An energy storage system has a pressure vessel that is exposed to ambient temperatures and that contains a working fluid which is condensable at ambient temperatures (CWF); a liquid reservoir in communication with one of the vessels and containing a liquid that is unvaporizable in the reservoir and in the vessel; and apparatus for delivering the liquid from the reservoir to the vessel. The CWF is compressible within the vessel upon direct contact with the liquid and is storable in a liquid state after being compressed to its saturation pressure. In a method, at least some of the liquid located in the vessel is propelled by the CWF towards a turbine to produce power. In one embodiment, a module has a first vessel having at least four ports, a second vessel at ambient temperatures, and a flow control component operatively connected to a corresponding conduit for selectively controlling fluid flow.
F03D 9/14 - Combinaisons des mécanismes moteurs à vent avec un appareil emmagasinant de l’énergie emmagasinant de l’énergie gravitationnelle potentielle utilisant des liquides
A well pumping apparatus including a discharge head (110), a drive string rod (130) in fluid communication with an inner cavity (142) of a production tubing (140), a pre-lubrication port (160) at the discharge head, and lubrication cups (134) installed along the drive string rod adjacent to sets of bearings (150) distributed along the drive string rod.
Turbine apparatus includes turbine wheels by which introduced motive fluid is expanded; a horizontally disposed turbine shaft which is rotatably supported by inlet-side and outlet-side bearings, such that the turbine wheels are fixedly connected to the turbine shaft between the inlet-side and outlet-side bearings; a turbine housing by which the turbine wheels and the outlet-side bearing are encased; and a bearing cartridge in which the inlet-side bearing is housed that is mounted externally to the turbine housing. The bearing cartridge is separable from the turbine housing to facilitate a maintenance operation when the inlet-side bearing is disengaged from the turbine shaft. In a method for accessing a malfunctioning inlet-side component contactable with the turbine shaft in order to perform a maintenance operation, the bearing cartridge is dismounted from a surface of the turbine housing and the bearing cartridge is axially displaced in a direction away from the turbine housing.
A geothermal district heating (DH) system includes a plurality of DH conduits each of the conduits extending to a corresponding heat consumer; means for delivering a DH-usable fluid through said plurality of DH conduits; a fluid circuit through which a geothermal fluid is flowable; and at least two heat exchangers, each of the heat exchangers configured to transfer heat directly or indirectly from the geothermal fluid to said DH-usable fluid with a total heat influx provided by the at least two heat exchangers to said DH-usable fluid that is sufficiently high to raise a temperature of the DH-usable fluid to a predetermined DH-usable temperature without need for any supplemental fossil fuel derived waste heat to be transferred to said DH-usable fluid.
F01K 11/02 - Ensembles fonctionnels de machines à vapeur caractérisés par des machines motrices faisant corps avec les chaudières ou les condenseurs les machines motrices étant des turbines
F01K 17/02 - Utilisation de la vapeur ou des condensats provenant soit du soutirage, soit de la sortie des ensembles fonctionnels de machines motrices à vapeur pour le chauffage, p.ex. industriel, domestique
F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
F01K 27/02 - Ensembles fonctionnels modifiés pour utiliser la chaleur perdue autre que celle provenant de l'évacuation, p.ex. la chaleur de frottement à l'intérieur de la machine motrice
F02C 6/18 - Utilisation de la chaleur perdue dans les ensembles fonctionnels de turbines à gaz à l'extérieur des ensembles eux-mêmes, p.ex. ensembles fonctionnels de chauffage à turbine à gaz
5.
SYSTEM FOR OPTIMIZING AND MAINTAINING POWER PLANT PERFORMANCE
A geothermal power plant related maintenance support system comprises: a thermodynamic calculation module for determining performance of specified geothermal power plant components; a plurality of. embedded sensors, each of which is embedded in a different geothermal power plant location and adapted to sense a corresponding real-time geothermal power plant parameter; a plurality of environmental sensors adapted to sense ambient conditions in the vicinity of the geothermal power plant; and a processor in data communication with each of said embedded sensors and environmental sensors.
F03G 7/04 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs utilisant les différences de pression ou les différences thermiques existant dans la nature
F03G 7/00 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs
F24T 10/40 - Collecteurs géothermiques fonctionnant sans source d’énergie externe, p.ex. utilisant la circulation thermosiphonique ou des tubes de chaleur
A binary power plant system, comprising: a vaporizer for vaporizing an organic motive fluid circulating in a closed Organic Rankine Cycle (ORC) by a heat source fluid in heat exchange relation therewith and producing wet organic motive fluid vapor having a quality of at least approximately 80 percent; and a single organic vapor, turbine of said ORC: having an inlet for receiving the wet organic motive fluid vapor, wherein organic motive fluid vapor is expanded in said single organic vapor turbine without causing turbine blades of the turbine to be subjected to erosion.
F01K 21/00 - Ensembles fonctionnels de machines motrices à vapeur non prévus ailleurs
F01K 7/18 - Ensembles fonctionnels de machines à vapeur caractérisés par l'emploi de types particuliers de machines motrices; Ensembles fonctionnels ou machines motrices caractérisés par un circuit de vapeur, un cycle de fonctionnement ou des phases particuliers; Dispositifs de commande spécialement adaptés à ces systèmes, cycles ou phases; Utilisation de la vapeur soutirée ou de la vapeur d'évacuation pour le réchauffage de l'eau d'alimentation les machines motrices étant uniquement du type turbine les turbines étant du type à pressions d'entrée multiples
The present invention provides wind guiding vane apparatus for mitigating a detrimental influence of cross winds flowing in tire vicinity of an air-cooled condenser (ACC) and through one or more fans, positioned in lateral direction of the ACC., to which ambient air is directed and discharged to the atmosphere after cooling condenser tubes of the ACC, comprising: one or more stationary wind guiding vanes positioned along at least a portion of an air flow streamline and below a plurality of condenser tubes of the ACC, wherein said, one or more wind guiding vanes are configured to redirect air flow during windy conditions towards a portion of said plurality of condenser tubes and at least one of the fans at such an angle that significantly deviates from perpendicular, fairly horizontal inflow. The one or more wind guiding vanes are also suitable to maintain a nominal flow rate of air during quiescent wind conditions..
F28B 1/06 - Condenseurs dans lesquels la vapeur d'eau ou autre vapeur est séparée de l'agent de refroidissement par des parois, p.ex. condenseur à surface utilisant l'air ou un autre gaz comme agent de refroidissement
F28B 9/00 - Systèmes auxiliaires, aménagements ou dispositifs accessoires
F28F 13/06 - Dispositions pour modifier le transfert de chaleur, p.ex. accroissement, diminution en affectant le mode d'écoulement des sources de potentiel calorifique
A power plant through which motive fluid flows including a vapor turbine into which motive fluid vapor is introduced and expanded so that power is produced, and a horizontal air-cooled condenser (ACC) for receiving and condensing the expanded motive fluid discharged from said vapor turbine. The condenser includes a plurality of mutually parallel and spaced condenser tubes across which air for condensing the motive fluid flows that are disposed at an angle of inclination with respect to a horizontal plane of at least 5 degrees, such that accumulated liquid condensate is evacuated by gravitational forces.
F28B 1/06 - Condenseurs dans lesquels la vapeur d'eau ou autre vapeur est séparée de l'agent de refroidissement par des parois, p.ex. condenseur à surface utilisant l'air ou un autre gaz comme agent de refroidissement
The present invention provides a turbine shaft bearing apparatus comprising inlet side and outlet side bearings for providing support to a turbine shaft to which are connected a plurality of turbine wheels such that the turbine shaft, the two spaced bearings, and the plurality of turbine wheels are coaxial. The outlet side bearing is protected from overheating by the motive fluid by a solid bearing housing which includes a conduit through which a lubricating medium for lubricating said outlet side bearing is supplied. The present invention is also directed to a turbine module comprising a plurality of axially spaced turbine wheels, a structured bleeding exit opening formed in an outer turbine casing; and a passage defined between two of the turbine wheels and in fluid communication with the bleeding exit opening, wherein expanded motive fluid vapor is extracted through said structured bleeding exit opening for heating the motive fluid condensate.
The present invention provides a cooling water supply system, comprising a condenser for cooling working fluid of a facility to a predetermined temperature; a cooling tower into which is injectable heated cooling water that has exited said condenser, for reducing the temperature of said heated cooling water primarily through evaporative cooling; a basin beneath said cooling tower, for receiving a non-evaporated portion of said heated cooling water discharged from the cooling tower; and flow control equipment for varying the level of a fluid characteristic of a water body of said cooling water within the basin, wherein the body of water, after achieving a predetermined low level of water fluid characteristic by said flow control equipment, remains at a sufficiently low temperature throughout a subsequent predetermined time period to generate a desired condensate temperature by a portion thereof that is delivered to said condenser, even when mixed with the cooling tower discharge which is of a higher temperature than the temperature of the body of water.
F28B 9/06 - Systèmes auxiliaires, aménagements ou dispositifs accessoires pour amener, recueillir et emmagasiner l'eau ou autre liquide de refroidissement avec possibilités de réfrigérer à nouveau l'eau ou autre liquide de refroidissement
11.
DISPATCHABLE POWER PLANT AND METHOD FOR USING THE SAME
The present invention provides a method for producing load-following power using low to medium temperature heat source fluid comprising the steps of reducing the power level produced by a Rankine cycle power plant producing load-following power operating on a low to medium temperature heat source fluid during one period of time.' storing heat not used during the first period of time; and using the heat stored for producing power during a second period of time.
F03G 6/00 - Dispositifs produisant une puissance mécanique à partir d'énergie solaire
F03G 7/04 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs utilisant les différences de pression ou les différences thermiques existant dans la nature
12.
CASCADED POWER PLANT USING LOW AND MEDIUM TEMPERATURE SOURCE FLUID
The present invention provides a method for operating a plurality of independent, closed cycle power plant modules each having a vaporizer comprising the steps of- serially supplying a medium or low temperature source fluid to each corresponding vaporizer of one or more first plant modules, respectively, to a secondary preheater of a first module, and to a vaporizer of a terminal module, whereby to produce heat depleted source fluid; providing a primary preheater for each vaporizer; and supplying said heat depleted source fluid to all of said primary preheaters in parallel.
F03G 7/04 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs utilisant les différences de pression ou les différences thermiques existant dans la nature
The present invention is directed to a power plant system providing fast ramping up and ramping down for satisfying a load, comprising a turbine module operating in accordance with an organic Rankine cycle or steam power cycle coupled to a generator, the generator supplying power to satisfy the load, a main conduit through which motive fluid vapor heated in the organic Rankine cycle or steam is supplied to the turbine module, and a flow control component operatively connected to the main conduit and a flow control component controller responsive to load conditions for automatically increasing the flow of the motive fluid vapor or steam to the turbine module during ramping up conditions and for automatically limiting the flow of the motive fluid vapor or steam to said turbine module during ramping down conditions.
F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
H02P 9/02 - Dispositions pour la commande de génératrices électriques de façon à obtenir les caractéristiques désirées à la sortie - Détails
The present invention is directed to a system for generating power from fuel cell waste heat, comprising: at least one fuel cell module for generating power and producing waste heat; a bottoming cycle power block through which a motive fluid circulates to generate power; a waste heat heat-transfer unit for transferring heat from exhaust gases of the at least one fuel cell module to the bottoming cycle power block motive fluid thereby producing a desired combined power level from the at least one fuel cell module and the bottoming cycle power block.
F01K 23/06 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle
F01K 23/10 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle le fluide à la sortie de l'un des cycles chauffant le fluide dans un autre cycle
15.
METHOD AND APPARATUS FOR PRODUCING POWER FROM TWO GEOTHERMAL HEAT SOURCES
A method for producing power from two geothermal heat sources includes: separating a first geothermal fluid from a first geothermal heat source into geothermal vapor comprising steam and non-condensable gases, and geothermal brine; supplying the geothermal vapor to a vaporizer; vaporizing a preheated motive fluid using heat from the geothermal vapor, 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 to produce condensed motive fluid; and preheating the condensed motive fluid in a preheater using heat from a second geothermal fluid from a second geothermal heat source having a lower temperature and salinity content that the first geothermal fluid, thereby producing the preheated motive fluid, make-up water and heat-depleted geothermal brine.
F01K 23/04 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de condensation provenant de l'un des cycles chauffant le fluide dans un autre cycle
F01K 7/00 - Ensembles fonctionnels de machines à vapeur caractérisés par l'emploi de types particuliers de machines motrices; Ensembles fonctionnels ou machines motrices caractérisés par un circuit de vapeur, un cycle de fonctionnement ou des phases particuliers; Dispositifs de commande spécialement adaptés à ces systèmes, cycles ou phases; Utilisation de la vapeur soutirée ou de la vapeur d'évacuation pour le réchauffage de l'eau d'alimentation
F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
16.
METHOD AND APPARATUS FOR STIMULATING A GEOTHERMAL WELL
The present invention provides a method for stimulating a sub-commercial geothermal well, comprising the steps of drilling a stimulating well; isolating a corresponding zone in said stimulating well by means of a plurality of vertically spaced swell packers that are swellable when contacted by subterraneously heated geothermal brine present in said stimulating well and are resistant to the high temperature of said brine; injecting? stimulating fluid into said stimulating well such that it will flow only through a zone of said well that is not isolated; and allowing said stimulating fluid to exit said well from a non-isolated zone located at a desired depth into a surrounding geological formation in order to hydraulically reopen a fracture or a system of fractures within said formation at said desired depth that will be connected with said existing well to be stimulated.
The present invention provides a method for selecting the location of a stimulating well, comprising the steps of conducting a geological study of a field containing a geothermal hydrothermal resource by operating geological useful equipment, determining a maximum horizontal stress line within said field by means of a device, generating a map of existing wells including a plurality of sub- commercial wells within said field relative to said maximum horizontal stress line, measuring a distance between each of said sub-commercial wells and the maximum horizontal stress line, determining that those sub-commercial wells aligned with, or located relatively close to the maximum horizontal stress line are stimulatable, and selecting a location of a stimulating well for stimulating the stimulatable well that is separated less than an anticipated fracture propagating distance from said stimulatable well.
The present invention comprises a multi-pass air-cooled condenser, comprising a first-pass bundle of heat exchanger tubes into which working fluid containing non-condensable gas (NCG) is introducible at such a velocity to ensure that a NCG portion of said working fluid will remain together with a non-NCG portion of said working fluid even after being air cooled and from which said working fluid is extractable to another bundle of heat exchanger tubes maintaining a temperature of said extracted working fluid close to the condensation temperature of said non-NCG portion, wherein said NCG portion is separable from said non-NCG portion in a final-pass bundle of heat exchanger tubes of said condenser such that the percentage of separated NCGs in said final-pass tubes is significantly greater than the percentage of NCGs in said first-pass bundle.
The present invention provides a geothermal based heat utilization system for just about preventing scaling of geothermal fluid in a heat exchanger, comprising a mixing unit upstream to a heat exchanger of said system and in which separated brine, steam condensate and non-condensable gas portions are mixed so as to just about reconstruct the geothermal fluid to just about equilibrium conditions such that dissolved solids are assured not to precipitate in the heat exchanger.
A method for producing power from geothermal fluid includes: separating the geothermal fluid in a flash tank into geothermal 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 steam to produce geothermal steam condensate and vaporized motive fluid, wherein-the heat content in the geothermal steam 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 geothermal steam condensate and the geothermal brine, thereby producing the preheated motive fluid, make¬ up water and heat-depleted geothermal brine.
The present invention provides an apparatus for maintaining the operation of a geothermal production pump which comprises one or more impellers and a vertical line shaft for driving said one or more impellers, comprising a liquid buffer for isolating a discharge column through which pumped geothermal fluid including non-condensable gases flows from a lubrication column through which oil for lubricating one or more bearings of the line shaft flows, the liquid buffer being interposed between the discharge column and an outlet of the lubrication column to prevent infiltration of the non-condensable gases into the lubrication column.
A heat exchanger system for cooling liquid having a plurality of finned tube arrays and a plurality of fans for inducing air through the finned tube array comprising: at least one wind deflector installed along the long side of the finned tube arrays on at least one side of the arrays; and method for the same is also disclosed, including the steps of: setting the angle of deflection of the wind deflectors other than the angle of deflection of the uppermost position of the wind deflectors; collecting readings of outlet temperature sensor of the heat exchanger, ambient temperature, wind sensor and inlet air pressure sensor of the heat exchanger; recording the readings; comparing the to previous readings; and carrying out a correction command if the readings have changed.
F24F 13/15 - Organes de réglage de l'écoulement d'air, p.ex. persiennes, grilles, volets ou plaques directrices mobiles, p.ex. registres à éléments basculants, p.ex. persiennes à lamelles parallèles basculables simultanément
F28F 13/06 - Dispositions pour modifier le transfert de chaleur, p.ex. accroissement, diminution en affectant le mode d'écoulement des sources de potentiel calorifique
A solar power plant in a new split configuration of a solar Brayton cycle or Brayton/Rankine combined cycle which comprises an array of heliostat mounted mirrors, a solar receiver and a high pressure section of a Brayton cycle power plant mounted near a top of a solar tower, a low pressure section of the Brayton Cycle power plant and the electric generator mounted near or at ground, level.
F02C 3/00 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de produits de combustion comme fluide de travail
F02C 6/00 - Ensembles fonctionnels multiples de turbines à gaz; Combinaisons d'ensembles fonctionnels de turbines à gaz avec d'autres appareils; Adaptations d'ensembles fonctionnels de turbines à gaz à des applications particulières
B60L 8/00 - Propulsion électrique à partir d'énergie tirée des forces de la nature, p.ex. du soleil ou du vent
F02G 3/00 - Ensembles fonctionnels de moteurs à produits de combustion à déplacement positif
F02G 1/00 - Ensembles fonctionnels de moteurs à gaz chauds à déplacement positif
B60K 16/00 - Dispositions relatives à l'alimentation des ensembles de propulsion sur les véhicules en énergie tirée des forces de la nature, p.ex. du soleil ou du vent
24.
APPARATUS AND METHOD FOR INCREASING POWER PLANT EFFICIENCY AT PARTIAL LOADS
A method for increasing power plant efficiency during periods of variable heat input or at partial loads is described, comprising the steps of cycling a motive fluid through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission; and adjusting a percentage of a superheated portion of the motive fluid during periods of variable heat input or at partial loads while virtually maintaining the inlet temperature and power plant thermal efficiency. Furthermore, a power plant is described having increased efficiency during periods of variable heat input or at partial loads.
The present invention provides a method for preventing damage to a downhole pump impeller of a downhole pump such as a geothermal downhole pump, comprising the steps of setting a rotatable part of a downhole pump to a selected depth, monitoring the depth of the rotatable part, determining that the depth of the rotatable part has significantly changed, and taking a corrective action to return the depth of the rotatable part to said selected depth in order to prevent damage to an impeller that is liable to be caused by a change in depth of the rotatable part. The present invention is also directed to a downhole pump such as a geothermal downhole pump, comprising a line shaft, an impeller engaged with the line shaft for pressurizing fluid to be extracted from a well, and monitoring apparatus for monitoring the depth of a distal end of the line shaft in order to prevent damage to the impeller that is liable to be caused by a change in depth of the distal end.
G01V 3/00 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
G01V 1/40 - Séismologie; Prospection ou détection sismique ou acoustique spécialement adaptées au carottage
G01B 5/02 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer la longueur, la largeur ou l'épaisseur
G01B 5/18 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer une profondeur
26.
CASCADED POWER PLANT USING LOW AND MEDIUM TEMPERATURE SOURCE FLUID
The present invention provides a method for operating a plurality of independent, closed cycle power plant modules each having a vaporizer comprising the steps of serially supplying a medium or low temperature source fluid to each corresponding vaporizer of one or more first plant modules, respectively, to a secondary preheater of a first module, and to a vaporizer of a terminal module, whereby to produce heat depleted source fluid; providing a primary preheater for each vaporizer; and supplying said heat depleted source fluid to all of said primary preheaters in parallel.
F01K 23/02 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement
27.
GEOTHERMAL BINARY CYCLE POWER PLANT WITH GEOTHERMAL STEAM CONDENSATE RECOVERY SYSTEM
A geothermal based, binary cycle power plant is provided, comprising: a vaporizer for vaporizing pre-heated organic motive fluid by means of geothermal steam; two organic vapor turbines operating in parallel and coupled to a common generator, each of said turbines being driven by vaporized organic motive fluid supplied to each turbine; two recuperators for heating the organic motive fluid by means of a corresponding organic vapor turbine discharge; and two condensers for condensing heat depleted motive fluid exiting said two recuperators, respectively. A geothermal steam condensate recovery system is also provided, comprising a source of geothermal steam for vaporizing a organic motive fluid and producing geothermal steam condensate, and conduit means through which geothermal steam condensate is delivered to a supply of cooling liquid used to condense the organic motive fluid, the delivered geothermal steam condensate serving as make-up liquid for evaporated cooling liquid.
F03G 7/04 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs utilisant les différences de pression ou les différences thermiques existant dans la nature
28.
DIAGNOSTIC SYSTEM AND METHOD FOR AN ESSENTIAL TURBINE VALVE
The present invention is a diagnostic method for determining the operability of an essential turbine valve, including the steps of exercising an essential valve operatively connected to a turbine inlet line through which a power plant motive fluid is supplied to a turbine by causing the essential valve to be partially closed for a predetermined exercising duration; detecting a drop in power produced by an electric generator coupled to the turbine resulting from said partial closing of the essential valve; comparing the detected power drop with a predetermined marginal power drop; and associating the essential valve with an operable status for reliably regulating the flow of motive fluid therethrough when the actual power drop is substantially equal to the predetermined marginal power drop.
A method and system are presented for storing solar collected heat and using the stored heat to produce power. The method includes diverting solar heated fluid at a temperature greater than a power plant block (PPB) temperature from a heat transfer circuit to a liquid water storage medium maintained at a temperature less than the PPB temperature and thermally storing the heated portion; and transferring heat from the liquid water storage medium to a fluid during periods of decreased solar radiation levels to produce power by the heatedtransfer fluid. The solar thermal storage system includes a hot water storage medium (HWSM), a cold water storage medium (CWSM), conduit means interconnecting the HWSM and said CWSM, and a storage medium heat exchanger for heating water flowing from the CWSM to the HWSM when the solar radiation is above a nominal value to establish a power plant block (PPB) temperature.
The present invention provides a waste heat recovery system, comprising a closed fluid circuit through which an organic motive fluid flows, heat exchanger means for transferring heat from waste heat gases to the motive fluid, means for flashing the motive fluid which exits the heat exchanger means into a high pressure flashed vapor portion, means for flashing liquid non-flashed motive fluid producing a low pressure flashed vapor portion, a high pressure turbine module which receives said high pressure flashed vapor portion, to produce power, and a low pressure turbine module which receives a combined flow of motive fluid vapor comprising the low pressure flashed vapor portion and discharge vapor from the high pressure turbine module whereby additional power is produced.
F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs
A power system is provided for delivering a custom Ievel of electrical power to an industrial or commercial facility, comprising a local generator connected to a turbine operating in accordance with an organic Rankine cycle, the local generator having a capacity at least greater than a maximum anticipated power Ievel needed for the electrical needs or a local industrial or commercial facility. One or more control devices are provided for operatively connected to the local generator for regulating active and reactive power generated by the generator for a detector for sensing active voltage induced by said generator. The power system can also function as a fast acting spinning reserve.
F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
A gas turbine exhaust gas cooling system includes a conduit for a primary gas turbine exhaust gas extending from the primary gas turbine to an inlet of a desired industrial process apparatus, a work producing thermodynamic cycle in which a working fluid is heated and expanded, and at least one heat exchanger by which heat is sufficiently transferred from the primary gas turbine exhaust gas to the working fluid to produce a low temperature heating medium downstream of the heat exchanger at a predetermined temperature and energy level which are sufficient for effecting a desired industrial process.
A waste heat recovery system includes a high pressure turbine and a low pressure turbine, in which the high pressure turbine receives high pressure working fluid vapor, the low pressure turbine receives low pressure working fluid vapor and the high pressure turbine also supplies low pressure working fluid vapor to the low pressure turbine. A recuperator receives working fluid vapor from the low pressure turbine. The recuperator produces heated condensate, at least a portion of which is provided to a high pressure vaporizer. The high pressure vaporizer is configured to receive from a high temperature heat source and produces high pressure working vapor used to power the high pressure turbine. The remaining condensed fluid is provided to a low pressure vaporizer which is configured to receive heat from a low- temperature heat source, thereby producing low pressure working fluid vapor used to power the low pressure turbine.
F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
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.
F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs
According to present invention, a method is provided for operating a multi-heat source power plant using a low-medium temperature heat source fluid, wherein the multi-heat source power plant includes a turbine or expander run by an organic motive fluid, comprising preheating the organic motive fluid using the low-medium temperature heat source fluid and thereafter providing further heat from an additional heat source to vaporize the motive fluid which is supplied to the turbine or expander Furthermore, in an embodiment of the present invention, the present invention provides an apparatus comprising a heat exchanger suitable to pre-heat an organic motive fluid with a low-medium temperature geothermal fluid and solar energy collecting means suitable to directly or indirectly provide heat to the pre-heated organic motive fluid for heating and vaporizing the motive fluid.
The present invention provides an organic Rankine cycle power system, which comprises means for superheating vaporized organic motive fluid, an organic turbine module coupled to a generator, and a first pipe through which superheated organic motive fluid is supplied to the turbine, wherein the superheating means is a set of coils through which the vaporized organic motive fluid flows and which is in direct heat exchanger relation with waste heat gases.
The present invention provides a power and regasification system based on liquefied natural gas (LNG), comprising a vaporizer by which liquid motive fluid is vaporized, said liquid motive fluid being LNG or a motive fluid liquefied by means of LNG; a turbine for expanding the vaporized motive fluid and producing power; heat exchanger means to which expanded motive fluid vapor is supplied, said heat exchanger means also being supplied with LNG for receiving heat from said expanded fluid vapor, whereby the temperature of the LNG increases as it flows through the heat exchanger means! a conduit through which said motive fluid is circulated from at least the inlet of said vaporizer to the outlet of said heat exchanger means; and a line for transmitting regasified LNG.
F17C 9/02 - Procédés ou appareils pour vider les gaz liquéfiés ou solidifiés contenus dans des récipients non sous pression avec changement d'état, p.ex. vaporisation
38.
INTEGRATED ENGINE GENERATOR RANKINE CYCLE POWER SYSTEM
The present invention provides an integrated engine generator Rankine cycle power system which increases the efficiency of the use of its power output. The system comprises a closed Rankine cycle power generating unit through which working fluid flows and an engine generator, the closed Rankine cycle power generating unit including a waste heat boiler for vaporizing said working fluid by means of exhaust gases discharged from the engine generator, an expander in which the vaporized working fluid expands and performs work to drive a shaft for producing mechanical power, or an electric generator coupled thereto and adapted to produce electrical power, from both the engine generator and the expander, and an external lubrication system in fluid communication with the expander wherein one or more closed Rankine cycle power generating unit components are operationally connected to the electric generator.
F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs
39.
METHOD AND SYSTEM FOR PRODUCING POWER FROM A SOURCE OF STEAM
The present invention provides a power plant system for producing power using a source of steam, comprising: a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through the vaporizer; at least one turbine wherein one of the turbines is an organic vapor turbine to which the vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; a recuperator for heating organic vapor condensate flowing towards the vaporizer the expanded organic vapor exhausted from the organic vapor turbine; and two or more stages of preheating means for additionally heating organic working fluid exiting the recuperator and flowing towards the vaporizer, wherein fluid extracted from one of the turbines is delivered to one of the stages of preheating means.
The present invention provides a power and regasification system based on liquefied natural gas (LNG), comprising a vaporizer by which liquid working fluid is vaporized, said liquid working fluid being LNG or a working fluid liquefied by means of LNG; a turbine for expanding the vaporized working fluid and producing power; heat exchanger means to which expanded working fluid vapor is supplied, said heat exchanger means also being supplied with LNG for receiving heat from said expanded fluid vapor, whereby the temperature of the LNG increases as it flows through the heat exchanger means; a conduit through which said working fluid is circulated from at least the inlet of said vaporizer to the outlet of said heat exchanger means and a line for transmitting regasified LNG.
F01K 27/00 - Ensembles fonctionnels transformant la chaleur ou l'énergie d'un fluide en énergie mécanique, non prévus ailleurs
F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs
The present invention provides an improved, commercially available organic working fluid that can be used in organic Rankine cycle (ORC) power plants or units and similar system; as an intermediate fluid for heat- recovery. Such organic working fluids are also operable as heat transferred fluids. The working fluid comprising at least one highly branched, heavy iso-paraffin hydrocarbons, or a mixture of two or more of such hydrocarbons. A preferred sub-class of the class of the branched iso-paraffins in organic working fluids of the present invention includes 8 to 20 carbon atom containing hydrocarbons having at least one methyl radical (CH3) arranged to achieve a highly stable compound.
F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
42.
USING GEOTHERMAL ENERGY FOR THE PRODUCTION OF POWER
The invention comprises an apparatus for enhancing the flow of geothermal fluid from at least one injection well to at least one production well, which comprises a first horizontal goethermal well, which is used as said injection well and into which water is injected; a second horizontal, geothermal well, which is used as said production well and from which geothermal fluid issues, wherein said second, horizontal, production, geothermal well is substantially horizontally and vertically spaced from said first, horizontal, injection, geothermal well and located at a shallower depth than said first, horizontal, injection, geothermal well; and means for producing a pressure difference between said first horizontal, injection well and said second horizontal, production well and utilizing the water density difference induced by he temperature difference. Preferably, binary geothermal power plants or combined cycle geothermal power plants can be used to produce power from geothermal fluid recovered from the production.
The present inventive subject matter is drawn to apparatus for producing hydrogen using geothermal energy comprising: heating means for heating a solution for use in electrolysis with heat from geothermal fluid and producing a heated solution; and electrolysis means for producing hydrogen by electrolysis of said heated solution. The present invention also relates to a method for producing hydrogen using geothermal energy comprising: heating a solution for use in electrolysis with heat from geothermal fluid and producing a heated solution; and producing hydrogen by electrolysis of said heated solution. In addition, in accordance with the present invention, apparatus for producing hydrogen using geothermal energy is provided comprising: heating means for heating a solution for use in electrolysis with heat from geothermal fluid and producing a heated solution; electrolysis means for producing hydrogen by electrolysis of said heated solution; and power producing means for producing power using heat present in said geothermal fluid.