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Power system involving change of state

Subclass of:

060 - Power plants

060643000 - MOTIVE FLUID ENERGIZED BY EXTERNALLY APPLIED HEAT

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
060671000 Motive fluid comprises a material other than steam or water 30
060676000 Including plural distinct boilers, heat supplies or external sources of vapor 11
060679000 Having motive fluid reheater between serially connected motors 6
060677000 Serially connected motor with intermotor supply or withdrawal of motive fluid 3
20110314819SYSTEM INCLUDING FEEDWATER HEATER FOR EXTRACTING HEAT FROM LOW PRESSURE STEAM TURBINE - A system is disclosed including a low pressure steam turbine; an air-cooled condenser (ACC) in fluid connection with the low pressure (LP) steam turbine, the ACC for receiving a portion of steam from an exhaust of the LP steam turbine; a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine; and a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater.12-29-2011
20090205338High efficiency dual cycle internal combustion engine with steam power recovered from waste heat - A high efficiency combined cycle internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber outward of the piston, a fixed cylinder cap sealingly and slideably mounted within the piston and a steam expansion/recompression chamber inside the piston adjacent the cylinder cap. The cylinder cap can be unheated or heated externally to reduce condensation of steam entering the steam chamber from a steam generator fired by waste combustion heat. Steam remaining in the cylinder when a steam exhaust valve closes at the top center position is recompressed during an inward stroke of the piston up to admission pressure prior to admitting the next charge of steam. One valve or a pair of retractable steam inlet valves connected in series within the cylinder cap act in cooperation with steam recompression and clearance volume to achieve an effective zero steam chamber clearance and a gain in mean Rankine cycle temperature to maximize efficiency. The amount of steam admitted each outward stroke is continuously regulated, e.g. by shifting the phase of one steam admission valve of a pair to vary their overlap for determining the steam mass admitted during each cycle to reduce specific fuel consumption. Other valves balance steam displacement with the steam generator output to use steam more efficiently. Engine coolant can be evaporated in a combustion chamber cooling jacket to form steam which is then superheated in a combustion exhaust manifold.08-20-2009
20110030374STEAM TURBINE FACILITY - Provided is a steam turbine facility capable of suppressing the possibility of vibration occurrence and a drastic increase in facility cost, thereby realizing an increase in size of the facility, even if steam conditions of 650° C. or higher are adopted. In a steam turbine facility including a high-pressure turbine, an intermediate-pressure turbine, and a low-pressure turbine, the high-pressure turbine is separated into a first high-pressure turbine part on a high-temperature and high-pressure side and a second high-pressure turbine part on a low-temperature and low-pressure side, the intermediate-pressure turbine is separated into a first intermediate-pressure turbine part on the high-temperature and high-pressure side and a second intermediate-pressure turbine part on the low-temperature and low-temperature side, the first high-pressure turbine part and the first intermediate-pressure turbine part are integrated to form a first integrated part, the second high-pressure turbine part and the second intermediate-pressure turbine part are integrated to form a second integrated part, at least any one of the rotors and casings of the turbines into which steam with a temperature of 650° C. or higher is introduced are constructed by joining together a plurality of members formed from Ni-based alloy through welding as a whole.02-10-2011
060675000 Gravity motor actuated by weight of condensed vapor 1
20100212321HEAT EXCHANGERS AND TOWER STRUCTURE FOR DENSITY-DRIVEN POWER GENERATION - A power-generating tower comprises: at least one of the lower heat-exchange assemblies, at least one of the upper heat-exchange assemblies, a tower structure arranged to support each upper heat-exchange assembly, at least one ascending circulating-fluid column within the tower structure, at least one descending circulating-fluid column within the tower structure, and at least one turbine. Each ascending column is arranged and connected to receive the circulating fluid from at least one of the lower heat-exchange assemblies and to convey the circulating fluid thus received upward and into at least one of the upper heat-exchange assemblies. Each descending column is arranged and connected to receive the circulating fluid from at least one of the upper heat-exchange assemblies and to convey the circulating fluid thus received downward and into at least one of the lower heat-exchange assemblies. The turbine is arranged to be driven by flow of circulating fluid.08-26-2010
Entries
DocumentTitleDate
20110192164RANKINE ENGINE WITH EFFICIENT HEAT EXCHANGE SYSTEM - The rankine engine with efficient heat exchange system provides a rapidly rechargeable thermal energy storage bank operably connected to a heat engine capable of use in an electric power generation facility. Microwave energy is supplied to the system via a network of waveguides. Thermal storage bank has a slurry in a heat exchanger capable of sustaining operation of the engine without requiring the microwave source. The slurry provides a mixture of powdered stainless steel and silicone oils functioning as the working fluid in the hot side of the heat exchanger. The slurry may be heated by plugging the system into standard AC power for a predetermined microwave heat charging duration. A closed, triple-expansion, reciprocating Rankine cycle engine capable of operating under computer control via a high pressure micro-atomized steam working medium is provided to propel the vehicle. A variety of working fluids are capable of powering the Rankine cycle engine.08-11-2011
20090241545RADIAL COUNTERFLOW STEAM STRIPPER - Turbine exhaust steam, axially fed between counter-rotating radial flow disk turbines, separates into: (1) a radially inward flow of low enthalpy dry steam, and (2) a radially outward flow of high enthalpy steam, noncondensibles, and condensate. The radially inward flow goes to a conventional condenser. The radially outward flow loses enthalpy turning the disk turbines as it passes in the boundary layers against the disks, thus becoming low enthalpy dry steam, and the counter-rotation of the disks by impinging mass flow of condensate, high enthalpy steam, and noncondensibles sustains a cascade of dynamic vortex tubes in the shear layer between the boundary layers. The low enthalpy dry steam resulting from work being done flows into the condenser through the vortex cores of fractal turbulence. Condensate exits the periphery of the workspace, ready to be pumped back into the Rankine cycle. More condensate is recovered from the low enthalpy vapor in the condenser. Heat rejection from the cooling water circuit is easier because a significant mass fraction does not enter the condenser. Dynamic evaporative cooling of cooling water, uses fractal turbulence between counter-rotating centrifugal impellers, fed at their common axis of rotation with cooling water. Chilled water flows radially outward to recirculation, and hot water and vapor flows radially inward to the impeller axis of rotation. Vapor is stripped through the vortex cores of fractal turbulence into a condenser where it condenses as distilled water. Ultimate heat rejection is into the environment without discharge of vapor.10-01-2009
20100313565WASTE HEAT RECOVERY SYSTEM - The present invention provides a waste heat recovery system, comprising: an internal combustion engine for supplying a high grade waste heat thermal resource fluid and a low grade waste heat thermal resource fluid; an intermediate thermal cycle by which an intermediate fluid is vaporized by means of the high grade waste heat thermal resource fluid and is expanded within a first turbine, whereby produce is produced; and an organic thermal cycle by which an organic motive fluid is preheated by means of the low grade waste heat thermal resource fluid and is vaporized by means of the discharge of the intermediate fluid from the first turbine, said vaporized organic motive fluid being expanded in a second turbine, whereby power is produced.12-16-2010
20100107637Waste heat engine - An engine includes a radial arrangement of cylinders each having a reciprocating piston with a piston head and a connecting rod pivotally linked to the piston head at an upper end. A lower end of each connecting rod is pivotally linked to a crank disk that is rotatably mounted on a crank arm of a crankshaft. Steam intake valves at each cylinder are momentarily opened by a bearing cam roller that is moved in a circular path by rotation of the crank disk to sequentially engage spring urged cam followers on inboard ends of radially extending valve stems. Low pressure steam or gas is injected into the top of each cylinder, as the intake valves of the cylinders are opened in sequence, thereby forcing the piston in each cylinder through a power stroke to move the crank disk and turn the crankshaft. Angular displacement of each connecting rod through the return stroke of the piston urges an exhaust reed valve on the piston head to an open position, thereby releasing exhaust steam to a condenser chamber. The engine is self-starting and operates in a low pressure, low temperature range, using waste heat from an external source, such as exhaust from an internal combustion engine, burning of refuse (e.g. garbage or other solid waste material) or solar heat.05-06-2010
20100095674VAPOR POWERED ENGINE/ELECTRIC GENERATOR - The present invention provides a vapor powered apparatus for generating electric power. Embodiments of the present invention include a storage tank containing a working fluid having a boiling point less than 160° F., a heating source that vaporizes at least a portion of the working fluid to provide a working pressure of the vaporized working fluid, and a pressure motor that converts the working pressure of the vaporized working fluid into mechanical motion. The vaporized working fluid exiting the pressure motor is captured, condensed and returned to the storage tank. Preferably, at least some of the components of the apparatus are hermetically sealed by an outer casing.04-22-2010
20120216541MULTISTAGE PRESSURE CONDENSER AND STEAM TURBINE PLANT EQUIPPED WITH THE SAME - A pressure bulkhead has a plurality of holes and divides a low-pressure chamber at low pressure in the vertical direction. A cooling-tube bank is located in an upper section of the low-pressure chamber and performs heat exchange with low-pressure steam guided to the low-pressure chamber by introducing coolant therein to condense the low-pressure steam to low-pressure steam condensate. A reheat chamber serves as a lower section of the low-pressure chamber and stores the low-pressure steam condensate falling from the holes in the pressure bulkhead. A high-pressure-steam introducing unit introduces high-pressure steam within a high-pressure chamber at high pressure to the reheat chamber. A plurality of plate members are parallel to each other below the pressure bulkhead and extend in a falling direction of the condensate falling from the holes in the pressure bulkhead.08-30-2012
20090013692METHOD AND APPARATUS FOR CONTROLLING A STEAM CYCLE - The invention relates to a steam cycle apparatus, comprising 01-15-2009
20100089061START-UP SYSTEM MIXING SPHERE - A start-up system mixing element including; a body defining a cavity, a first inlet port disposed in the body and configured to provide a first fluid to the cavity, a second inlet port disposed in the body and configured to provide a second fluid to the cavity, an outlet port disposed in the body and configured to remove the first and second fluids from the cavity and an internal distribution pipe disposed in the first inlet port, wherein the internal distribution pipe is configured to provide the first fluid to the cavity via a plurality of holes directed toward a center of the cavity.04-15-2010
20120266596STEAM TURBINE PLANT - A steam turbine plant of one embodiment includes a boiler to change water into steam, an upstream turbine including plural stages of rotor vanes and plural stages of stator vanes and to be driven by the steam from the boiler, a downstream turbine including plural stages of rotor vanes and plural stages of stator vanes and to be driven by the steam from the upstream turbine, a condenser to change the steam exhausted from the downstream turbine into water, a collector to collect water from, for example, the steam which exists upstream of an inlet of the final-stage rotor vane in the upstream turbine, and a collected matter path to cause collected matter in the collector to flow into, for example, the steam between an outlet of the final-stage rotor vane of the upstream turbine and an inlet of the final-stage rotor vane of the downstream turbine.10-25-2012
20120285171HEAT RECOVERY SYSTEM AND HEAT RECOVERY METHOD OF CO2 RECOVERY UNIT - A heat recovery system of a CO11-15-2012
20120186253Heat Recovery Steam Generator Boiler Tube Arrangement - A heat recovery steam generator includes a casing having an inlet and an outlet, a boiler tube disposed in the casing, the boiler tube defining an inner cavity and an outer surface, the boiler tube having a cross-sectional shape with a longitudinal axis and a transverse axis, wherein a length of the longitudinal axis is greater than a length of the transverse axis, and at least one fin arranged on the outer surface of the boiler tube.07-26-2012
20110283704Power Plant - A boiling water nuclear power plant supplies steam from a reactor to high-pressure and low-pressure turbines. Water (feed water) generated by condensing steam in a condenser is heated by low-pressure and high-pressure feed water heaters and supplied to the reactor. The steam discharged from the low-pressure turbine is compressed by a steam compression apparatus (a heat pump) and supplied to one of the low-pressure feed water heaters to heat feed water. The steam extracted from the low-pressure turbine is also supplied to the low-pressure feed water heater. When power required for the steam compression apparatus is Q11-24-2011
20110283703 HRSG FOR FLUIDIZED GASIFICATION - A HRSG for fluidized bed gasification comprises a high temperature evaporator (11-24-2011
20110289923RECOVERY OF MERCURY CONTROL REAGENTS BY TRIBO-ELECTRIC SEPARATION - A method and apparatus for recovering mercury control reagents from particulate materials is disclosed. The particulate materials include fly ash mixed with mercury control reagents collected from boiler flue gases. The particulate materials are provided to an electrostatic separation system, which is operated under predetermined conditions so as to produce a concentrated stream of the mercury control reagent and a diluted stream containing minimal mercury control reagent.12-01-2011
20110296838HEAT SOURCE MACHINE - A heat source machine includes: a first emission amount calculation unit 12-08-2011
20110167825PLANT FOR PRODUCING COLD, HEAT AND/OR WORK - A plant for the producing of cold, heat and/or work. The plant includes at least one modified Carnot machine having a first assembly that includes an evaporator Evap combined with a heat source, a condenser Cond combined with a heat sink, a device DPD for pressurizing or expanding a working fluid GT, a means for transferring said working fluid GT between the condenser Cond and DPD, and between the evaporator Evap and DPD; a second assembly that includes two transfer vessels CT and CT′ that contain a transfer liquid LT and the working fluid GT in the form of liquid and/or vapor; a means for selectively transferring the working fluid GT between the condenser Cond and each of the transfer vessels CT and CT′, as well as between the evaporator Evap and each of the transfer enclosures CT and CT′; and a means for selectively transferring the liquid LT between the transfer vessels CT and CT′ and the compression or expansion device DPD, said means including at eat hydraulic converter.07-14-2011
20090173073METHOD OF SEPARATING CO2 FROM A GAS FLOW, CO2 SEPARATING DEVICE FOR CARRYING OUT THE METHOD, SWIRL NOZZLE FOR A CO2 SEPARATING DEVICE - A method is provided for separating CO07-09-2009
20080307790Steam Engine - A steam engine has a pipe shaped fluid container, a heating and cooling devices respectively provided at a heating and cooling portions of the fluid container, and an output device connected to the fluid container, so that the output device is operated by the fluid pressure change in the fluid container, to generate an electric power. In such a steam engine, an inner radius “r12-18-2008
20120291436STEAM GENERATION SYSTEM - A steam generation system delivers heats water and carbon dioxide at high temperatures in the presence of one or more plasma arc torches and converts the materials into hydrogen and carbon monoxide. The converted gas is delivered to a heat recovery steam generator (“HRSG”) to produce steam, which may be used to power a steam turbine. Depending on the amount of steam and/or power desired, the system may use a control system to vary the flow, temperature and pressure of the gas delivered to the HRSG. The control system may do this by bringing additional torches on-line or off-line in the processing chamber, by adding unheated gas directly from a supply source, shunting the gas from the HRSG, and varying the flow of water delivered to the HRSG.11-22-2012
20080282701External combustion engine - An external combustion engine provided with a plurality of evaporators and stabilized in output and efficiency, that is, an engine provided with at least one main container, a plurality of evaporators heating the working medium to evaporate, condensers cooling the vapor of the working medium evaporated at the evaporators to make it condense, an output part communicated with the other end of the main container and converting displacement of a liquid part of the working medium occurring due to fluctuations in volume of the working medium accompanying evaporation and condensation of the working medium to mechanical energy for output, a single main container pressure adjusting means adjusting an internal pressure of the main container, and controlling means for controlling the main container pressure adjusting means based on a lowest temperature in the temperatures of the plurality of evaporators constituting a minimum evaporator temperature.11-20-2008
20100126173Rotary propane steam engine road vehicle - The Rotary Propane Steam Engine and Road Vehicle is an invention that substitutes a low carbon fuel, propane, to supply energy to a road vehicle, which can be used in place of the polluting gasoline engine.05-27-2010
20100139276Method of Efficiency and Emissions Performance Improvement for the Simple Steam Cycle - A method for improvement of a fossil fuel energy conversion into electrical energy for the simple sub- and supercritical steam cycle is proposed through introduction of additional regenerative cycle duties to improve the evaporation rate per unit of fuel burned, thus minimizing condenser heat loss of the working media. The additional duties provide a supplemental energy credit in the form of heat input to a steam generator where a modified combustion process is realized to convert fossil fuel into carbon monoxide and hydrogen at atmospheric pressure and thus achieving an essential reduction of nitrogen oxides (NOx) formation. The additional duties also involve a direct contact heat transfer to recover latent and thermal energy, contained in the discharged combustion products to provide yet another energy credit that satisfies both conventional and/or added regenerative cycle duties. A water surplus is also achieved in the said process of heat recovery from the combustion products to significantly improve water usage of the simple steam plant. The proposed heat recovery process also minimizes coolant usage while achieving a complete water recovery from combustion products and maintaining draft capabilities in the stack.06-10-2010
20090188254Kinetic steam condenser - Method and system for condensing steam at any temperature, the steam being in contact with a large water surface, whereby the relative temperatures of the steam and water are regulated so that the steam is kept at under-saturation pressure and the water temperature is kept at up to 100° C.07-30-2009
20100139275ELECTROGENERATING DEVICE WITH A HIGH-TEMPERATURE STEAM TURBINE - An electrogenerating device comprises a steam boiler, a hydrogen plant for steam conversion of natural gas into hydrogen, an oxygen plant for production of oxygen from air, a high-temperature H06-10-2010
20090025390Low CO2 Thermal Powerplant - A method for generation of electrical power mainly from a coal based fuel, where the combustion gas is separated into a CO01-29-2009
20090199558EXHAUST STACKS AND POWER GENERATION SYSTEMS FOR INCREASING GAS TURBINE POWER OUTPUT - An exhaust stack having a junction tube and a flue is provided. The flue has a silencer portion, a converging duct portion, a tubular portion, and a diverging diffuser portion. The silencer portion fluidly communicates with the junction tube. The silencer portion has a first hydraulic mean cross-sectional flow path, and the tubular portion has a second hydraulic mean cross-sectional flow path less than or equal to the first hydraulic mean cross-sectional flow path. The converging duct portion is coupled between the silencer portion and the tubular portion. The diverging diffuser portion is coupled to an end of the tubular portion opposite to the converging duct portion, such that exhaust gases flowing through the junction tube, the silencer portion, the converging duct portion, the tubular portion and the diverging diffuser portion have a reduced overall pressure drop, at least in part due to the diverging diffuser portion and the second hydraulic mean cross-sectional flow path being less than or equal to the first hydraulic mean cross-sectional flow path.08-13-2009
20120067048Multipurpose Thermal Power Plant System - To provide a multipurpose thermal power plant system capable of capturing moisture and carbon dioxide in large quantities at a low cost from exhaust gas of an oxygen combustion boiler.03-22-2012
20110219771ENERGY TRANSFER SYSTEM COMPRISING A PHASE CHANGE MATERIAL - An energy transfer system for absorbing, temporarily storing and releasing energy is disclosed. The described energy transfer system comprises (a) a first container containing a Phase Change Material, (b) a heat generation element, which is connectable to an external energy source and which is capable of charging the Phase Change Material with thermal energy, wherein energy provided by the external energy source is used, and a heat extraction element, which is connectable to an external heat engine and which is capable of extracting thermal energy from the Phase Change Material, wherein the external heat engine is capable of converting the extracted thermal energy into electric energy. It is further described an energy transfer arrangement comprising two of such energy transfer systems, and a method for absorbing, temporarily storing and releasing energy.09-15-2011
20080264062Isothermal power - This invention provides means for producing power by using isothermal compressors and isothermal expanders. One embodiment has an isothermal compressor that compresses air (or other gas), passes the air through a counter-flow heat exchanger, which heats the air, uses the heated air to drive an isothermal expander for power generation, and transfers the expander exhaust back through the counter-flow heat exchanger to heat the input air to the expander. Another embodiment has a boiler that produces vapor that flows through a counter-flow heat exchanger to superheat the vapor. The vapor then flows through an isothermal expander for power generation. The exhaust from the isothermal expander flows back through the counter-flow heat exchanger to supply heat to the vapor coming from the boiler and then flows through another heat exchanger that preheats the feed liquid flowing to the boiler.10-30-2008
20080264061METHOD AND APPARATUS TO FACILITATE FLUID COMPRESSION - A method of assembling a fluid compression system includes coupling at least one first compression apparatus to a first platform. The method also includes coupling at least one drive apparatus to one of the first platform and a second platform. The method further includes coupling the first platform to the second platform. The at least one second compression apparatus is coupled in series flow communication with the at least one first compression apparatus.10-30-2008
20090211254DRIVE TRAIN OF A MOTOR VEHICLE WITH A COMPRESSED-AIR SYSTEM - A drive train for a motor vehicle includes: a vehicle drive engine for driving the motor vehicle via a vehicle drive shaft driven by a vehicle drive engine; and a compressor which can be driven optionally or permanently for compressing air for a compressed-air system of the motor vehicle. The compressor is associated with at least one drive unit in the form of a steam-driven expansion machine by which the compressor can be driven.08-27-2009
20090241546Increasing power of steam plant with refrigerant cooled condenser at peak loads by using cooling thermal storage - A steam powered power plant and method of cooling a steam powered plant. A boiler provides steam to turbine and the turbine drives a generator to produce power. Exhaust steam from the turbine is cooled in a condenser and returns to the boiler. A first dry refrigeration cycle uses a first compressor to compress a first flow of refrigerant and the compressed flow of refrigerant rejects heat to the surrounding through an air cooled condenser and is then expanded in the steam condenser to cool the exhaust steam. A second refrigeration cycle includes a second compressor used to compress a second flow of refrigerant and the second flow of refrigerant is cooled in an air cooled condenser and is expanded to cool water in a storage tank wherein the stored water can be used to cool the condenser and exhaust steam during a peak load condition of the power plant.10-01-2009
20100162704SYSTEMS, APPARATUSES, AND METHODS OF HARNESSING THERMAL ENERGY OF GAS TURBINE ENGINES - One embodiment according to the present invention is a unique system for harnessing thermal energy of a gas turbine engine. Other embodiments include unique apparatuses, systems, devices, and methods relating to gas turbine engines. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present invention shall become apparent from the following description and drawings.07-01-2010
20130213042LOW PRESSURE TURBINE WITH TWO INDEPENDENT CONDENSING SYSTEMS - A low-pressure turbine and a steam power plant with a low-pressure turbine (08-22-2013
20100162703PROCESS FOR REDUCING CARBON DIOXIDE EMISSION IN A POWER PLANT - A process for reducing CO07-01-2010
20100223926Dust Coal Boiler, Dust Coal Combustion Method, Dust Coal Fuel Thermal Power Generation System, and Waste Gas Purification System for Dust Coal Boiler - A pulverized coal thermal power generation system that significantly reduces the amount of NOx emissions from a boiler and does not require a denitration unit is provided. When a denitration unit is not used, performance to remove mercury from a boiler waste gas is reduced. A waste gas purification system for a pulverized coal boiler, that compensates for this is provided.09-09-2010
20090077971Method and deivce for the production of superheated steam - The invention relates to a method and an apparatus for the generation of superheated steam. According to the invention, essentially saturated or wet steam is generated in a main vessel in which superheating is technically not possible or only restrictedly possible and which is superheated in an auxiliary plant whereby the superheater of the auxiliary plant is controlled dependent upon the steam production of the main plant.03-26-2009
20100251714AIR-WATER POWER GENERATION SYSTEM - The Air-Water Power Generation System utilizes the temperature differential between warm air and a surface cooled by water evaporation. To enhance the temperature differential, the air that evaporates the water is first cooled by releasing heat to boil the working fluid in a boiler and then is cooled further by a counter-flow heat exchanger before the air enters the condenser where a water film is evaporating. The air then becomes colder as the water evaporates in the condenser, and this provides the cooling to condense the working fluid. Finally, the cold air flows out of the condenser and flows back through the counter-flow heat exchanger to provide the cooling of the air flowing from the boiler.10-07-2010
20100251713Steam turbine power plant - An intermediate-pressure turbine is divided into a high-temperature, high-pressure side high-temperature, intermediate-pressure turbine section 10-07-2010
20090260361ISOTHERMAL POWER SYSTEM - This invention provides means for producing power by using isothermal compressors and isothermal expanders. One embodiment has an isothermal compressor that compresses air (or other gas), passes the air through a counter-flow heat exchanger, which heats the air, uses the heated air to drive an isothermal expander for power generation, and passes the expander exhaust back through the counter-flow heat exchanger to heat the input air to the expander. Another embodiment has a boiler that produces vapor that flows through a counter-flow heat exchanger to superheat the vapor. The vapor then flows through an isothermal expander for power generation. The exhaust from the isothermal expander flows back through the counter-flow heat exchanger to supply heat to super heat the vapor coming from the boiler. The description presents several devices that can perform at near isothermal conditions, including a modified Tesla turbine.10-22-2009
20110056203Method for recuperating energy from an exhaust gas flow and motor vehicle - In a motor vehicle with an internal combustion engine providing a hot exhaust gas flow which is used as heat source for a Clausius-Rankine cycle process, wherein a pump is provided in the cycle for pumping, pressurizing and circulating an operating fluid, the pumping operation is controlled by a controller depending on the exhaust gas mass flow through an evaporator and possibly also the exhaust gas temperature to vaporize the operating fluid and expanding the vapor under pressure in an expander while generating energy. The vapor is condensed in a condenser to form a condensate which is again returned to the pump.03-10-2011
20110056202Method for recovering heat losses of an internal combustion engine - In a method for recovering energy from the heat dissipated by an internal combustion engine wherein the pressure and temperature of a liquid working medium are increased from a lower process pressure and a first temperature to an upper process pressure and a second temperature by a pump unit; the working medium is heated from the second temperature to a third temperature by transferring heat from a hot medium containing heat dissipated by the internal combustion engine to the working medium, which is thereby converted from a liquid phase to a gaseous phase; the working medium is then expanded to the lower process pressure whereby mechanical power is generated and the working medium is converted from a gaseous phase to a liquid phase and transferred back to the pump unit, the upper process pressure is adjusted in such a way that the working medium is expanded at least approximately to a predetermined saturated steam limit and to an internal combustion engine for carrying out the method.03-10-2011
20100293949APPARATUS FOR RECOVERING ENERGY FROM WATER - Apparatus for recovering energy from water is disclosed. Water is heated by application of electrical energy to heaters and contacting the water with the heaters in a manner and under pressure and temperature conditions such that it is instantaneously converted to gas. Energy in excess of that supplied to the heaters results from the rapid conversion of water to gas.11-25-2010
20110107762STEAM-JET ENGINE - A steam engine in which a liquid and a steam are jetted so that a rotor is turned by the reaction thereof, and the rotor having a well-balanced simple structure. In the steam engine, the rotor 05-12-2011
20110083436SYSTEMS, APPARATUS AND METHODS FOR THERMAL ENERGY STORAGE, COUPLING AND TRANSFER - Systems, methods, and apparatus relating to the use of phase change material to store, transfer and convert heat, such as from solar radiation, to mechanical work or electricity. Apparatus, systems, components, and methods relating to thermal energy transfer and energy conversion are described herein. In one aspect, the invention relates to a containment vessel having a heat receiving region and a heat transfer region such that a plurality of phase change materials are disposed therein and a sequence of solid, liquid and vapor phases are used to transfer heat from a source to a heat receiver of a power conversion unit.04-14-2011
20110239650POWER PLANT COMPRISING A TURBINE UNIT AND A GENERATOR - A power plant including a turbine unit having a turbine, a generator connected to the turbine for power transmission, and a cooling device for cooling the generator is provided. The cooling device is provided to release waste heat from the generator to a device of the power plant. Waste heat may be used in the power plant process, thus attaining increased efficiency.10-06-2011
20090031727External combustion engine - An external combustion engine includes: a main container sealed with a working fluid in a liquid state adapted to flow; a heater for heating a portion of the working fluid in the main container and generating the vapor of the working fluid; a cooler for cooling and liquefying the vapor; an output unit for outputting by converting the displacement of the liquid portion of the working fluid generated by the volume change of the working fluid due to the generation and liquefaction of the vapor into mechanical energy; and an auxiliary container communicating with the main container. The heater, the cooler and the output unit are arranged in order, in the direction of displacement of the working fluid. The working fluid is sealed in the auxiliary container which communicates with the portion of the main container nearer the output unit than the cooler. The engine further includes a communication area adjusting unit for establishing communication between the main container and the auxiliary container with a first communication area in normal operation mode and with a second communication area larger than the first communication area at the time of engine start. Thus, a predetermined output is produced quickly after engine start.02-05-2009
20110146280SYSTEM AND METHOD FOR HEATING FEEDWATER USING A SOLAR HEATING SYSTEM - An embodiment of the present invention may take the form of a system and method that may use at least at least one solar heating system to heat the feedwater consumed by a boiler. An embodiment of the present invention may incorporate concentrated solar power (CSP). Generally, CSP systems incorporate a plurality of lenses, mirrors, or combinations thereof and a tracking system to focus a large area of sunlight forming a small concentrated beam of light. The concentrated light may then be used as a heat source. In an embodiment of the present invention, the heat source may be used to partially or completely heat the feedwater consumed by a boiler. CSP systems may take the form of a solar trough system, a parabolic dish system, a solar power tower system, or the like.06-23-2011
20090301090WORKING MEDIUM FOR HEAT CYCLE - To provide a working medium for heat cycle less influential to environment and excellent in heat cycle characteristics, and a Rankine cycle system, a heat pump cycle system and a refrigerating cycle system having high capacity and efficiency.12-10-2009
20090217667External combustion engine - An external combustion engine suppressing boiling of cooling water in a cooler. A heater 09-03-2009
20090217666Rankine engine with efficient heat exchange system - The Rankine engine with efficient heat exchange system provides a rapidly rechargeable thermal energy storage bank operably connected to a heat engine capable of propelling a vehicle. Microwave energy is supplied to the system via a network of waveguides. Thermal storage bank has a slurry in a heat exchanger capable of sustaining operation of the engine without requiring the microwave source. The slurry provides a mixture of powdered stainless steel and silicone oils functioning as the working fluid in the hot side of the heat exchanger. The slurry may be heated by plugging the system into standard AC power for a predetermined microwave heat charging duration. A closed, triple-expansion, reciprocating Rankine cycle engine capable of operating under computer control via a high pressure micro-atomized steam working medium is provided to propel the vehicle. A variety of working fluids are capable of powering the Rankine cycle engine.09-03-2009
20100064688Hybrid brayton cycle with solid fuel firing - This invention provides a method of converting heat energy to a more usable form using an externally-heated Brayton cycle. Atmospheric air is used with water injection in a thermodynamic cycle that includes compression (03-18-2010
20110247334Distributed power generation system for surface transport - A distributed power generation system (10-13-2011
20110048013POWER PLANT - A power plant (03-03-2011
20090211253Organic Rankine Cycle Mechanically and Thermally Coupled to an Engine Driving a Common Load - The shaft (08-27-2009
20110041506ADIABATIC EXPANSION HEAT ENGINE AND METHOD OF OPERATING - In an adiabatic expansion heat engine, adiabatically expanded low pressure fluid is returned to a source of high pressure fluid through a balance of internal pressures or forces that balances out the resistance to the flow of the fluid being pumped from the low pressure to the high pressure with the high pressure fluid metered into the working chamber.02-24-2011
20080209908APPARATUS AND METHOD FOR LIQUEFIED NATURAL GAS CARRIER PROPULSION - Disclosed herein is an apparatus and method for liquefied natural gas (LNG) carrier propulsion. In the apparatus and method, the propulsion of an LNG carrier is done by only a single main diesel engine and has construction to promptly cope with emergencies caused by malfunction of the main diesel engine. The propulsion apparatus for an LNG carrier comprising a boil-off gas re-liquefaction apparatus for re-liquefying boil-off gas generated in LNG storage tanks to return re-liquefied boil-off gas back to the LNG storage tank comprises a single main diesel engine, a propulsion shaft separably connected to the main diesel engine, and an electric motor for propulsion separably connected to the propulsion shaft and supplied with power intended for operation of the boil-off gas re-liquefaction apparatus.09-04-2008
20110005227EXHAUST GAS HEAT RECOVERY UNIT AND EXHAUST GAS HEAT RECOVERY METHOD - An exhaust gas heat recovery unit includes a plurality of heat pipes (01-13-2011
20110162368Combined Cycle System Employing Phase Change Material - In one embodiment, a component for a power generation system includes an interior volume for containing steam condensate or gas turbine exhaust gas. A phase change material is disposed around an external surface of the combined cycle power generation system component.07-07-2011
20110209480ROTARY COMPRESSOR-EXPANDER SYSTEMS AND ASSOCIATED METHODS OF USE AND MANUFACTURE - The present technology is directed generally to rotary displacement systems and associated methods of use and manufacture. The systems can be used to compress and/or expand compressible fluids. In some embodiments, the rotary displacement systems include a chamber housing having a pressure-modifying chamber with a first port and a second port, a first passageway in fluid communication with the chamber via the first port, and a second passageway in fluid communication with the chamber via the second port. The systems can further include a shaft positioned within the chamber housing and rotatable relative to the chamber housing about a rotational axis, and a rotor comprising no more than two lobes. The rotor can be carried by and rotatable relative to the shaft, and can be alternately operable in a first mode in which flow is provided from the first passageway to the second passageway via the chamber and in a second mode in which flow is provided from the second passageway to the first passageway via the chamber.09-01-2011
20100319348WASTE HEAT RECOVERY SYSTEM - A waste heat recovery system in which hot waste fluids, such as flue gasses, pass through a fluid heat exchanger configured to transfer energy in the form of heat to a heat transfer liquid, preferably molten salt. The energy in the molten salt is used to generate useable power such as electrical energy. The waste gas heat recovery system is especially adapted for use with batch processes, such as steelmaking and copper converting, and allows continuous or substantially continuous power production.12-23-2010
20100154420Rotary displacement steam engine - A steam engine of a simple constitution capable of efficiently obtaining mechanical energy not only from a heat source of a high temperature but also from various heat sources in a low-temperature state such as the exhaust heat of an internal combustion engine. The engine comprises a displacement engine 06-24-2010
20100192574Power compounder - A power compounder system and method is disclosed, wherein the system includes a prime mover producing waste heat and a power compounder coupled to the prime mover. The power compounder includes a. working fluid configured to receive thermal energy from the waste heat, a working fluid collector to hold the working fluid, an evaporator fluidly coupled to the working fluid collector for transferring the waste heat to the working fluid to change the working fluid to a vapor working fluid, a feed pump to cause the working fluid to flow between the working fluid collector and the evaporator, a double screw expander fluidly coupled to the evaporator to receive the vapor working fluid to create rotational mechanical energy, where the double screw expander is associated with the prime mover via at least one of a mechanical clutch, an electrical clutch and a sprag clutch.08-05-2010
20100257861Hybrid electric steam turbine automotive engine - The Hybrid Electric Steam Turbine Automotive Engine is a new and useful type of engine which does not require the internal combustion of Petroleum-Based fuels. The stainless steel casting engine operates on either petroleum-based or non-petroleum-based fuels and will eliminate dependence upon petroleum-based fuel. It will reduce adverse environmental impacts caused by emissions of Green House Gases.10-14-2010
20100018207Controlled Organic Rankine Cycle System for Recovery and Conversion of Thermal Energy - A system for controlled recovery of thermal energy and conversion to mechanical energy. The system collects thermal energy from a reciprocating engine, specifically from engine jacket fluid and/or engine exhaust and uses this thermal energy to generate a secondary power source by evaporating an organic propellant and using the gaseous propellant to drive an expander in production of mechanical energy. A monitoring module senses ambient and system conditions such as temperature, pressure, and flow of organic propellant at one or more locations; and a control module regulates system parameters based on monitored information to optimize secondary power output. A tertiary, or back-up power source may also be present. The system may be used to meet on-site power demands using primary, secondary, and tertiary power01-28-2010
20110131996Latent Heat Recovery Generator System - A heat recovery generator system (06-09-2011
20090199559External combustion engine - An external combustion engine alternately repeating a first stroke of making a working fluid evaporate at a plurality of heating portions and making a liquid phase part of the working fluid displace toward an output part side and a second stroke of making the working fluid evaporated at the first stroke condense at the plurality of cooling portions and making the liquid phase part of the working fluid displace toward the side of the plurality of the heating portions and provided with inflow adjusting means for reducing differences in inflows among the plurality of the heating portions, wherein the inflow is defined as the amount of a liquid phase part of the working fluid flowing into the heating portions when the liquid phase part of the working fluid displaces from the output part side to the side of the plurality of the heating portions in the second stroke.08-13-2009
20120042654TIP FLOWPATH CONTOUR - An apparatus is provided and includes a turbine including a casing and a turbine bucket having a tip proximate to the casing and a trailing edge defined relative to a direction of fluid flow through the turbine and a diffuser, defined between a central surface and a downstream section of the casing, which is fluidly coupled to the turbine and disposed downstream from the trailing edge, a slope of the downstream section of the casing being angled by at least 6 degrees relative to a slope of the tip within about 0.5 turbine bucket chord lengths as measured at the tip from the trailing edge, and the central surface and the downstream section of the casing being at least substantially parallel or divergent from the trailing edge.02-23-2012
20120006025THERMAL POWER PLANT USING LOW-GRADE COAL AS FUEL - A thermal power plant that uses low-grade coal as fuel and allows for increased thermal efficiency of the entire plant is provided. The thermal power plant includes a drying device (01-12-2012
20080271454Steam powered engine - A steam powered engine system wherein hot exhaust gas produced by a small secondary engine is used to heat water to a temperature above 212 degrees F., the superheated water being injected into a cylinder containing hot compressed gas. The water then flash expands into steam to drive a piston. The hot exhaust gas from the secondary engine is further utilized to scavenge spent gas and liquid from the cylinder during the return stroke of the piston, as well as to maintain a suitably high temperature within the cylinder.11-06-2008
20120151926Feedwater Heater Control System for Improved Rankine Cycle Power Plant Efficiency - A steam cycle system comprises a boiler comprising a superheat section, a reheat section, and an economizer section, wherein the boiler is configured to receive a feedwater stream; a steam turbine system comprising a high pressure turbine and a lower pressure turbine, wherein the steam turbine system is configured to receive steam generated by the boiler; a condenser configured to receive at least a portion of the outlet steam from the steam turbine system and output the feedwater stream; a high pressure feedwater heat exchanger configured to receive at least a portion of the feedwater stream, allow for an energy exchange between the portion of the feedwater stream and a steam stream, and output the portion of the feedwater stream to the boiler; a steam extraction line configured to provide a steam flow from an outlet of the high pressure turbine to the high pressure feedwater heater; a feedwater temperature control device configured to control the temperature of the feedwater stream by modulating the energy transfer in the high pressure feedwater heat exchanger between the steam flow provided through the steam extraction line and the portion of the feedwater received by the high pressure feedwater heat exchanger.06-21-2012
20120060502Clausius-Rankine cycle - In a Clausius-Rankine cycle, in particular for mobile applications, comprising a pump for circulating a liquid working fluid in the Clausius-Rankine cycle and pressurizing the working fluid, a heating device for vaporizing the pressurized liquid working fluid and an expansion device for generating mechanical driving power by expanding the hot, compressed vaporized working fluid, a condenser device for condensing the hot, expanded vaporized working fluid is provided to form again liquid working fluid and the condenser device includes integrated therein a collection volume for collecting and storing liquid working fluid.03-15-2012
20120102955Thermal Power Plant - A thermal power plant is proposed for achieving high reliability, low material cost, and low construction cost by devising the arrangement and structures of a boiler, steam turbines, and a flue gas treatment apparatus to reduce a usage amount of high-temperature resistance material and further to reduce a thermal elongation of piping. In a thermal power plant including a 2 pass-type boiler having a furnace for burning fuel, a rear heat recovery area for recovering heat from combustion gas exhausted from the furnace, steam turbines are arranged near the rear heat recovery area.05-03-2012
20100154421RANKINE SYSTEM WITH GRAVITY-DRIVEN PUMP - A gravity-driven pumping unit has an inlet valve connected to a condenser, an outlet valve connected to a boiler, and a staging zone between the inlet and outlet valves. The inlet valve, the outlet valve, the liquid line and entire path established between the condenser and boiler are oriented, sized and shaped to allow for the vapor refrigerant to freely move upward from the boiler to the condenser and to allow for the liquid refrigerant to freely drain downwards from the condenser to the boiler by gravity. A control system opens and closes the inlet and outlet valves in a proper sequence, which enables gravity-driven movement of liquid refrigerant from the condenser to the staging zone and then from the staging zone to the boiler, against a positive pressure differential between the boiler and condenser.06-24-2010
20120159951Vehicle Propulsion System - A vehicle propulsion system has a sealed, closed loop steam generating system connected to supply steam to drive a small turbine that drives an alternator or generator to produce electrical energy that is supplied to electric traction motors at the wheels of the vehicle to propel the vehicle. According to some of the embodiments, a cooling coil is associated with the steam generating system to facilitate complete and rapid condensing of the steam back to water. At least one battery is connected in the system to supply electrical energy during start up and as otherwise needed. A controller such as a CPU or PC Main Board is connected with the propulsion system to regulate and control distribution of electrical energy to components of the system.06-28-2012
20100205968Method for operating a combustion system and combustion system - A combustion system with a burner and a membrane unit including a retentate side and permeate side for separating oxygen from air is provided. The permeate side of the membrane unit is connected to the burner via a line. A heat exchanger is connected in a combustion gas flow such that a hot combustion gas arising from fossil combustion is applied to the primary side of the heat exchanger and air applied to the secondary side of the heat exchanger is heated to a temperature required for operating the membrane unit and fed to the membrane unit. Further, a method for operating the combustion system is provided.08-19-2010
20120247104SYSTEM AND METHOD FOR CONTROLLING WASTE HEAT FOR CO2 CAPTURE - The present invention relates to systems and methods for providing steam to a gas recovery unit 10-04-2012
20120210715Turbine Nozzle Blade and Steam Turbine Equipment Using Same - Disclosed is a highly efficient turbine nozzle blade that reduces the number of blades in an axial-flow turbine while reducing secondary-flow loss. In the nozzle blade, when a differential pressure between a pressure side and a suction side of each blade, at the same axial chord position of the blade, is defined as a load of the blade, and a ratio between axial chord length “Cx” of the blade and an axial distance “xp” from a leading edge of the blade at a maximum load position that maximizes the blade load is defined as a maximum load relative position, Cx is greater at a hub and tip than at an intermediate vertical portion, and simultaneously a maximum load relative position at the hub and tip is set to be nearer to a trailing edge thereof than a maximum load relative position of the intermediate vertical portion of the blade.08-23-2012
20110203279COGENERATION DEVICE - Device for improving the production of heat by cogeneration comprising a hot source producing steam which is expanded in a turbine the exhaust of which is connected to an air condenser (08-25-2011
20100050638LOW-PRESSURE-VAPOR-RECOVERY TURBINE GENERATOR - A low-pressure-vapor-recovery turbine generator that effectively recovers low-pressure steam emitted from a high-pressure-side steam turbine to generate electric power is provided. A low-pressure-vapor-recovery turbine that recovers low-pressure steam emitted from a high-pressure-side steam turbine and is rotationally driven, a generator that generates electric power with a rotational output of the low-pressure-vapor-recovery turbine, and a condenser that condenses into liquid exhaust steam from the low-pressure-vapor-recovery turbine are provided. The low-pressure-vapor-recovery turbine, generator, and condenser are installed in a portable outer casing that can be transported.03-04-2010
20120073297Apparatus And Method Of Converting A Portion Of The Specific Energy Of A Fluid In Gas Phase Into Mechanical Work - An apparatus (03-29-2012
20120073296ROTARY CAM RADIAL STEAM ENGINE - The present invention is directed to a Rotary Cam Radial Steam Engine of a single or multiple pistons and cylinders, which are driven lineally by the introduction of pressure from an external source, through a single, centralized rotating valve. The valve has been designed to provide timed introduction of the pressurized gasses into each cylinder at the moment determined to be best for the engine's applied use, and then the same central rotating valve assembly at the appropriate moment opens to allow the used pressure to exhaust it into the atmosphere, or a collection system. The lineal direction of the pistons is then directed outward and onto an external rotating cam which converts the lineal energy into circular rotating energy. The engine can be disassembled for servicing or complete rebuilding and reassembled quickly with use of no tools. With the need for efficient energy generation, there is a growing requirement for a lighter weight, long lasting, economical motors with affordable ease of maintenance to be used on different applications capable using a variety of different power generating sources.03-29-2012
20120255304Apparatus and Method for Generating Power and Refrigeration from Low-Grade Heat - An apparatus and a method generate power and refrigeration from low-grade heat. The apparatus includes a heating module, a power generator module, an ejector, a heat exchanger, a condenser module, a low-temperature evaporator, a reservoir, a pressure pump and two direction controllable three-way valves. The heating module includes a heat source and a boiler. The power generator module includes an expansion turbine and a power generator. The condenser module includes a condenser and a cooling tower. The method is that the direction controllable three-way valves are operated to change the flow directions of the working fluid for executing a power generation and refrigeration mode, a power generation mode, a refrigeration mode or an idle mode.10-11-2012
20110120131PHASE CHANGE MATERIAL ENERGY SYSTEM - The present invention relates to an energy system (05-26-2011
20120297774EXHAUST HEAT RECOVERY SYSTEM, ENERGY SUPPLY SYSTEM, AND EXHAUST HEAT RECOVERY METHOD - The object of the present invention is to enhance available energy recovery efficiency compared to an exhaust heat recovery method by generation of water vapor. In order to achieve this object, the present invention adopts a configuration including a thermal conduction path (11-29-2012
20100083661APPARATUS FOR STEAM ATTEMPERATION USING FUEL GAS HEATER WATER DISCHARGE TO REDUCE FEEDWATER PUMP SIZE - Attemperation systems and methods for cooling steam bypassed from a steam turbine during tripping of the steam turbine are provided in the disclosed embodiments. The systems may be configured to deliver water discharged from a fuel gas heater to a bypass attemperator, where the water discharged from the fuel gas heater may be used to cool the bypass steam. Before being used by the fuel gas heater, the water used to heat the fuel gas may be heated by an economizer. The water may be delivered to the economizer by an intermediate pressure stage of a boiler feedwater pump. In the disclosed embodiments, the intermediate pressure stage of the boiler feedwater pump may also be used to supply water to a re-heater attemperator, which may be used to further cool the steam after it has been delivered from the bypass attemperator to a re-heater. In addition, the intermediate pressure stage of the boiler feedwater pump may deliver water directly to the bypass attemperator as a supplemental water source.04-08-2010
20110265478THERMOCHEMICAL THERMODYNAMICS CONTINUOUS CYCLE MACHINE - It is a thermodynamics machine carrying heat from T1 cold heat source to T2 hot heat source without using any energy operating contrary 0. law of thermodynamics or it is thermodynamics machine operating by using atmosphere heat using single heat source contrary 2. law of thermodynamics. Continuous cycle is combinated chemical reaction system in which A+B<->AB format homogeneous chemical reaction is controlled with having partner B component B+C→BC format mono direction chemical reaction. United chemical reaction system are continuous cycle, because heat of homogeneous reaction is bigger than direction reaction heat and this heat is used for the decomposition of mono direction reaction or never used heat for decomposition of mono direction reaction.11-03-2011
20110265479SYSTEM FOR STEAM PRODUCTION FOR ELECTRIC POWER GENERATION - A system for steam production for electric power generation may include an electrode boiler. The electrode boiler is configured to provide overheated steam. A steam turbine is coupled to the electrode boiler and is driven by the overheated steam. An electrical generator is coupled to the steam turbine to convert the kinetic energy of the steam turbine to electrical power.11-03-2011
20120324892Power System Driven By A Low-Temperature Heat Source - A power system driven by a low-temperature heat source includes a power cycling unit and a heat pump unit. The power cycling unit includes a turbine, a condenser, a pump, a first heat exchanger, and a second heat exchanger. The turbine, the condenser, the pump, the first heat exchanger, and the second heat exchanger are connected in sequence. The heat pump unit includes a condenser and an evaporator. The condenser of the heat pump unit is connected to the second heat exchanger. The evaporator is connected to the condenser of the heat pump unit. The evaporator absorbs heat of a working fluid in a waste heat pipe.12-27-2012
20120285170RANKINE CYCLE APPARATUS - The present invention provides a Rankine cycle apparatus that is mounted in a vehicle and includes a Rankine cycle circuit and a refrigeration cycle circuit. The Rankine cycle circuit and the refrigeration cycle circuit each include a condenser for cooling a corresponding type of working fluid and a receiver, which is connected to the condenser. The two condensers are arranged side by side in the upward-downward direction and each have a first end and a second end in the vehicle width direction. A first receiver, which is one of the receivers, is arranged outward of the first end in the vehicle width direction. A second receiver, which is the other one of the receivers, is located outward of the second end in the vehicle width direction.11-15-2012
20130019601METHOD AND APPARATUS FOR AN EXTERNAL COMBUSTION ENGINE HAVING A STEAM GENERATOR - Methods and apparatus for a power and/or propulsion system comprising an external combustor, a steam generator, and a radial piston engine. In one embodiment, an undersea vehicle is powered by a propulsion system including a steam generator having a series of coiled tubes in which water is heated to generate steam by combustion of a monopropellant fuel ignited in the external combustor.01-24-2013
20130019600TURBINE EXHAUST ARRANGEMENT - An exhaust arrangement for a turbine is provided having an inner turbine casing, a condenser, an exhaust arrangement structure, and a bearing cone. The inner turbine casing includes a plurality of last stage buckets. A steam flow passes through the inner turbine casing and out of the plurality of last stage buckets. The condenser for receives the steam flow. The exhaust arrangement structure has a diffuser, a lower section and an upper section. The lower section has an exhaust section. The lower section receives the steam flow from the last stage buckets of the inner turbine casing through the diffuser and guides the steam flow out of the exhaust section in a direction generally towards the condenser. The upper section has a receiving section and a guiding section.01-24-2013
20120240580STEAM VALVE DEVICE AND STEAM TURBINE PLANT - In the embodiment, a steam valve device has, a steam regulating valve, and an intermediate flow path connecting the main steam stop valve and the steam regulating valve. The main steam stop valve and the steam regulating valve respectively have: casings where flow paths are formed between horizontal inlet ports and outlet ports opened downward and valve seats are arranged in the flow paths; valve elements movable up and down in the casings; and valve rods for driving the valve elements. The valve rods extend upward, and they are pulled off upward in a direction to outside of the casings when opening the flow paths. The intermediate flow path changes the flow direction of main steam flowing out of the outlet port of the main steam stop valve from downward direction to horizontal direction to guide the main steam toward the outlet ports of the steam regulating valves.09-27-2012
20080250790HIGH-TEMPERATURE STEAM TURBINE POWER PLANT - A high-temperature steam turbine plant is of the top turbine type and structured as follows. It comprises a boiler building including a vertical boiler on the top of which a VHT turbine is installed; and a turbine building installed on the ground as a base. The VHT turbine and a generator connected with it are installed on the top of the boiler. The material for the portion of the steam pipe between the boiler building and the turbine building which is exposed to highest steam pressure is austenite steel which contains 50 weight % or more of ferrite steel or Fe. The inlet temperature of the VHT turbine is 675° C. or more and its outlet temperature is 550° C. or more and 650° C. or less.10-16-2008
20080245071THERMAL POWER PLANT - By improving a turbine efficiency, a power generation efficiency can be easily improved. The thermal power plant of the present invention comprises, for example: a boiler 10-09-2008
20080229747External combustion engine - An external combustion engine including a container 09-25-2008
20110232286Boiler Apparatus - A boiler apparatus is provided that generates a heat source capable of efficiently regenerating absorbing liquid while maintaining steam turbine efficiency to a maximum extent.09-29-2011
20080216480Internal combustion engine with auxiliary steam power recovered from waste heat - A combination internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber and a steam chamber in the cylinder adjacent the piston and at least one steam exhaust port positioned to communicate with the steam chamber through the wall of the cylinder for exhausting steam at a location in the cylinder wall adjacent to an engine cylinder cap surface that is heated externally to assist in reducing chilling or condensation of steam entering the steam chamber from a boiler fired by waste combustion heat. The invention also permits steam admitted from a steam chest jacketing the cylinder cap to be exhausted from the engine when the steam chamber is in an expanded state whereupon residual steam is then recompressed prior to admitting the next charge of steam with the stream in the steam chamber being heated directly by the combustion chamber as well as by heat from the steam chest. An I.C. exhaust powered heater is a part of an I.C. exhaust manifold which functions as an afterburner with supplemental air injection for promoting combustion of unburned exhaust constituents to superheat steam that is piped through it to the steam chest. The invention provides valves for balancing steam engine displacement with boiler output and for cylinder compounding with a boiler, heat exchange and control arrangement for efficiently recovering waste heat.09-11-2008
20100275600SYSTEM AND METHOD OF RECOVERING HEAT AND WATER AND GENERATING POWER FROM BITUMEN MINING OPERATIONS - A method recovering heat and water from a warm slurry, such as warm tailings from a oil sands extraction mining operation, is provided. The method comprises providing the tailings to a vacuum vessel, removing, from the vacuum vessel, warm vapor derived from the tailings, condensing the warm vapor in a condenser to produce water, and recovering the water from the condenser. Cool river or pond water can be warmed with the heat from the vapor for additional uses in the mining operation. Essentially pure water can be obtained in the process. This can also be achieved using one or flash vessels in series to condense the vapor. Power can also be generated from the vapor using a turbine.11-04-2010
20080202121Internal Combustion Engine with an Injector as a Compaction Level - The internal combustion engine includes a burner (08-28-2008
20120255305CARBON DIOXIDE RECOVERY SYSTEM AND METHOD - A carbon dioxide recovery system includes a high-pressure 10-11-2012
20130192230FOSSIL-FUEL-FIRED POWER PLANT - A power plant includes a boiler, a stream turbine generator, a post combustion processing system, a feed water regeneration processing system and a heat exchanger. Heat from the heat exchanger is used to regenerate (a) a reagent that absorbs carbon dioxide from flue gas and (b) a water-lean desiccant used to increase plant operating efficiency.08-01-2013
20120085098VAPOR EXPLOSION AND SHOCK WAVE GENERATING DEVICE, MOTOR, AND TURBINE DEVICE - Provided is a device which can reliably generate a vapor explosion. A device which can reliably generate a vapor explosion and shock waves is proposed. This device is provided as an experimental means for research and development of a vapor explosion and shock waves, and paves the way for applications to motors or turbines. A high-temperature liquid (04-12-2012
20130205784FORCED-FLOW STEAM GENERATOR - A forced-flow steam generator includes first and second steam generator pipes which form a surrounding wall, wherein the first and second steam generator pipes are welded in a gas-tight fashion and are traversable by flow in a vertical direction. A passage collector is arranged within the surrounding wall, wherein the passage collector connects the first steam generator pipes with the second steam generator pipes. The first steam generator pipes are connected at an outlet side to an inlet side of the second steam generator pipes, wherein the second steam generator pipes are connected in series with the first steam generator pipes. Each of the second generator pipes has a restrictor device. Further, a power plant with a forced-flow steam generator is provided.08-15-2013

Patent applications in class Power system involving change of state

Patent applications in all subclasses Power system involving change of state