Class / Patent application number | Description | Number of patent applications / Date published |
060641500 | With fluid flashing | 12 |
20080223041 | Geothermal canal with hydrostatic system for use in a geothermal power plant - A Geothermal Canal With Hydrostatic System for Use in a Geothermal Power Plant, providing an apparatus which collects heat from hot rocks located beneath the earth's surface and transfers the heat into water to be flashed into steam for the production of electricity. This invention is for use in all locations, including those with low sub-surface temperatures and those with no near-surface thermal reservoirs. This invention comprises (a) a Geothermal Canal which comprises (i) a vertical shaft or shafts, 10 feet in diameter, extending to a depth of at least 10,000 feet; (ii) a horizontal shaft or shafts, 10 feet in diameter, which extends from the vertical shaft or shafts and is at least 1,000 feet in length; and (iii) an intake grate; (b) a Hydrostatic System which equalizes the pressure in the Geothermal Canal, allows for independent control of the pressure in different areas of the Geothermal Canal, and allows objects and water to pass through the Geothermal Canal; (c) a Material Transfer System which allows material to be transported throughout the Geothermal Canal; (d) a Borehole System which extracts heat from surrounding, hot rock by driving water through hot rock either via a radiator-like system or via a hot fractured rock system; and (e) a Power Plant which flashes the heated water into steam and convert it into electricity. | 09-18-2008 |
20110048006 | SOLAR DESALINIZATION PLANT - A desalinization plant and process utilizes solar radiation to produce steam from seawater which is then used to generate freshwater and electricity. | 03-03-2011 |
20110100003 | 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 - 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. | 05-05-2011 |
20110219769 | Return carbon dioxide to flashed geothermal brine to control scale deposition in a geothermal power plant - Geothermal brine always contains some carbon dioxide in solution. Separating steam from geothermal brine removes the carbon dioxide, sharply increasing the pH of the brine and causing precipitation of pH sensitive minerals, including calcium carbonate, magnesium silicate and other metal silicates, clays, and metal sulfides. The binary heat exchanger in a steam-binary hybrid geothermal power plant is especially sensitive to scale deposition from flashed geothermal brine, and application of expensive scale inhibitors is required. | 09-15-2011 |
20120198844 | System and Method For Producing Geothermal Energy - The present techniques provide methods and systems for producing geothermal energy. The techniques include extracting geothermal energy from regions in a reservoir so as to reduce the stress in proximate regions. The geothermal energy is extracted from the proximate regions, and the extraction of geothermal energy is staged across subsequent regions in the reservoir. | 08-09-2012 |
20120312016 | Geothermal Energy Method and Apparatus - A deep well geothermal system where the bottom pressure exceeds the critical pressure for a working fluid (for water, approximately 3200 psi) at a place where the well bottom temperature is above the critical temperature of the working fluid (for water approximately 374 degrees C.). For water, this depth would typically be around 7442 feet. Three concentric pipes make up the well. The outer pipe passes working fluid to the bottom of the well. It becomes super-heated vapor and is passed up though the inner pipe to a turbine. The middle pipe typically contains a vacuum and acts as an insulator around the inner pipe. The flow of vapor out of the turbine can be cooled and condensed and returned to the outer pipe to form a closed system. | 12-13-2012 |
20140075938 | METHOD AND APPARATUS FOR PRODUCING POWER FROM GEOTHERMAL FLUID - A method for producing power from geothermal fluid includes: separating the geothermal fluid in a flash tank into geothermal vapor comprising steam and non-condensable gases, and geothermal brine; supplying the geothermal vapor to a vaporizer; vaporizing a preheated motive fluid in the vaporizer using heat from the geothermal vapor to produce heat-depleted geothermal vapor and vaporized motive fluid, wherein the heat content in the geothermal vapor exiting the flash tank is only enough to vaporize the preheated motive fluid in the vaporizer; expanding the vaporized motive fluid in a vapor turbine producing power and expanded vaporized motive fluid; condensing the expanded vaporized motive fluid in a condenser to produce condensed motive fluid; and preheating the condensed motive fluid in a preheater using heat from the heat-depleted geothermal vapor and the geothermal brine, thereby producing the preheated motive fluid, make-up water and heat-depleted geothermal brine. | 03-20-2014 |
20140116046 | POWER GENERATING SYSTEM - A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged. | 05-01-2014 |
20140165564 | METHOD FOR SUPPRESSING SCALE AND GEOTHERMAL POWER GENERATING DEVICE - A scale inhibition method for injecting an alkaline agent and a chelating agent into a fluid containing at least silica and calcium ions, and inhibiting generation of scale, includes feeding the chelating agent and the alkaline agent into piping channeling the fluid, mixing the fluid while causing the fluid to flow in a chemical-mixing part provided in the piping, and when either a pressure difference between the pressures or a flow rate difference between the rates of fluid flow at an inlet and an outlet of the chemical-mixing part exceeds a preset upper threshold, increasing the amount of the chelating agent fed, and feeding the chelating agent at an increased feed amount until the pressure difference or flow rate difference falls below a preset lower threshold. | 06-19-2014 |
20140290244 | BINARY POWER GENERATION SYSTEM - A binary power generation system includes: a first pressure reducing steam-liquid separator which reduces the pressure of geothermal heat source water to separate the geothermal heat source water into water steam and hot liquid water; a steam turbine which is driven by geothermal water steam; a medium turbine which is driven by medium vapor obtained by evaporating a medium liquid with the geothermal heat source water as a heat source; a condenser/evaporator which is configured to transfer the heat of the water steam discharged from the steam turbine to the medium liquid so that the water steam is condensed and the medium liquid is evaporated; and a gas cooler which leads a working medium discharged from the medium turbine to thereby cool condensed water obtained by the condenser/evaporator and separate and discharge noncondensable gas contained in the condensed water. | 10-02-2014 |
20140366535 | PROCESS FOR PRODUCING GEOTHERMAL POWER, SELECTIVE REMOVAL OF SILICA AND IRON FROM BRINES, AND IMPROVED INJECTIVITY OF TREATED BRINES - This invention relates to a method for producing geothermal power using geothermal brines while producing a reduced silica and iron brine having improved injectivity. The resulting compositions include a composition with reduced silica, iron, and lithium having reduced quantity of total suspended solids. | 12-18-2014 |
20150337811 | SOLAR AUTOMATIC HEAT COLLECTING AND EQUALIZING TUBE, AUTOMATIC HEAT EQUALIZING TROUGH-TYPE MODULE, SOLAR-THERMAL COMPLEMENTARY POWER GENERATION SYSTEM COMPRISING THE SAME, AND POWER GENERATION METHOD USING THE SAME - A solar automatic heat collecting and equalizing tube, including: a glass tube, an absorption tube, and a baffle. The glass tube is sleeved on the absorption tube. The absorption tube is coated with a heat absorption layer. The space between the glass tube and the absorption tube is vacuum. The baffle is disposed in the inner cavity of the absorption tube and is configured to drive a fluid in the absorption tube to tumble up and down alternately. The baffle is spiral in shape and fixed in the absorption tube. | 11-26-2015 |