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4779006 Hybrid solar-wind energy conversion system  
A system for producing electrical energy including a stack shaped and positioned generally as the letter "J" and having an intake portion, an exhaust portion and a conveying portion therebetween...
4776169 Geothermal energy recovery apparatus  
Geothermal energy may be recovered through an underground well drilled to a depth approaching the earth's magma by circulation of injected heat transfer fluids flowing along separate parallel...
4768345 Continuous thermal energy delivery from a periodically active energy source  
Continuous thermal energy delivery from a cyclically active thermal energy source having an ON period substantially exceeding an OFF period by passing working fluid through a central working fluid...
4766730 Gas ejecting system for main condenser in geothermal steam turbine plant  
A geothermal steam turbine plant comprises a steam turbine operatively connected to a production well, an indirect-contact type main condenser into which a geothermal steam including non-condensed...
4765144 Solar-powered Rankine cycle pumping engine  
The invention is a solar-powered, Rankine cycle, two fluid engine useable for many functions, especially for pumping liquids from the ground such as water or oil in remote locations. The engine...
4765913 Process for removing silica from silica-rich geothermal brine  
A process is provided for reducing the silica content in silica-rich geothermal brine having dissolved heavy metals, particularly from brine which is flashed from a high natural pressure to a...
4765914 Method of and apparatus for reduction of turbidity in a body of fluid  
The turbidity of a fluid is reduced by adding a treatment solution containing a flocculation agent to said fluid. The treatment solution has a density different from that of the fluid. It is added...
4765912 Geothermal brine clarifier process for removing solids from geothermal brine  
A process is provided for simultaneously clarifying brine in a geothermal facility and producing silica seed material for use within the facility. A clarifier having an agglomeration zone therein...
4763479 Method for the production of useable steam and non-toxic solids from geothermal brine  
A method is provided for producing power from geothermal brine comprising dissolved toxic elements without significant precipitation of toxic solids. When sludge produced by the process is washed,...
4760706 Method and system for current generation  
Method and system for generating electric power utilizing a coolant circuit, in which a coolant is evaporated at a lower level position, allowed to rise via tubing to a higher level position,...
4760705 Rankine cycle power plant with improved organic working fluid  
A Rankine cycle power plant utilizes as a working fluid and compounds selected from the group consisting of bicyclic hydrocarbons, substituted bicyclic aromatic hydrocarbons, heterocyclic bicyclic...
4757687 System for current generation  
An electric power generating system includes a substantially conically tapering tower adapted to provide for the condensation of a vaporized fluid which has risen to the top of the tower. The...
4745756 HDR closed loop steam generation  
A HDR closed loop geothermal steam generating system comprises of three large vertical bores driven in solid rock to a depth of 2 to 3 miles and terminating in an enlarged bottom chamber from...
4742682 Energy-saving, direct-contact, parallel-flow heat exchanger  
An energy-saving, direct-contact parallel-flow heat exchanger includes a vertically oriented tower open at the top and bottom for defining a gas-flow conduit. A spray-head adjacent to the top of...
4741398 Hydraulic accumulator-compressor for geopressured enhanced oil recovery  
A hydraulic accumulator-compressor vessel using geothermal brine under pressure as a piston to compress waste (CO2 rich) gas is used in a system having a plurality of gas separators in tandem to...
4739620 Solar energy power system  
A power system for use in converting solar energy into useful and stored energy available as output power capable of operating diverse types of power-driven units, such as electric generators, air...
4735382 Space craft cellular energy generating and storage device  
A space craft cellular energy generating and storage device for generating electrical power in space and storing the power for extended periods of time. The space craft generating and storage...
4728438 Process for reducing the concentration of suspended solids in clarified geothermal brine  
A process for reducing the concentration of fine, residual solids still remaining suspended in clarified geothermal brine overflow from a primary brine clarification stage in which hot, flashed,...
4726191 Sea water well and aquaculture preserve, and the combination with a power generation system  
A power generation system of the ocean thermal energy conversion type including one of a closed or open system and a working fluid capable of undergoing a change in state from a liquid to a vapor...
4719759 Method of and means for disposing of waste salts and brines  
Waste salts and brines are disposed of by constructing salt water solar pond power plants, concentrating the waste salts and brines, and then introducing them into the heat storage layers of the...
4718236 Apparatus and method for mineral recovery from geothermal and geopressured brines  
Improved apparatus and method in which brine of the geothermal and geopressured types is directed into one or more flash-crystallizer-separator units from a geothermal well. Such brine is...
4715183 Dual source external heating system for a heat pipe  
An external heating system for a heat engine such as a Stirling cycle engine which permits thermal energy to be provided by solar energy or fuel combustion sources. The system employs a complexly...
4712380 Utilization of thermal energy  
Various heat cycles are disclosed which make use of comparatively low grade heat such as that from hot rock geo-thermal sources, the cycles incorporating either a helical screw expander or a...
4707990 Solar powered Stirling engine  
The effectiveness of the lubrication system of a Stirling engine is maintained in a solar dish module for all directions of aiming of the dish by the journal mounting of the engine on the dish...
4703626 Ocean thermal energy conversion hydro well apparatus  
An apparatus is disclosed to generate electricity using ocean thermal and salinity gradients. An elongated chamber extends vertically downward from the surface of the ocean. Warm, high-salinity...
4696802 Drilling geothermal wells with removal of H2 S  
Geothermal wells are drilled and the raw steam containing H2 S gas and debris that is released is treated with an aqueous solution containing ferric chelate and one or more water soluble cationic...
4682582 Solar energy collector and sun motor utilizing same  
A solar energy collector comprises at least a first lens system having a first convex outer light receiving face facing generally in a first direction and having a first series of condensing lens...
4676068 System for solar energy collection and recovery  
A system for the collection of solar radiation and the recovery of thermal energy therefrom includes solar radiation receiver means at or near the focus of a solar radiation concentrating means...
4665705 Geothermal plant silica control apparatus and method  
Apparatus and method for minimizing silica scaling in steam flash vessels employed in a geothermal power plant energized by steam flashed from high temperature geothermal brine derived from a...
4666376 Solar powered pump assembly  
An apparatus for converting low level thermal radiation into mechanical work. The apparatus incorporates a collector (11) to receive and concentrate low level thermal energy to generate a pressure...
4658805 Thermo-hydraulic power supply  
A radiant energy utilization device including an aiming detector sensing the relative angle of radiation received and outputting signals in accordance therewith to control aiming of the device or...
4646523 Wire engine for water pumps  
Mechanical energy is provided in the form of continuous reciprocating motion by causing repeated temperature alternations in wire arrays made of alloys of shape memory metals when alternating...
4644750 Heat recovery systems  
Geothermal energy is recovered from an underground zone of relatively hot strata via a borehole into which is inserted a heat pipe system containing a working fluid, the heat pipe system...
4642987 Process and equipment for the utilization of geothermic energy  
Process and equipment serving for the utilization of geothermic energy. In the course of the process water is introduced in a vapor producing pipe driven into the rock under the terrain and by...
4641498 Geothermal turbine  
A geothermal turbine for converting the energy of two-phase geothermal fluids to rotary power includes a housing having a generally cylindrical rotor chamber with a circular manifold, and a...
4628212 Oceano-thermosteric power plant  
An oceano-thermosteric power plant is provided with plural evaporators and plural condensers, alternate parts of which are not operated at night and in winter on light load and hence a high...
4622949 Floating solar pond and associated power plant  
A floating solar pond includes a reservoir of an aqueous solution having a predetermined density, and structure for enclosing a body of solution and segregating it from the reservoir. The enclosed...
4616140 System and a method for conversion of solar radiation into electric power  
A system for conversion of solar radiation into electric power comprises a single hot gas engine and two identical electric generators mounted at the two ends of the power output shaft of the hot...
4615808 Acidification of steam condensate for incompatibility control during mixing with geothermal brine  
A method is provided for combining a high pH steam condensate with a flow of a acidic geothermal brine from which the steam is extracted so as to inhibit the formation of suspended particulate...
4603553 Ballistic cold water pipe  
In order to bring cold water from the depths of a body of water, a long pipe is extended into the body of water. Arrangements are provided for pumping the water out of the pipe. A nozzle is then...
4602614 Hybrid solar/combustion powered receiver  
An improved hybrid solar/combustion powered receiver, for use e.g. with a hot gas engine, the receiver being of the type having a housing and an aperture for admitting solar radiation to the...
4598550 Radiant heat engine  
An engine powered by radiant thermal energy wherein elongated thermally expandable members are tensioned radially out from a centrally located floating bearing to which the converging ends of the...
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...
4586339 Thermal energy conversion  
In heat transfer from a warm water source, efficiency is improved in a thermal energy conversion (TEC) by increasing the temperature of heat supplied to a turbine system substantially above the...
4586334 Solar energy power generation system  
An apparatus for producing, in a controlled manner, electrical energy from a solar powered Stirling engine by storing solar energy in a phase change medium and inserting and withdrawing heat...
4581897 Solar power collection apparatus  
This invention provides a solar power collection apparatus, with a plurality of Earth surface supported reflectors (heliostats) which reflect sunlight onto a solar receiver which is upheld in an...
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...
4577618 Method of and apparatus for dynamically stabilizing the wind-mixed layer of a solar-water pond  
The wind-mixed layer of a salt-water solar pond is dynamically stabilized against wind by creating a two-layer flow regime in the wind-mixed layer. Lighter less dense water flows in one direction...
4576006 Geothermal hot water transportation and utilization system  
Disclosed is a system for transporting geothermal hot water taken up at an underground bottom portion of a geothermal production well up to the ground surface, efficiently with a loss suppressed...
4574076 Removal of hydrogen sulfide from geothermal steam  
A process for removing hydrogen sulfide from saturated steam is described whereby the steam and hydrogen sulfide entrained therein are contacted under conditions of turbulent flow with hydrogen...