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5924287 Domestic energy supply system  
An energy supply system which utilizes a vaporizing chamber containing a vaporisable liquid. A heat source is supplied to vaporize the liquid which drives an engine to produce mechanical energy. A...
5911853 Method for treating paper mill condensate to reduce the amount of sulfur compounds therein  
The invention described in the specification is a method for removing hydrogen sulfide, volatile mercaptans and methyl sulfides from a paper mill condensate stream. In the method, carbon dioxide...
5911684 System for geothermal production of electricity  
A system for the generation of electricity from geothermal energy that is less expensive, more efficient, and avoids dealing with undesirable byproducts, is disclosed. The system of the present...
5899071 Adaptive thermal controller for heat engines  
A solar to mechanical or electric power conversion system which has a controller that varies the speed of a cooling fan and cooling fluid pump fan in accordance with the available solar energy...
5884481 Heat engine heater assembly  
A heater assembly for a heat engine designed to utilize solar energy and heat produced by combustion of a fuel such as natural gas. A receiver housing allows concentrated solar energy to be...
5878571 Device for amplifying the output of a driven machine  
A device (1) has a drive (2) with a gas chamber 93), a plate (4) moveably disposed therein, a heater (5), a cooler (8) and a regenerator (11). An auxiliary drive (14) can move the plate (4)...
5867988 Geothermal power plant and method for using the same  
Extracted geothermal fluid (which may comprise geothermal liquid or brine) is used to operate a power plant by applying the extracted geothermal fluid to a vaporizer containing pre-heated working...
5858245 Inhibition of silicate scale formation  
A method for controlling fouling of a production or reinjection well, a flashing vessel or a heat-exchange surface exposed to a high-enthalpy geothermal brine that forms metal/silicon-containing...
5857322 Hybrid solar and fuel fired electrical generating system  
An electric power generation system combines a gas turbine generator with a solar power plant and utilizes the gas turbine exhaust for steam superheating and feed water heating only. The solar...
5857338 Seal system for geothermal power plant operating on high pressure geothermal steam  
A seal system for a geothermal power plant of the type having a steam turbine operating on high pressure steam produced from geothermal fluid includes a high pressure seal housing associated with...
5839282 Method and means for using a two phase fluid  
A method for using a two-phase fluid includes separating the fluid into its two phases, one of which is a hot gas containing energy in the form of latent heat, and one of which is a hot liquid...
5822990 Converting heat into useful energy using separate closed loops  
Converting heat in a primary fluid (e.g., steam) to useful energy by multistage expansion of the primary fluid, heating of a multicomponent working fluid in a separate closed loop using heat of...
5816048 Method for utilizing acidic geothermal fluid for generating power in a rankine cycle power plant  
A method for utilizing acidic geothermal fluid (e.g., fluid having a pH of less than about 3.5) containing non-condensable gases in a geothermal power plant includes separating the geothermal...
5813839 Gas driven external combustion heat engine pump having the outlet pipe connected to a variable buoyant float  
An external-combustion heat engine pump, one version consisting of four chambers, one liquid and one gas pumping chamber, a gas heating chamber and a gas cooling chamber. The two pumping chambers...
5809784 Method and apparatus for converting radiation power into mechanical power  
A method and apparatus for converting radiation power, especially solar radiation, into mechanical power. A piston is provided that is movable in a cylinder accompanied by the formation of a...
5806317 Method and device for solar steam generation  
Steam is generated by conducting a medium through a line which is exposed to solar irradiation. The line has a starting point where a medium supply line issues into the line. The heated medium is...
5775107 Solar powered electrical generating system  
A solar powered electrical generating system (10) comprising a continuous hydraulic circuit (12) carrying a liquid (14) therethrough. A boiler (16) is fluidly connected to a first side of the...
5755102 Method of and means for producing power using concentrated brine  
A hygroscopic power plant utilizes low salinity liquid (e.g., sea water having a salinity of about 4%) and a source of high salinity liquid (e.g., brine having a salinity of about 38%) for...
5740672 Method for using geothermal power plant  
A transportation system is based on battery powered vehicles operating in an isolated geographic area within which a base electrical load during the day exceeds the normal electrical load during...
5727379 Hybid solar and fuel fired electrical generating system  
An electric power generation system combines a gas turbine generator with a solar power plant and utilizes the gas turbine exhaust for steam superheating and feed water heating only. The solar...
5694774 Solar energy powerplant  
A solar energy powerplant is described comprising a group of seven or more vertical towers open at both ends, these towers being mounted on a base structure in an equally spaced configuration with...
5694772 Method of apparatus for disposing of non-condensable gases present in geo fluid  
A stream of non-condensable gases that include hydrogen sulfide which are produced by a geothermal plant are disposed of by first compressing at least a part of the stream to form compressed...
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...
5685147 Buoyancy and thermal differentials energy generator  
A system for extracting useful energy from two masses of matter having polarized hot and cold temperatures operates in its primary embodiment with a looped circulation passageway having a...
5685151 U.S. solar power supply  
A method and apparatus for collecting, converting, storing and using solar energy includes solar energy concentrating apparatus, a first apparatus containing a first fluid for transferring heat...
5664419 Method of and apparatus for producing power using geothermal fluid  
Power is produced using a two-phase geothermal fluid, utilizing a separator for separating the geothermal fluid into a steam branch and a brine branch. A vaporizer, containing an organic fluid, is...
5665242 Inhibition of silica precipitation  
A method for controlling fouling of a flashing vessel or heat-exchange surface exposed to a high-enthalpy geothermal brine tending to form silicon-containing scale. The method adds a...
5656172 pH modification of geothermal brine with sulfur-containing acid  
Sulfur-containing acid is produced at a geothermal energy source from hydrogen sulfide produced as part of a geothermal process and introduced into aqueous liquid brine to lower the pH of the...
5645693 Plant for sea water desalinizing using solar energy  
An apparatus for desalination of sea water by the utilization of solar energy, advantageously accompanied by electric power generation, containing a heat caption unit (1) serving as a heat source,...
5632147 Solar powered steam turbine generator  
A solar steam generator has a hollow steam rotor mounted for rotation in a closed compartment located within a larger housing. The rotor is made of heat conductive material and is supplied with...
5628190 Geothermal power plant and condenser therefor  
A geothermal power plant operating on geothermal fluid includes a source of low pressure geothermal steam, and a turbo-generator including a low pressure steam turbine to which the geothermal...
5613362 Apparatus and method for energy conversion using gas hydrates  
An encagement vessel contains water and a working gas capable of forming hydrate with the water. A heat exchange arrangement is associated with the encagement vessel for removing heat from the...
5608268 Solar chimney arrangement with a liquid filled non-evaporative area used to pre-heat a liquid filled evaporative area  
A solar chimney assembly including a chimney (1) for receiving fluid from a solar heat collector (6, 7), and a turbine (2) driven by the fluid. The solar heat collector, which increases the...
5598706 Method of and means for producing power from geothermal fluid  
Power is produced from geothermal fluid containing non-condensable gases whose main constituent is carbon-dioxide. The geothermal fluid is separated into steam and geothermal liquid, the steam...
5582691 Ocean thermal energy conversion (OTEC) system  
An improved ocean thermal energy conversion (OTEC) system which includes a novel combined evaporator/condenser. The combined evaporator/condenser further includes a plurality of evaporator spouts...
5582690 Method of and means for water desalinization  
Desalination of sea water is achieved using a solar pond that includes a halocline interposed between a convective upper wind mixed layer exposed to the ambient atmosphere, and a lower heat...
5582011 Method of and apparatus for generating power from geothermal fluid containing a relatively high concentration of non-condensable gases  
A power plant operating on geothermal steam containing more than about 5% non-condensable gases includes a topping steam turbine for expanding the steam to produce power and from which exhaust...
5555838 Ocean thermal energy conversion platform  
A method and apparatus for an OTEC platform are disclosed. The platform provides the high stability needed for OTEC applications. The platform includes a centrally located cold water pipe. The...
5551237 Methods for producing hydroelectric power  
A process of converting steam to hydro-electric power through a process of allowing steam to displace water from a tank for operating a turbine or pelton wheel. The process allows hydro-electric...
5548957 Recovery of power from low level heat sources  
A system based on a refrigeration cycle for converting low grade heat into useful work. A plurality of pressure vessels are interconnected with a common high pressure feed manifold and a common...
5531073 Rankine cycle power plant utilizing organic working fluid  
A Rankine cycle power plant includes a pair of multistage turbine modules each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to...
5526646 Method of and apparatus for producing work from a source of high pressure, two phase geothermal fluid  
Apparatus for producing from a source of geothermal fluid that contains a mixture of high pressure steam, brine and noncondensable gases includes a heat exchanger for receiving geothermal fluid...
5518554 Cascade process heat conversion system  
This invention discloses a solar energy system wherein some of the waste heat of a thermophotovoltaic system is made to operate a thermionic power generator. The waste heat of the thermionic power...
5515679 Geothermal heat mining and utilization  
Method and apparatus for recovering and utilizing thermal energy from subterranean hot rock by means of a self-powered closed system which transfers heat from the hot rock to a relatively cool...
5512145 Energy conversion system  
This invention relates to a method and apparatus for converting energy to hydrogen gas using an electrolyzer and a metal alloy hydride tank for hydrogen storage, wherein a passive load matching...
5497624 Method of and apparatus for producing power using steam  
A power plant operating on steam for producing electric power including a plurality of integrated power plant unit modules each having a steam turbine responsive to the steam and producing heat...
5488828 Energy generating apparatus  
An apparatus and method for obtaining energy is disclosed. The method includes heating a fluid in a liquid state by heat exchange with a heat source to generate a vapor of the fluid at a first...
5483798 Convection towers  
Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into...
5483797 Method of and apparatus for controlling the operation of a valve that regulates the flow of geothermal fluid  
The present invention provides a method of and apparatus for controlling the operation of a valve that regulates the flow of geothermal fluid that comprises geothermal brine and steam flowing...
5462668 Use of steam to condensate to dilute brine stream additives  
Additives are usually diluted before they are added to a geothermal brine processing stream. It has been found that one preferred diluent is the conditioned steam condensate produced after power...