advantageously combining direct and indirect heat exchange systems and other systems to maximize the power production...
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4084379 |
Energy conversion system
An energy conversion system for the production of power from hot fluid sources which may contain dissolved solutes and undesirable noncondensable gases is disclosed in which direct heat transfer is...
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4079590 |
Well stimulation and systems for recovering geothermal heat
The flow from geothermal wells is stimulated by injecting a liquid at selected levels in the well with the liquid having a boiling point below the temperature of the geothermal fluid at the levels...
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4063418 |
Power producing system employing geothermally heated fluid
A power producing system includes a source of geothermally heated fluid having inorganic salts dissolved therein. The fluid is directed through a first direct contact heat exchanger in heat...
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4043386 |
Energy recovery from geothermal reservoirs
A method for recovering energy from a geothermal reservoir in which brine from the reservoir is first employed to heat an immiscible fluid, such as a hydrocarbon in direct heat exchange and the...
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3988895 |
Power generation from hot brines
Hot fluid which may contain salts and other dissolved minerals is passed through a direct contact heat exchanger in heat exchange relationship with a working fluid that has a specific gravity...
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3845627 |
POWER GENERATION FROM HOT BRINES
Hot fluid which may contain salts and other dissolved minerals is passed through a direct contact heat exchanger in heat exchange relationship with a heating fluid that has a specific gravity...
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