Abstract: Briefly described, embodiments of this disclosure include multi-package buckets, yarn twisting or cabling apparatus including, methods of twisting or cabling yarn, and the like.

Abstract: One embodiment of the present application is a gas turbine engine with a compressor that includes a variable geometry mechanism to vary working fluid flow area. A desired state of this mechanism is selected different than a current state to change the amount of flow area. The mechanism has a hysteresis band corresponding to a difference between increasing the flow area to reach the desired state and decreasing the flow area to reach the desired state. To control operation of the mechanism within this hysteresis band, a determination is made whether the desired state corresponds to a greater flow area or a lesser flow area relative to the current state.

Abstract: An anti-icing system and method for an aircraft engine nacelle. The nacelle has an inlet lip that defines a leading edge of the nacelle and has a cross-sectional shape and oppositely-disposed exterior and interior surfaces. An anti-icing system contacts at least the inlet lip of the nacelle. The anti-icing system includes at least one heating element having a cross-sectional shape that conforms to the cross-sectional shape of the inlet lip and in which carbon nanotubes are oriented and arranged to conduct electrical current through the heating element. Passing an electrical current through the heating element causes Joule heating of the heating element and heating of the inlet lip by thermal conduction.

Abstract: A fuel control assembly for use in a gas turbine engine. The fuel control assembly includes a first trip device configured to selectively release a fluid pressure from a trip fluid system. At least one gas fuel control valve is coupled to the first trip device. The gas fuel control valve includes a second trip device for moving the gas fuel control valve to a safe position during a purge air operation.

Abstract: An object of the present invention is to provide a gas turbine device capable of producing a mixed gas in which three or more types of gases are evenly mixed, and of doing the like. To achieve this, in a gas turbine device configured to burn in a combustor (2) a fuel gas supplied from a fuel gas supplier (8), together with a compressed air (b) supplied from an air compressor (3), and to rotationally drive a gas turbine 1 by a combustion gas (c) generated at the burning, the fuel gas supplier (8) includes two mixers (15, 16), and is configured to produce a mixed gas (a) by mixing three types of gases of a first gas (I), a second gas (II), and a third gas (III) in the mixers (15, 16) in ascending order of specific gravity or in descending order of specific gravity, and to supply the mixed gas (a) to the combustor (2) as the fuel gas.

Abstract: A method of operating a gas turbine engine is disclosed having the steps of directing a flow of air to a front fan stage at a selected fan flow rate, fan speed and front fan stage pressure ratio corresponding to a selected first operating power level, pressurizing a portion of the flow from the front fan stage in a aft fan rotor to a first tip pressure ratio to generate a first overall fan pressure ratio, selecting a second operating power level that is lower than the first operating power level and reducing the flow in the aft fan rotor and pressurizing to a second tip pressure ratio to generate a second overall pressure ratio that is substantially lower than the first overall fan pressure ratio while the flow rate in the front fan stage is held substantially constant.

Abstract: An airborne mobile platform that has at least one turbofan engine assembly having a fan driven by a core engine, a short nacelle around the fan and a forward portion of the core engine, and a fan exhaust duct through the nacelle. A mixer duct shell is disposed substantially coaxial with and extending forwardly into the fan exhaust duct to provide a mixer duct between the mixer duct shell and a core engine shroud of the core engine. At least a portion of the mixer duct shell has a honeycomb core structure having an inner surface and an outer surface, with an acoustic lining on one of the inner or outer surfaces. The acoustic lining attenuates sound emanating from the turbofan engine assembly.

Abstract: An integrated, single piece mixer-center body ventilation apparatus is disclosed for use with a turbofan jet engine. The apparatus may incorporate a circumferential forward body portion adapted to be coupled to an aft end of a core engine turbine case of the jet engine, and a center body tube portion integrally formed with the forward body portion and having an axially opening vent exit. The forward body portion may have a plurality of inner mixer flow paths in communication with scalloped projecting portions. The inner mixer flow paths direct a pressurized core exhaust flow through the mixer device and mix the pressurized core exhaust flow with a portion of a pressurized fan exhaust flow, to thus significantly cool the pressurized core exhaust flow.

Abstract: The present invention relates to pulse jet engines. More specifically, the present invention concerns a pulse jet engine which uses fluidic valving rather than unreliable mechanical valves, incorporates two combustion chambers with approximately the same but approximately 180 degree out-of-phase resonance frequencies to reduce noise through destructive interference of sound waves, and controls fuel injection and ignition within the two combustion chambers to increase efficiency by achieving more rapid and complete combustion.

Abstract: The thrust vectoring apparatus comprises: a housing defining a primary outlet for emitting the primary jet; Coanda surfaces extending from opposing regions of said housing, and radially spaced from the primary outlet such that a step is defined between each Coanda surface and the primary outlet; ducts leading from a fluid source to secondary outlets; and flow control means operable to control the mass flow through the secondary outlets. When the jet engine operates to exhaust a primary jet through the primary outlet, low pressure regions are formed in the vicinity of the steps. Each secondary outlet is located adjacent one of the Coanda surfaces so as to emit a secondary flow into a low pressure region. On activation of the secondary flow by the flow control means, the primary jet is entrained by the Coanda surface opposing the Coanda surface adjacent said the secondary outlet from which the secondary flow has been emitted.

Abstract: A method for improving interpenetration, mixing, and combustion between a fuel and oxidizer reactant mixture and combustion product gases in engines having a combustor includes the step of providing an engine having a combustor in which the reaction mixture and product gases are subjected to acceleration directed transverse to a direction along which the reactant mixture flows through the combustor during combustion. One or more catalyst elements are positioned within the combustor to generate Rayleigh-Taylor instability and thereby enhance interpenetration of the reactant mixture and product gases within the combustor chamber during combustion.

Abstract: A nacelle assembly for a high-bypass gas turbine engine includes a fan nacelle that includes a first fan nacelle section and a second fan nacelle section, the second fan nacelle section movable relative to the first fan nacelle section. A cascade array is mounted to the first fan nacelle section for movement relative thereto between a stored position and a deployed position, the stored position locates the cascade array at least partially within the first fan nacelle section.

Abstract: A gas turbine engine is disclosed having a fan system with a front stage fan rotor and an aft fan rotor coupled to a low-pressure turbine, a core having a compressor coupled to a high-pressure turbine, an annular inner bypass passage and an annular outer bypass passage. The aft fan rotor has a row of aft fan blades having an arcuate splitter that forms a portion of an inner flow passage and an outer flow passage wherein the aft fan blade pressurizes an inner flow and an outer flow and wherein the fan tip pressure ratio can be changed while the air flow into the front stage fan rotor is held substantially constant.

Abstract: An adaptive gas turbine engine is disclosed having a convertible fan system adapted to have a variable fan pressure ratio while the air flow into the convertible fan system remains substantially constant and an adaptive core having a compressor capable of maintaining a substantially constant core pressure ratio while a core airflow flow rate is varied.

Abstract: Provided is a hybrid rocket using catalytic decomposition of oxidizer, which generates thrust by injecting high temperature oxygen and steam formed by catalytic decomposing liquid oxidizer into solid fuel and thereby auto igniting and combusting the solid fuel without a separate igniter.

Abstract: A multi-pulse rocket is equipped with a thermally insulating barrier that serves as a rupture disk or a movable plug or plate separating staged propellant grains. When a rupture disk it used, the disk can be equipped with a pyrotechnic actuator to weaken the disk upon command, enabling the propellant grain on the fore side of the disk to burst the disk at a relatively low pressure when ignition of the propellant grain is needed for additional thrust. Rupturing of the disk can also be controlled by attitude maneuvering ports on the fore side of the barrier whose open or closed conditions are controlled by independently operable closures. When a movable plug is used, the plug is movable between a closed position separating rocket chamber into subchambers isolating the propellant grains from each other and an open position allowing the flow of combustion gas between the two subchambers to achieve additional axial thrust.

Abstract: In various embodiments, the present disclosure provides a thruster that utilizes a nanothermite material as a propellant. The thruster generally includes a body having at least one sidewall and a bottom wall that define a propellant chamber having a closed repulsion end and an opposing open exhaust end. The thruster additionally includes a nanothermite propellant configured within the propellant chamber to have a selected density that dictates a reaction propagation rate of the nanothermite propellant such that the reaction propagation rate will have a selected one of two distinctly different force-time profiles.

Abstract: In a method for the after-treating of an exhaust gas from a preferably direct-injection and/or spark-ignition internal combustion engine, the exhaust gas is fed through a catalytic converter system connected downstream of the internal combustion engine. The system has at least one catalyst with a noble metal depletion having at least the elements palladium and rhodium which are present in a weight ratio of >5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 11:1, or 12:1. In the new European driving cycle, the catalyst exceeds a temperature TK of 300° C., 450° C., 550° C., 600° C. within a time interval of 30 s, preferably 20 s, especially preferably 10 s after starting the engine, and/or the cumulative untreated emissions of hydrocarbons not exceeding 0.05 g/km and/or of nitrogen oxides not exceeding 0.04 g/km within a time interval of 10 s, preferably 20 s, especially preferably 30 s after starting the engine, and/or the engine achieving at least the emissions limit values of EU standard 4, preferably EU standard 5.

Abstract: A control system includes a temperature determination module and a catalyst protection module. The temperature determination module determines a temperature of exhaust gas based on a resistance of a heating element of an oxygen sensor. The catalyst protection module adjusts an operating parameter of an engine to decrease the temperature of the exhaust gas when the temperature of the exhaust gas is greater than a threshold temperature. The threshold temperature is based on a temperature that damages a catalyst in an exhaust system.

Abstract: A system is provided for sequestering carbon dioxide emitted in exhaust gas from an engine. The exhaust gas may be cooled using heat exchange techniques, for example reverse flow heat exchangers. Carbon dioxide may be separated from the exhaust gases, for example using fractional distillation, heat exchangers, and turbo chargers. The separated carbon dioxide may be stored, for example using injection deep into the earth for enhancing natural gas and oil extraction. Alternatively, the separated carbon dioxide may be cooled to solid carbon dioxide and stored, for example, in an LNG tank for use as ballast onboard a ship or for use in industry.

Abstract: A method and system to reduce NOx emissions from an engine connected to a fuel tank and an exhaust line, the apparatus including, a reformer to reform the fuel into hydrogen (H2); a fuel cell stack to convert the hydrogen into electricity; a reduction unit disposed on the exhaust line to convert the NOx into N2; a first bypass line to provide a fluid communication between the first fuel tank and the fuel reformer; a second bypass line to provide a fluid communication between the fuel reformer and the fuel cell stack; a first reformate line to provide a fluid communication between the second bypass line and the exhaust line. The hydrogen is mixed with the NOx in the exhaust line, and then the reduction unit uses the hydrogen to convert the NOx into nitrogen (N2).

Abstract: A motor-vehicle engine system comprises an envelope configured to transmit exhaust. The envelope encloses a first array of filtration cells downstream of a second array of filtration cells. Each cell of the first array has one open end and one closed end. Each cell of the second array has one or two open ends. The system further comprises a fuel injector configured to increase a temperature in the envelope when soot is evenly distributed between the first and second arrays.

Abstract: A method for operating an exhaust emission control system of a motor vehicle internal combustion engine, in the exhaust gas line of which an oxidation-catalytically active exhaust emission control component is arranged upstream of a SCR-catalyst is provided. An ageing state of the oxidation-catalytically active exhaust emission control component is determined by correlating a hydrocarbon fraction present in the exhaust emission upstream of the oxidation-catalytically active exhaust emission component with a simultaneous nitrogen oxide conversion of the SCR-catalyst.

Abstract: A method for operating an exhaust-gas system of an internal combustion engine having at least one particle separator and a catalytic converter, includes at least the following steps: a) carrying out processes in the internal combustion engine with lambda control about a control value; b) identifying a regeneration process of the particle separator; c) determining an oxygen demand for the regeneration process of the particle separator; and d) adapting the lambda control by the defined oxygen demand for a time period of the regeneration process of the particle separator. A motor vehicle having a spark-ignition engine and being suitable for carrying out the method, is also provided.

Abstract: An engine control system includes an injection determination module, a correction factor determination module, and a regeneration control module. The injection determination module determines a desired amount of hydrocarbons (HC) to inject into exhaust gas produced by an engine based a flow rate of the exhaust gas. The correction factor determination module determines a correction factor for the desired amount of HC based on engine speed and engine load. The regeneration control module controls injection of an adjusted amount of HC into the exhaust gas during regeneration of a particulate matter filter, wherein the adjusted amount of HC is based on the desired amount of HC and the correction factor.

Abstract: An exhaust system for a turbocharged internal combustion engine comprises a first exhaust conduit extending between a first engine cylinder and a turbocharger inlet and is configured to conduct exhaust gas therebetween. A second exhaust conduit extends between a second engine cylinder and an in inlet for an exhaust gas recirculation system and is configured to conduct exhaust therebetween. An exhaust gas bypass extends between, and is in fluid communication with, the first and second exhaust conduits and is configured to divert exhaust gas flowing through the second exhaust gas conduit to the first exhaust gas conduit, and the turbocharger inlet, under conditions of varying exhaust gas recirculation demand of the internal combustion engine.

Abstract: Various systems and methods are described for controlling a diesel aftertreatment system coupled to an exhaust system of an engine which includes a selective catalytic reduction (SCR) catalyst and a diesel particulate filter (PF). In one example, a threshold amount of urea injected to the SCR catalyst is adjusted based on an amount of soot generated by the engine and the total amount of urea injected to the SCR catalyst is limited by the threshold. For example, when the amount of soot generated by the engine is below a first threshold amount, the threshold amount of urea injection is reduced. When the amount of soot generated by the engine is above a second threshold amount, which is greater than the first threshold amount, the threshold amount of urea injection is increased.

Abstract: A device for reducing pollution of an internal combustion engine, including a collection of monolithic elements of honeycomb type connected by a jointing compound, each element incorporating a set of adjacent cells of mutually parallel axes separated by porous walls, which cells are plugged by plugs at one or other of their ends to delimit inlet chambers opening onto a gas intake face and outlet chambers opening onto a gas discharge face such that gas that is to be filtered passes through the porous walls, the collection being inserted in a metal casing by a compacted fibrous mat. A jointing compound has a three-point flexural modulus of rupture of between 0.5 and 6 MPa, the jointing compound has a dynamic Young's modulus less than or equal to 17 GPa, the mat has a mean density in the compacted state of between 0.30 and 0.54, and the mean thickness of the mat in the compacted state is between 2 and 8 mm.

Abstract: A general purpose property of an exhaust gas purifying device for mounting is improved by increasing the attaching pattern of an exhaust gas purifying device, in the case that the exhaust gas purifying device is attached to a diesel engine. An exhaust gas purifying device is provided with gas purifying filters purifying an exhaust gas discharged from a diesel engine, inner cases internally provided with the gas purifying filters, and outer cases internally provided with the inner cases. An exhaust gas inlet pipe having an exhaust gas inlet side is provided in the midstream portion in a longitudinal direction of the outer case. An exhaust gas inflow port is provided in one end side in a longitudinal direction of the catalyst outer case. An exhaust gas outlet side of the exhaust gas inlet pipe is structured such as to be connected to the exhaust gas inflow port of the catalyst outer case.

Abstract: An object of the present invention is to provide an engine having an exhaust gas treatment apparatus attached thereto, wherein an exhaust pipe 13 can be prevented from being damaged by a vibration of the engine body 1. To achieve the object, in the engine having the exhaust gas treatment apparatus attached thereto in which an exhaust gas treatment apparatus 4 is supported by an engine body 1 and the engine body 1 and the exhaust gas treatment apparatus 4 communicate with each other through an exhaust pipe 13, the casing of the exhaust gas treatment apparatus consists of a plurality of casing units 5, 6, and 7 separable from each other, connection flanges 8, 9, 10, and 11 are disposed in respective end portions of the casing units 5, 6, and 7, the casing units 5, 6, and 7 are coupled together by a connection of the connection flanges 8, 9, 10, and 11, and the exhaust gas treatment apparatus 4 is supported by the engine body 1 through the connection flanges 8, 9, 10, and 11.

Abstract: An engine arrangement including an internal combustion engine and an energy recovering system includes an exhaust line collecting exhaust gas from the engine, a filter having an active portion inserted between two successive parts of the exhaust line, in order to hold the particles contained in the exhaust gas, and filter rotating means designed to rotate the filter so as to shift the active portion of the filter, a secondary line carrying intake air towards an area of said filter distinct from the active portion, according to a direction opposite from an exhaust gas flowing direction inside the filter, so as to sweep the particles away from the filter and release them downstream, inside the secondary line. The secondary line includes a first arrangement, located downstream from the filter, for burning the particles and thereby heating air flowing in the secondary line, and a second arrangement capable of recovering the heat into work.

Abstract: An exhaust treatment system includes an exhaust conduit for conveying exhaust gases from an engine of a vehicle. An aftertreatment device is disposed in the exhaust conduit. A flow device is disposed upstream of the aftertreatment device. The flow device includes a base having a first surface and an oppositely disposed second surface. The base defines a plurality of openings. A plurality of flow deflectors is engaged to the base at the plurality of openings. Each flow deflector includes a first deflector that extends outwardly from the first surface of the base and a second deflector that extends outwardly from the second surface of the base. The first and second deflectors define a passage. Flow of exhaust gases through the passage cause exhaust gases to swirl about a longitudinal axis of the exhaust conduit.

Abstract: An engine control apparatus includes a hydraulic pump driven by an engine, a hydraulic actuator to which pressure oil discharged form the hydraulic pump is supplied, an operation lever configured to operate the hydraulic actuators, a detection means detecting operation amounts of operation lever means, an target flow rate calculation unit (50) calculating an target flow rate of the hydraulic pump based on the operation amount of the operation lever, a first target speed calculation unit (61) calculating a first target speed of the engine according to the target flow rate, a pump output limit value calculation unit (500) limiting the maximum target speed of the engine in an relief operation according to a load pressure of the hydraulic pump, a fourth engine target speed calculation unit (63).

Abstract: A hydraulic control system for a transmission includes a source of pressurized hydraulic fluid that communicates with an electronic transmission range selection (ETRS) subsystem. The ETRS subsystem includes an ETRS valve, a park mechanism, first and second mode valve assemblies, a latch valve assembly, and a plurality of solenoids. The ETRS subsystem is configured to provide desired operating conditions during a plurality of potential failure conditions.

Abstract: The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor/pump, coupled to a combination electric generator/motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.

Abstract: Apparatus (100) comprising a power plant or air motor utilizing compressed air or liquid air for energy storage. The apparatus includes an electrical plant (200), a mechanical plant (300), and a pneumatic plant (400). When operating as a compressor, the plant receives electrical and/or direct mechanical power as an input to drive the plant, compress air, and store its output in the form of compressed or liquefied air. When operating as an engine, the plant consumes the compressed or liquid air to drive a mechanism of the engine and deliver mechanical power and/or electrical power as an output.

Abstract: A method for improving operation of a turbocharged engine is presented. In one embodiment, the method may reduce engine emissions and improve engine efficiency during an engine start.

Abstract: The present invention is applied to an internal combustion engine comprising a first supercharger 61, a second supercharger 62, a first control valve 66 for varying an amount of an exhaust gas supplied to the first supercharger, a second control valve 64 for varying an amount of an air supplied to the first supercharger, and provides an apparatus for determining an abnormality of a control valve which can determine at least whether or not the second control valve is abnormal. The apparatus for determining an abnormality of a control valve provides, to the first control valve, an instruction to change an opening degree of the first control valve in a predetermined operating state.

Abstract: A turbocharger comprises a variable nozzle device and an exhaust housing being mechanically and/or thermally decoupled from the variable nozzle device. Additional optional advantageous features are provided, including various axial and radial clearances and various sealing elements.

Abstract: In a case of a refrigerant amount being short when a Rankine cycle starts operating, because the pressure difference does not occur across a refrigerant pump, refrigerant cannot be injected from a bypass circuit to the Rankine cycle, and therefore super-cooling degree cannot be controlled. An exhaust heat recovery system is provided that can adjust the super-cooling degree even in the case of the pressure difference not occurring across the refrigerant pump. The system includes a refrigerant tank, for storing refrigerant, which is connected by pipes to the low-pressure circuit side and the high-pressure circuit side of the Rankine cycle through a low-pressure-side valve and a high-pressure-side valve, respectively, and a temperature adjuster for adjusting internal temperature of the refrigerant tank.

Abstract: A method of using geothermal energy to produce electricity by lowering a geothermal generator deep into a pre-drilled well bore below the Earth's surface. A self contained geothermal generator includes a boiler, a turbine compartment, an electricity generator, a condenser and an electric cable. The condenser includes a distributor chamber, a peripheral chamber and plurality of tubes disposed within the peripheral chamber. The peripheral chamber of the condenser surrounds the turbine, electric generator and distributor chamber departments and is cooled with a separate closed loop system. The condenser cools and converts exhausted steam back in liquid state and returns it back into the boiler for reheating. Water contained within the boiler is converted to high-pressure, super heated steam due to heat from hot rocks contained within a pre-drilled well bore. The steam is used to produce electric energy which is transported up to the ground surface by the electric cable.

Abstract: A turbine for converting thermal energy into mechanical work. The turbine includes a heating system, wherein the heating system is adapted for heating the turbine in a power off state and/or a start-up phase of the turbine. The heating system may include an electrical heating device and/or a steam heating device.

Abstract: Disclosed herein are combustion systems, power plants, and flue gas treatment systems that incorporate sweep-based membrane separation units to remove carbon dioxide from combustion gases. In its most basic embodiment, the invention is a combustion system that includes three discrete units: a combustion unit, a carbon dioxide capture unit, and a sweep-based membrane separation unit. In a preferred embodiment, the invention is a power plant including a combustion unit, a power generation system, a carbon dioxide capture unit, and a sweep-based membrane separation unit. In yet another embodiment, the invention is a flue gas treatment system that incorporates three membrane separation units with a carbon dioxide liquefaction unit.

Abstract: A fluid machine which can be compact and produced at reduced costs and which can increase the amount of heat added to a refrigerant circulating in a Rankine cycle and thus greatly increase the efficiency of the Rankine cycle. A fluid machine (1) comprising a pump mechanism (46) incorporated in a Rankine cycle to force a working fluid to circulate in the Rankin cycle to recover waste heat from a heat source, and an expansion mechanism (48) rotationally driven by expansion of the working fluid having been forced out by the pump mechanism (46) and then superheated, the pump mechanism and the expansion mechanism being linked by a shared drive shaft (50), wherein a pump mechanism exit section (76a) through which the refrigerant flows out of the pump mechanism (46) and an expansion mechanism exit section (76b) through which the refrigerant flows out of the expansion mechanism (48) are open outward in the same direction.

Abstract: The invention relates to a steam circuit process device, comprising a reservoir for a liquid working medium; an evaporator in which the working medium is evaporated by heat supply, the vaporous working medium being fed to an expander for expansion and for carrying out mechanical work and being subsequently liquefied in a capacitor which communicates with the reservoir; a working medium pump for supplying working medium from the reservoir to the evaporator. The invention is characterized in that liquid working medium is supplied in the direction of flow of the working medium upstream or in the region of the capacitor to the working medium exiting the expander.

Abstract: Contemplated power plants and LNG regasification facilities employ a combination of ambient air and non-ambient air as continuous heat sources to regasify LNG and to optimize power production. Most preferably, contemplated plants and methods are operable without the need for supplemental heat sources under varying temperature conditions.

Abstract: 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.

Abstract: Disclosed is a steam power cycle device wherein a part of a working fluid in a high-temperature liquid phase separated from a gas phase by a gas-liquid separator is mixed with a working fluid in a high-temperature gas phase extracted from an expansion machine, and is heat-exchanged with a working fluid in a low-temperature liquid phase discharged from a condenser, so that the heat stored in the working fluid can be efficiently recovered, and the heat efficiency of an entire cycle can be improved.

Abstract: A steam power plant is provided. The steam power plant includes a bypass pipeline which connects the fresh steam line flow to the exhaust steam line, wherein a bypass steam cooler is disposed in the bypass pipeline. In the event of an emergency stop, or a startup, or a shutdown, the bypass steam cooler cools the steam flowing into the bypass pipeline, whereby cheaper materials may be used for the bypass pipeline.

Abstract: A combustor assembly for a turbine engine includes a fuel nozzle located at an upstream end of the combustor assembly. The fuel nozzle includes both a fuel delivery passageway and a purge air passageway. The purge air passageway conveys a flow of purge air to cool the fuel nozzle. The combustor assembly also includes a combustion product return line that conveys a flow of combustion products from a position downstream of a combustion zone of the combustor back to the fuel nozzle. The combustion products are mixed with purge air, and the mixture is delivered into a combustion zone located just downstream of the fuel nozzle. The addition of the combustion products into the purge air reduces the amount of oxygen in mixed flow, which helps to reduce the generation of undesirable nitrogen oxide combustion byproducts. Also, the greater heat of the combustion products helps to increase the temperature of the mixture, which helps to maintain the stability of a pilot flame fed by the mixture.