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| Number | Title | Issue Date |
| 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 |
| 7325401 | Power conversion systems Power generation systems and methods are provided with features directed to various innovations including ones relating to the conversion of concentrated solar and biomass energy to electricity, load-shifting of electrical power supply systems, gas turbine devices a... | 02/05/2008 |
| 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 |
| 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 |
| 7065969 | Power cycle and system for utilizing moderate and low temperature heat sources A new thermodynamic cycle is disclosed for converting energy from a low temperature stream, external source into useable energy using a working fluid comprising of a mixture of a low boiling component and a higher boiling component and including a higher pressure ci... | 06/27/2006 |
| 7065967 | Process and apparatus for boiling and vaporizing multi-component fluids A new boiler or heat transfer apparatus is disclosed for use with multi-component working fluids which includes a vapor removal apparatus designed to maintain a substantial compositional identity between the boiling liquid and its vapor along a length of the apparat... | 06/27/2006 |
| 7062913 | Heat engine A heat engine (10) achieves operational efficiencies by: 1) recovering waste heat from heat engine expander (14) to preheat heat-engine working fluid, 2) using super-heated working fluid from compressor (402) to pre-heat heat-engine working flui... | 06/20/2006 |
| 7040095 | Method and apparatus for controlling the final feedwater temperature of a regenerative rankine cycle This invention relates to a method and apparatus for controlling the final feedwater temperature associated with a regenerative Rankine cycle, said cycle commonly used in thermal systems such as conventional power plants. This invention involves the placement of a n... | 05/09/2006 |
| 7021063 | Reheat heat exchanger power generation systems A reheat heat exchanger is provided particularly for use in Rankine cycle power generation systems. The reheat heat exchanger includes a high pressure path between a high pressure inlet and a high pressure outlet. The reheat heat exchanger also includes a low pressu... | 04/04/2006 |
| 7007474 | Energy recovery during expansion of compressed gas using power plant low-quality heat sources A method of recovering energy from a cool compressed gas, compressed liquid, vapor, or supercritical fluid is disclosed which includes incrementally expanding the compressed gas, compressed liquid, vapor, or supercritical fluid through a plurality of expansion engin... | 03/07/2006 |
| 6951106 | Integration construction between a boiler and a steam turbine and method in preheating of the supply water for a steam turbine and in its control The present invention concerns an integration construction between a steam boiler provided with a combustion chamber and a steam turbine. The steam is conducted from the steam boiler (10) along a connector to the steam turbine (11) for rotating an elec... | 10/04/2005 |
| 6941757 | Power cycle and system for utilizing moderate and low temperature heat sources A new thermodynamic cycle is disclosed for converting energy from a low temperature stream, external source into useable energy using a working fluid comprising of a mixture of a low boiling component and a higher boiling component and including a higher pressure ci... | 09/13/2005 |
| 6910334 | Power cycle and system for utilizing moderate and low temperature heat sources A new thermodynamic cycle is disclosed for converting energy from a low temperature stream, external source into useable energy using a working fluid comprising of a mixture of a low boiling component and a higher boiling component and including a higher pressure ci... | 06/28/2005 |
| 6904754 | Steam generator for liquid metal reactor and heat transfer method thereof Disclosed herein is a steam generator for a liquid metal reactor and a heat transfer method thereof, and more particularly a steam generator for a liquid metal reactor having intermediate fluid forcibly circulated therein and structurally improved coiled heat transf... | 06/14/2005 |
| 6647726 | Method and arrangement for producing electrical energy at a pulp mill The invention relates to a method and an arrangement in the production of electric energy in a boiler plant of a pulp mill. Black liquor having a dry solids content of more than 80% and combustion air are fed into a furnace of a recovery boiler for combus... | 11/18/2003 |
| 6170264 | Hydrocarbon combustion power generation system with CO2 sequestration A low or no pollution engine is provided for delivering power for vehicles or other power applications. The engine has an air inlet which collects air from a surrounding environment. At least a portion of the nitrogen in the air is removed using a techniq... | 01/09/2001 |
| 6125634 | Power plant A method for operating a power plant includes generating flue gas in a furnace of a fossil-fueled steam generator and generating steam for a steam turbine from heat contained in the flue gas. The steam is superheated prior to entry into the steam turbine ... | 10/03/2000 |
| 6076476 | Method of and apparatus for preventing emission of dioxins in incineration facility An apparatus for preventing the emission of dioxins in an incineration facility including an incinerator having a boiler, and an exhaust gas treatment facility for treating exhaust gas discharged from a flue of the boiler. This apparatus further includes ... | 06/20/2000 |
| 5878675 | Flue gas desulfurizer, boiler equipment and thermal electric power generation equipment A flue gas desulfurizer having an absorption tower for bringing untreated flue gas into gas-liquid contact with an absorbent slurry, wherein there is provided heat recovery means for recovering heat from the flue gas passing through the flue gas inlet sec... | 03/09/1999 |
| 5836162 | Feedwater heater drain recycle system A system for draining condensed steam from a closed high pressure feedwater heater installed in a steam turbine power generation cycle, and recycling the drains into the feedwater system at a point between the inlet to the main feedwater pump and an immed... | 11/17/1998 |
| 5699666 | Steam generating power station, process for operating the same, and interlinking network and process for its operation. A steam generating power plant includes a generator connected to a network, a steam turbine driving the generator, a steam bleeder line being connected to the steam turbine and having a load-dependently adjustable valve, a system having a superconducting ... | 12/23/1997 |
| 5507145 | Steam generating power station, process for operating the same, and interlinking network and process for its operation A steam generating power plant includes a generator connected to a network, a steam turbine driving the generator, a steam bleeder line being connected to the steam turbine and having a load-dependently adjustable valve, a system having a superconducting ... | 04/16/1996 |
| 5431016 | High efficiency power generation A closed-loop Brayton cycle (topping system) takes in heat energy at very high temperatures and rejects heat energy as input heat energy to a closed-loop Rankine cycle (base system). Heat energy input to the base system comes partially or solely from the ... | 07/11/1995 |
| 5404724 | Boiler feedpump turbine drive/feedwater train arrangement An improved cycle arrangement for a steam turbine system in which an auxiliary turbine drives a boiler feedwater pump. The turbine system includes a primary turbine driving an electric power generator. The primary turbine includes a high pressure section ... | 04/11/1995 |
| 5377489 | Internal moisture separation cycle for a low pressure turbine A steam turbine system including a low pressure (LP) turbine has a plurality of moisture extraction points at which a steam-water mixture is extracted and passed through a respective one of a corresponding plurality of heat exchangers. Each exchanger pass... | 01/03/1995 |
| 5140818 | Internal moisture separation cycle A steam turbine system including a low pressure (LP) turbine has a plurality of moisture extraction points at which a steam-water mixture is extracted and passed through a respective one of a corresponding plurality of heat exchangers. Each exchanger pass... | 08/25/1992 |
| 5079922 | Moisture-separator-reheater drain cooler system A steam turbine system has a plurality of moisture-separator-reheaters (MSR) each connected via a respective drain line to a corresponding drain receiver. Each drain receiver includes a further drain line coupled through a flow control valve to a common l... | 01/14/1992 |
| 4955200 | Reheater piping and drain cooler system A method and apparatus for improving a steam-to-steam reheat system employing the drain cooler concept in a steam turbine is disclosed. The large and complicated drain receiver of the prior art is eliminated, thereby removing a source of unreliable perfor... | 09/11/1990 |
| 4953355 | Steam turbine installation with adjusted bleeding A steam turbine installation with bleeding adjusted to a predetermined pressure P, the installation driving a load and including a bleed outlet disposed between two successive stages, wherein the bleed pressure P is adjusted over a range D of bleed rates ... | 09/04/1990 |
| 4948331 | High pressure industrial turbine casing A casing for a high pressure steam turbine is provided which is adapted to be stocked for subsequent customization. The casing is made as an incomplete casing with a closed chamber between an inner and outer wall and extending axially along a significant ... | 08/14/1990 |
| 4897999 | Steam power plant In a multi-stage steam power plant a portion of the bleed steam is passed through a heat exchanger in the combustion air input duct to preheat the combustion air. The condenser output water is also passed through a heat exchanger in the combustion air inp... | 02/06/1990 |
| 4825657 | Apparatus and method for improved utilization of steam-to-steam reheater drains An improved method of heating feedwater streams in a steam-to-steam reheating system for turbine generators is disclosed in which a drain cooler is located to receive the reheater drain and pass it in heat exchange relationship with the discharge of the h... | 05/02/1989 |
| 4819436 | Deaerator pressure control system In a steam turbine power plant, a deaerator is heated and pressurized by extraction steam from the steam turbine for the purpose of preheating feedwater to the power plant boiler. Under certain conditions, the available steam to the deaerator is insuffici... | 04/11/1989 |
| 4651533 | Protection-driving method of a feedwater heater and the device thereof A steam turbine power plant having a feedwater heater, a boiler, a steam turbine driven by steam generated in the boiler, and a condenser for condensing steam exhausted from the steam turbine. An extracting steam pipe is provided which includes a control ... | 03/24/1987 |
| 4637350 | System for recovering drain A system for recovering drain which recovers two or more flows or drain of different temperatures, which is applied to a generating plant provided with feed-water heaters in which drain is recovered into a condensation system downstream from a condenser t... | 01/20/1987 |
| 4617878 | Process and device for recovery of thermal energy in a steam generating system In a steam generating system, steam condensate extracted from steam used to reheat boiler water in heaters (H1, . . . , H4) is revaporized in the recuperators-vaporizers (RV1, . . . , RV3) by heat exchange contact with the flue gas from boiler (B). The st... | 10/21/1986 |
| 4561255 | Power plant feedwater system A feedwater heater system for a steam turbine power plant is provided which incorporates a liquid-to-liquid heat exchanger in addition to a plurality of vapor-to-liquid feedwater heaters. The advantage of this configuration is that the potential magnitude... | 12/31/1985 |
| 4498301 | Cooling device of steam turbine A cooling device for a steam turbine wherein a portion of boiler feedwater for cooling a casing of the turbine is supplied, after being heated by high pressure feedwater heaters, to a cooling fluid passage for the casing as a cooling fluid satisfying the ... | 02/12/1985 |
| 4439687 | Generator synchronization in power recovery units There is disclosed a method and a control system for synchronizing the frequency of electrical current produced by a generator with the frequency of electrical current in an electric power grid so that the output of the generator can be provided to the gr... | 03/27/1984 |
| 4433545 | Thermal power plants and heat exchangers for use therewith A thermal power plant having multi-staged steam turbines and heat exchangers therebetween, each heat exchanger extracting heat from the supply to an upstream stage for adding heat to the supply of the next successive downstream stage; a portion of the sup... | 02/28/1984 |
