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| Number | Title | Issue Date |
| 8109094 | System and method for aquifer geo-cooling A geo-cooling system of specified cooling capacity for cooling a known heat load is disclosed. The system includes a cool water aquifer, a cool water production well and a heated water injection well. The cool water production well is open to the cool water aquifer ... | 02/07/2012 |
| 8042338 | Atmospheric temperature difference power generator This invention consists of a process for utilizing the atmospheric temperature variation with height to produce useful energy. It is accomplished by the use of a lighter than air condensable fluid or mixture of fluids circulating between heat exchangers at different... | 10/25/2011 |
| 8020382 | Closed loop, hot dry rock heat recovery process The present invention is a closed loop system of heat recovery in hot dry rock or in water-containing formations for generation of electrical power. Recovery of heat from such formations is accomplished by way of multiple horizontal levels of generally radially dril... | 09/20/2011 |
| 8001784 | Hydrothermal energy and deep sea resource recovery system A system that utilizes the naturally superheated fluids available from hydrothermal vents to harness the almost limitless quantities of heat energy they contain. It consists of one major system that has three parts: (i) funnel, (ii) pipes, and (iii) any combination ... | 08/23/2011 |
| 7984613 | Geothermal power generation system and method for adapting to mine shafts 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 and natural geological formations into a substantial source of energy ... | 07/26/2011 |
| 7975482 | Method and device for the utilization of supercritical subsurface steam in combination with supercritical thermal and hydraulic power stations Disclosed are a method and a device for utilizing supercritical subsurface steam as combined supercritical thermal and hydraulic power stations at an efficiency of 50 percent, using molten bath superdeep drilling technology, a hydrofrac process, and the special prop... | 07/12/2011 |
| 7900450 | Thermodynamic power conversion cycle and methods of use A high efficiency thermodynamic power conversion cycle is disclosed using thermal storage, atmospheric heat exchangers, and wind channeling in a synergistic method. Using the preferred configuration with ground source water, solar collectors, and heat pump including... | 03/08/2011 |
| 7891188 | Apparatus for producing power using geothermal liquid The present inventive subject matter is drawn to an apparatus for producing power using geothermal liquid comprising: a geothermal power plant for producing power using heat contained in geothermal liquid supplied thereto; and heating means apparatus for heating a s... | 02/22/2011 |
| 7891187 | Multi-chamber heat accumulator for storing heat energy and for generating electrical energy A multi-chamber heat accumulator for storing heat energy as well as for generating electrical energy comprises a pit structure having a bottom, a sidewall, and a cover. The pit structure comprises at least one inner zone with a first solid matter pit filling and at ... | 02/22/2011 |
| 7849690 | Self contained in-ground geothermal generator A method of using geothermal energy to produce electricity by lowering a geothermal generator deep into pre-drilled holes below the Earth's surface. A geothermal generator includes a boiler, a turbine compartment, an electric generator, a condenser and an electric c... | 12/14/2010 |
| 7810331 | Method for capturing energy from mechanical actions associated with recovery of underground fluids A method for capturing energy from mechanical actions associated with recovery of underground fluids, and for improving the economic feasibility of low producing, but viable, oil wells. The present method captures energy associated with an oil well pump device and w... | 10/12/2010 |
| 7797940 | Method and system for producing power from a source of steam The present invention provides a power plant system for producing power using a source of steam, comprising: a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through the vaporizer; at least one turbine whe... | 09/21/2010 |
| 7788924 | System and method for in-line geothermal and hydroelectric generation A stack system and method for in-line geothermal and hydroelectric generation from recovered natural gas-fired water/steam process waste heat. The stack system and method is a new way of reusing natural gas fired water/steam process waste heat to make more electrici... | 09/07/2010 |
| 7775045 | Method and system for producing power from a source of steam The present invention provides a power plant system for producing power using a source of steam, comprising a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through the vaporizer; at least one turbine wher... | 08/17/2010 |
| 7748219 | method and apparatus to convert low temperature thermal energy to electricity Methods and systems are disclosed to convert low temperature thermal energy to electricity. An example apparatus disclosed herein includes an electrical generating unit to receive heat energy to produce electricity, a concentrator including a heat engine, a liquid p... | 07/06/2010 |
| 7647773 | Ground source heat pump well field design and control strategy for large tonnage The present invention features geothermal systems that use of a well field open loop scheme by interconnecting the well field through a system of mains and controlled branches, the latter composed of multiple (2-5) wells. The proposed design lends itself to the use ... | 01/19/2010 |
| 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 and natural geological formations into a substantial source of energy ... | 11/24/2009 |
| 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 where electricity, heat, carbon-dioxide, and water are generated. The... | 10/27/2009 |
| 7472548 | Solar augmented geothermal energy An apparatus and a method is disclosed for storage of solar energy in a subsurface geologic reservoir. The method includes transferring concentrated solar thermal energy to a fluid, thereby generating a supercritical fluid. The supercritical fluid is then injected i... | 01/06/2009 |
| 7472549 | Monocoque turbo-generator A monocoque turbo-generator device is provided that is capable of cooling and lubricating itself and providing a non-leaking magnetic drive system that maintains the leak proof integrity of the device. This may be accomplished using propellant gases of the turbine a... | 01/06/2009 |
| 7448214 | Geothermal hydrogen production facility and method A system for geothermal hydrogen production comprising feed water, an input pipe extending into the earth to a sufficient depth to acquire geothermal heat, the geothermal heat capable of raising the temperature of the feed water to change the feed water from a mostl... | 11/11/2008 |
| 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 blades and a series of rotor blades, each stator blade of the series of st... | 09/09/2008 |
| 7367399 | Loop systems and methods of using the same for conveying and distributing thermal energy into a wellbore Systems and methods are provided for treating a wellbore using a loop system to heat oil in a subterranean formation contacted by the wellbore. The loop system comprises a loop that conveys a fluid (e.g., steam) down the wellbore via a injection conduit and returns ... | 05/06/2008 |
| 7356993 | Method of converting energy The invention provides a method of converting heat energy to a more usable form using a multi-component working fluid mixture that contains ammonia and water. The working fluid is operated in a thermodynamic cycle that includes liquid compression (30), vapori... | 04/15/2008 |
| 7347057 | Control of dual-heated absorption heat-transfer machines An absorption, heat-transfer system with an operationally interconnected generator, absorber, condenser, and evaporator; at least two separate heat sources for heating the generator; and a controller for controlling the heat sources. The controller, e.g., a programm... | 03/25/2008 |
| 7340899 | Solar power generation system An economical solar generator system is provided wherein the solar energy collector is constructed from a plurality of heat exchangers of the kind used as evaporators in automobile air conditioners. The solar generator system includes a plurality of said heat exchan... | 03/11/2008 |
| 7334406 | Hybrid geothermal and fuel-cell system A hybrid energy system heats or cools a plant with a geothermal unit powered at least partly by a fuel cell, which may also power other devices. The thermal fluid for the geothermal unit also cools the fuel cell via a heat exchanger. A digital controller bypasses a ... | 02/26/2008 |
| 7331179 | System and method for production of hydrogen A technique is disclosed for a system and method for combined production of power and hydrogen utilizing the heat from a first working fluid heated by a geothermal energy source using a steam generator and an electrolyzer designed to receive the steam produced by th... | 02/19/2008 |
| 7320221 | Method and apparatus for using geothermal energy for the production of power An apparatus and method for enhancing the flow of geothermal fluid from at least one injection well to at least one production well, which comprises a first horizontal geothermal well, which is used as the injection well, and into which water is injected; a second h... | 01/22/2008 |
| 7318315 | Method of combining wastewater treatment and power generation technologies Applicant's preferred embodiment utilizes municipal wastewater effluent to replenish a depleted geothermal field. Condensate produced by expanding steam produced in the geothermal field through a steam turbine-generator may be pooled with cooked water collected from... | 01/15/2008 |
| 7305829 | Method and apparatus for acquiring heat from multiple heat sources The present invention relates to systems and methods for implementing a closed loop thermodynamic cycle utilizing a multi-component working fluid to acquire heat from two or more external heat source streams in an efficient manner utilizing countercurrent exchange. ... | 12/11/2007 |
| 7287381 | Power recovery and energy conversion systems and methods of using same In various illustrative examples, the system may include heat recovery heat exchangers, one or more turbines or expanders, a desuperheater heat exchanger, a condenser heat exchanger, a separator, an accumulator, and a liquid circulating pump, etc. In one example, a ... | 10/30/2007 |
| 7284376 | Method of and apparatus for cooling a seal for machinery A method and an apparatus for producing power from a heat source comprising a nonane heater/vaporizer, an intermediate fluid vapor turbine mounted on a shaft that receives and expands the vaporized nonane, an organic fluid vaporizer that receives the expanded vapori... | 10/23/2007 |
| 7264654 | Process and system for the condensation of multi-component working fluids A process and system for condensing a multi-component fluid is disclosed, where the process and system are designed to provide a substantial increase in a heat transfer coefficient during condensation of multi-component fluids resulting in a drastic reduction in siz... | 09/04/2007 |
| 7260934 | External combustion engine An organic Rankine engine used to power a vehicle is provided with a quick-start system of pumps, electric heaters or pistons to generate a pressure differential across the motor, prior to the engine reaching operating conditions. ... | 08/28/2007 |
| 7251938 | System and method for recovering geothermal energy and for converting recovered geothermal energy into useful power Recovery and conversion of geothermal energy from geologically stable, hot, dry rock is disclosed. Deep boreholes are drilled to form a system of feed and return conduits in the non-porous formation. Fluid is passed through the conduits where heat energy is transfer... | 08/07/2007 |
| 7251939 | General method for disposal of produced water A method and apparatus useful for disposing of the high volumes of produced water associated with coal bed methane natural gas wells. The method taught is to create steam from the produced water and vent the steam into the atmosphere. The apparatus taught utilizes a... | 08/07/2007 |
| 7246492 | Progressive solar based power generating system An apparatus for converting solar energy to electrical energy and continue to generate electricity even when the solar radiation is not available by directing solar radiation to heating plates, which were mostly immersed in a steam generator to induce water temperat... | 07/24/2007 |
| 7225620 | Diffusion driven water purification apparatus and process An apparatus for purifying water, such as for desalinization, includes a source of a heated air stream, the heated air stream having a temperature above an ambient temperature. A diffusion tower having high surface area material therein receives a water stream inclu... | 06/05/2007 |
| 7219722 | Apparatus and methods for powering downhole electrical devices A drilling system comprises a tubular member disposed in a wellbore having a downhole assembly disposed therein. At least one electrical device is disposed in the downhole assembly. A fuel cell is disposed in the downhole assembly and operatively coupled to the elec... | 05/22/2007 |
