Abstract: A rope structure has a plurality of link structures each defining first and second ends and at least one organizer member. Each first end comprises at least first and second bend portions, and each second end comprises at least third and fourth bend portions. The first end of a first one of the plurality of link structures and the second end of a second one of the plurality of link structures engages the at least one organizer member such that the first and second bend portions of the first end of the first one of the plurality of link structures are substantially parallel to each other and substantially perpendicular to the third and fourth bend portions of the second end of the second one of the plurality of link structures.

Abstract: A low-concentration methane gas oxidation system is provided which effectively uses exhaust heat from a gas turbine engine and is able to avoid burnout of a catalyst etc. to enable stable operation even when a methane concentration in a low-concentration methane gas which is a treatment target is rapidly increased. In a low-concentration methane gas oxidation system which oxidizes a low-concentration methane gas by using exhaust heat from a gas turbine engine, a supply source of the low-concentration methane gas which is an oxidation treatment target, a catalyst layer configured to oxidize the low-concentration methane gas by catalytic combustion, and an intake damper connected to a supply passage through which the low-concentration methane gas is supplied from the supply source to the catalyst layer and configured to introduce an air from an outside into the supply passage, are provided.

Abstract: In one aspect, a gasification system for use with low rank fuel is provided. The system includes a first gasifier positioned to receive a feed of low rank fuel, the first gasifier being configured to gasify the low rank fuel to produce hydrocarbons and fixed carbon. The system also includes a second gasifier configured to produce a syngas stream using the received fixed carbon, a cooler configured to receive and cool the syngas stream, and a first conduit coupled between the cooler and the first gasifier. The first conduit is configured to recycle at least a portion of the syngas stream to the first gasifier to facilitate heating low rank fuel within the first gasifier. The recycled syngas stream is mixed with the hydrocarbons to produce a hydrocarbon-rich syngas stream. The system also includes a second conduit coupled to the first gasifier for receiving the hydrocarbon-rich syngas stream.

Abstract: An axial-flow turbine according to an embodiment includes a plurality of nozzle structures and a plurality of blade structures. At least one nozzle structure includes an outer ring diaphragm and an inner ring diaphragm. The outer ring diaphragm and the inner ring diaphragm form an annular opening portion which extends in a circumferential direction therebetween. A nozzle is provided in a portion of a region of the annular opening portion in the circumferential direction, and a closing part is provided in another portion of the region of the annular opening portion in the circumferential direction. The closing part closes this other portion of the region to prevent a working fluid from flowing into this other portion of the region. A closing part medium passage is provided in the closing part and is configured to flow a cooling medium which cools the closing part.

Abstract: A gas turbine engine is disclosed with a first spool having a first turbine connected to a first compressor through a first rotatable shaft; a second spool having a second turbine connected to a second compressor through a second rotatable shaft; and a gearbox having a power input port coupled to each of the first and second shafts and a power output port connected to a third shaft, wherein the rotational speed of the third shaft is lower than the rotational speed of each of the first and second shafts.

Abstract: An aircraft power plant is disclosed having a plurality of bladed rotors in flow communication driven by separate work producing devices. The work producing devices can take a variety of forms including an internal combustion engine and electric motor, for example. The bladed rotors can be associated with an aircraft pylon and can be driven independently to separate operating conditions to provide optimum performance. For example, the bladed rotors can be driven to separate operating conditions that improve a noise signature or performance of the aircraft.

Abstract: A gas turbine engine has a propulsor including a fan and a power turbine, an engine core aerodynamically connected to the propulsor by a transition duct, and a bypass valve in the transition duct that allows for air from the engine core to bypass the power turbine.

Abstract: In one embodiment, a gas turbine engine for mounting to a rear of an aircraft fuselage has a propulsor that rotates on a first axis, and an engine core including a compressor section, a combustor section, and a turbine section, with the turbine section being closer to the propulsor than the compressor section. The engine core is aerodynamically connected to the propulsor and has a second axis. A nacelle is positioned around the propulsor and engine core. The nacelle is attached to the wing of the aircraft. A downstream end of the nacelle has at least one pivoting door with an actuation mechanism to pivot the door between a stowed position and a vertical deployed position in which the door inhibits a flow to provide a thrust reverse of the flow.

Abstract: A system for preventing the cleaning of the diesel particulate filter (116) comprises an electronic control unit (200) coupled to a proximity sensor (122), the electronic control unit (200) being configured to monitor the proximity sensor (122) and to determine that there is a predetermined distance between the proximity sensor and an adjacent structure (124) before the electronic control unit (200) will regenerate the diesel particulate filter (116). A method for preventing the cleaning of the diesel particulate filter (116) comprises the steps of electronically monitoring a proximity sensor to determine a distance from the proximity sensor to an adjacent structure, electronically comparing the distance to a threshold distance, and electronically preventing the cleaning of the diesel particulate filter (116) when the distances less than the threshold distance.

Abstract: A method for protecting an exhaust aftertreatment system of an internal combustion engine from deterioration by selectively diverting exhaust gasses from the engine away from a component of the exhaust aftertreatment system includes assessing a status of an operating condition associated with a physical condition of the component of the internal combustion engine. The status of the operating condition is compared with a threshold value that corresponds with deterioration of the physical condition of the component. A valve upstream of the component is moved to a first position to open a bypass fluid path directing exhaust gasses around the component when the status of the operating condition meets the threshold value to reduce deterioration of the component. The valve is moved to a second position to close the bypass fluid path thereby directing exhaust gasses to the component when the status of the operating condition does not meet the threshold.

Abstract: Systems and methods for generating and controlling generation of ammonia. The ammonia generation control system includes a communication module and an ammonia generation module coupled to the communication module. The ammonia generation module is configured to cause generation of gaseous ammonia from a solid ammonia source in response to a determination that an ammonia storage quantity in an ammonia dosing storage cartridge meets a first pre-determined threshold and a determination that an engine condition of an internal combustion engine coupled to ammonia dosing storage cartridge meets a pre-determined engine condition threshold.

Abstract: Provided is an exhaust gas treatment catalyst including: a de-NOx catalyst; and a coating layer being provided on a surface of the de-NOx catalyst and containing at least one selected from the group consisting of alkali metal carbonates and alkaline earth metal carbonates. In a method for regenerating an exhaust gas treatment catalyst of the present invention, the coating layer of the de-NOx catalyst on which VOSO4 is deposited is removed with an acid, and after the removal of the coating layer, a coating layer containing at least one selected from the group consisting of alkali metal carbonates and alkaline earth metal carbonates is again provided.

Abstract: A carbon buildup removal device with protection function of vibration detection is provided for electrically connecting to an engine from which carbon buildup is to be removed. The carbon buildup removal device includes a gas output unit and a vibration detection unit. The gas output unit outputs a gas that is supplied to the engine. The vibration detection unit includes a vibration detector that detects vibration of the automobile and a controller that is electrically connected to the vibration detector and the gas output unit. By using the vibration detector in combination with the controller, when the engine stops operating or is operating abnormally, power supplied to the gas output unit is cut off so as to prevent excessive accumulation of gas and thus back fire or excessive pressure to thereby improve stability and safety of carbon buildup removal operation of the engine.

Abstract: Fuel in a fuel tank is supplied by a low-pressure pump to intake passage injectors mounted on an intake manifold via a low-pressure fuel supply pipe and a low-pressure fuel distribution pipe. A high-pressure pump is provided on the low-pressure fuel supply pipe. The pressure of the fuel is boosted by the high-pressure pump, and then is supplied to in-cylinder injectors via a high-pressure fuel distribution pipe. In an intake passage injection (MPI) mode, excitation of a solenoid is stopped and operation of an electromagnetic spill valve is stopped so as reduce vibration and noise caused by the seating of the electromagnetic spill valve in a valve seat.

Abstract: An exhaust treatment unit treats exhaust gas from an engine of a work vehicle. The exhaust treatment unit includes a diesel particulate filter device, a selective catalytic reduction device, a first support component and a second support component. The diesel particulate filter device treats the exhaust gas. The selective catalytic reduction device treats the exhaust gas. The first support component supports the diesel particulate filter device. The second support component supports the selective catalytic reduction device and the first support component. The first support component is detachable from the second support component.

Abstract: An exhaust gas purification device for a general-purpose engine includes a crankcase and a cylinder block provided continuously on an upper portion of the crankcase and inclined to one lateral side of the crankcase. A catalytic converter is provided in an exhaust muffler of the engine. A downstream end of a secondary air introduction pipe is connected to an exhaust pipe upstream of the muffler. A dedicated air filter is connected through a one-way valve to an upstream side of the secondary air introduction pipe. The filter is disposed between the crankcase and a lower surface of the cylinder block. The secondary air introduction pipe is arranged so as to meander on one side of the cylinder block. Accordingly, the device can be employed without increasing an outer size of the engine, and can also securely introduce secondary air into an exhaust system, thereby enhancing an exhaust gas purifying effect.

Abstract: An exhaust gas purifying catalyst comprises: a plurality of catalyst units which contain anchor particles that support noble metal particles; and an enclosure material that internally contains the plurality of catalyst units and separates the catalyst units from each other. Both the anchor particles and the enclosure material contain an alkali element and/or an alkaline earth element. Due to this configuration, this exhaust gas purifying catalyst is capable of maintaining the exhaust gas purification performance by suppressing agglomeration of the noble metal particles even in cases where the ambient temperature is high.

Abstract: A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.

Abstract: An exhaust device includes a plurality of independent exhaust passages connected to an exhaust port of one cylinder or a plurality of cylinders that are non-sequential in exhaust order, and a mixing pipe into which exhaust that has passed through the respective independent exhaust passages flows. The downstream ends of the respective independent exhaust passages are connected in a bundled form to the upstream end of the mixing pipe. A cavity expansion chamber is disposed in an exhaust passage downstream from the mixing pipe. The cavity expansion chamber is disposed in a position (at a distance L2) such that, in the intermediate speed range, a negative pressure wave generated due to an exhaust pressure wave generated by opening an exhaust valve being reflected by the cavity expansion chamber reaches the exhaust port during an overlap period of the exhaust valve and an intake valve of the cylinder.

Abstract: The systems, methods and apparatuses described herein provide a footwear hydraulic system for harvesting power generated by pressing a foot on a surface and providing a cushion for the impact. In certain aspects, a hydraulic system for a footwear may comprise at least one chamber with a first and second compartments separated by an elastic membrane. The first compartment may be filled with gas and the second compartment may be filled with liquid. The gas may provide impact cushion and transient energy storage, and the liquid may pressured to push a generator to produce energy. The pressure may be generated by pressing the footwear on a surface and/or the elastic membrane of the chamber trying to restore its shape.

Abstract: The present invention relates to an engine that runs on natural air pressure, more particularly to a method and apparatus for operating a vehicle engine on natural air pressure in order to alleviate problem of pollution. The present invention provide a reliable method and apparatus for operating an engine with a natural air with appropriate pressure which is effective to deliver a constantly increasing amount of natural air to an engine as the speed of the engine increases which is readily adaptable to a standard internal combustion engine to convert the internal combustion engine for operation with a natural air.

Abstract: A hydraulic suspension system includes a suspension cylinder, a pump, and a control valve therebetween. The control valve includes a spool reciprocally movable between a pump flow position and a tank flow position in which a control port of the control valve is in communication with a pump and a tank, respectively. A piloted logic element in fluid communication with and interposed between the control valve and the suspension cylinder is selectively movable between a through-flow position in which fluid can flow in either direction between a chamber of the suspension cylinder and the control port of the control valve and a blocked position in which fluid is prevented from flowing in or out of the chamber of the suspension cylinder. The logic element is biased to the blocking position, moving to the through-flow position when subjected to a crack pressure delivered from the control port of the control valve.

Abstract: An actuator having efficient energy accumulation with plurality of varying diameter compression springs, pre-compressed with individual or with collective telescopic arrangement. The energy accumulation system requires lesser accommodating volume and is advantageous due to being “buckle” free.

Abstract: The WGLPP is a non-fluvial/dam, complete micro Hydroelectric Power Plant that can be an attached/integrated installation, a non-attached installation, or a portable installation (vehicle) that will continuously (24/7) power any residential, commercial, or military building. The WGLPP is driven by a water gravity energy loop (potential energy to kinetic energy to potential energy. . . ), which is clean (zero emissions and zero environmental impact) and renewable energy.

Abstract: Systems, methods and devices for optimizing heat transfer within a device or system used to compress and/or expand a gas, such as air, are described herein. In some embodiments, a compressed air device and/or system can include an actuator such as a hydraulic actuator that can be used to compress a gas within a pressure vessel. An actuator can be actuated to move a liquid into a pressure vessel such that the liquid compresses gas within the pressure vessel. In such a compressor/expander device or system, during the compression and/or expansion process, heat can be transferred to the liquid used to compress the air. The compressor/expander device or system can include a liquid purge system that can be used to remove at least a portion of the liquid to which the heat energy has been transferred such that the liquid can be cooled and then recycled within the system.

Abstract: This invention provides an actuator which is easy to control the drive and has large generative force. The actuator is an actuator having a cylindrical outer frame body which expands in the side surface direction to bring the bottom portion and the top portion close to each other and a deformation unit which is accommodated in the outer frame body and has a plurality of deformation elements which are deformed by applying a voltage, in which, in the deformation unit, the plurality of deformation elements are mutually deformed when a voltage is applied to press and expand the outer frame body in the side surface direction.

Abstract: A hydraulic brake booster includes: a piston housing; and a first piston and a second piston displaceably spaced apart from each other inside the piston housing in a longitudinal direction and sealed from an inner wall of the piston housing, the first piston being fixedly coupled to a pressure piston rod so that in an actuation the first piston exerts a fluid pressure on a first volume by way of one surface, and the second piston exerts the fluid pressure on a second volume by way of one surface. In the case of a failure of the brake booster, the first volume is connected with a variable volume situated between an annular surface of the first piston and an inner surface of the piston housing, so that when the pressure piston rod is actuated, a pressure equilibrium forms between the first volume and the variable volume.

Abstract: A vehicle brake system includes a cylinder, a master piston including a pressure applying piston and a projection portion, a servo chamber, a contact/separation determining means determining a separated state and a contact state between the input piston and the master piston, a pilot pressure generating device generating a pilot pressure, a servo pressure generating device, a servo pressure measuring device measuring a servo pressure, and a master pressure estimating means estimating a master pressure from the pilot pressure and a first servo ratio, which is a cross-sectional area ratio between a first pilot chamber and a servo pressure generating chamber, in a case of the separated state, and estimating the master pressure based on the servo pressure, the pilot pressure and a second servo ratio, which is a cross-sectional area ratio between a second pilot chamber and the servo pressure generating chamber, in a case of the contact state.

Abstract: A control device of the invention is applied to an engine including a supercharger and a mechanism to allow area of an opening of a passage space to be variable, which space is to pass through exhaust gas guided to the supercharger. The control device changes the above area and a fuel supply amount to a combustion chamber based on a first degree of change in torque and a second degree of change in torque. The first degree is due to a change in an intake air amount to the combustion chamber to be occurred along with the change in the above area, and the second degree is due to a change in pressure of the exhaust gas to be occurred along with the change in the above area.

Abstract: Systems and methods for implementing the systems includes aeroderivative gas turbine subsystem and an energy extraction subsystem extracting energy from an exhaust of the aeroderivative gas turbine subsystem, where the energy extraction subsystem includes a heat exchange subsystem, a dual pressure turbine subsystem, and a condensation-thermal compression subsystem and where an intercooler portion of the heat recovery and vapor generator subsystem permits a working fluid flow rate to be increased to relative to a flow of the exhaust stream resulting in a bottoming cycle gross output increase of at least 23% relative a dual pressure Rankine cycle bottoming cycle, a bottoming cycle net output increase of at least 25% relative a dual pressure Rankine cycle bottoming cycle, a combined cycle net output increase of at least 5.5% relative a dual pressure Rankine cycle bottoming cycle, and a combined cycle efficiency increase to at least 54% relative to 51.1% for a dual pressure Rankine cycle bottoming cycle.

Abstract: The Rankine cycle (31) includes a refrigerant pump (32), a heat exchanger (36), an expander (37), and a condenser (38). The Rankine cycle (31) shares the condenser (38) and refrigerant with a refrigerant cycle of an air-conditioner. A refrigerant passage connecting to an outlet of the condenser (38) branches at a refrigeration cycle branch point (45) to connect to the refrigerant pump (32) and an evaporator (55). In the case of operating the Rankine cycle, without a request to operate the air-conditioner, the compressor (52) in the refrigeration cycle is driven.

Abstract: A power generation system using low-grade coal includes a low-grade coal refining facility that heats the low-grade coal to refine the low-grade coal into high-grade coal, a CO2 recovery facility that recovers CO2 from an exhaust gas generated by refining the low-grade coal in the low-grade coal refining facility, while using steam generated by refining the low-grade coal in the low-grade coal refining facility, and a power generation facility that performs the power generation using, as fuel, the high-grade coal obtained by refining the low-grade coal in the low-grade coal refining facility.

Abstract: A heat exchanger includes an enclosure having a separator disposed therein that divides the heat exchanger into a mixing area and a heat exchange area. The mixing area is configured to receive a hot fume and droplets of a liquid for mixing with each other to form a fume-droplet vapor mixture. The mixture is configured to flow through orifices of the separator into the heat exchange area. A plurality of magazines is disposed within the heat exchange area of the first enclosure. Each magazine defines a cavity. The cavities are disposed in communication with one another. A lower-most magazine is configured to receive a receiver medium that is pumped through the cavity of each successive magazine to an upper-most magazine. The mixture is configured to circulate about the magazines to incrementally heat the receiver medium as the receiver medium is pumped through the cavity of each successive magazine.

Abstract: A Rankine cycle includes a refrigerant pump, a heat exchanger, an expander and a condenser. The Rankine cycle further includes a clutch provided in a power transmission path extending from an engine to the refrigerant pump. Prior to the operation of the Rankine cycle and during the deceleration of the vehicle, the clutch is fastened and the refrigerant pump is driven with use of the vehicle inertia force.

Abstract: Disclosed are an air cooled condenser capable of preventing air from being mixed into a working medium flow path, and a power generating apparatus including the air cooled condenser. The air cooled condenser includes a heat exchanger for air-cooling a working medium indirectly through a wall, a fan, a sensor for measuring a pressure value of the working medium at an outlet of the heat exchanger, and a controller for controlling the rotating speed of the fan such that the pressure value obtained by the sensor comes closer to a target value set to be equal to or larger than an atmospheric pressure.

Abstract: An engine for propelling vehicles on land, in the air and on the water. The engine is able to extract energy from a same fuel twice, including extracting a first amount of energy with a gas turbine and a second amount of energy by burning the fuel in a combustion engine.

Abstract: A lean fuel intake gas turbine which uses, as a working gas, a mixed gas having a concentration equal to or lower than a flammability limiting concentration and obtained by mixing two types of fuel gases having different fuel concentrations, includes a first mixer configured to mix a second fuel gas having a higher fuel concentration with a first fuel gas having a lower fuel concentration, of the two types of the fuel gases having different fuel concentrations, to generate a first stage mixed gas and a second mixer configured to further mix the second fuel gas with the first stage mixed gas to generate a second stage mixed gas which is the working gas.

Abstract: A turbine comprising a first turbine component being of a first material having a first coefficient of thermal expansion. A second turbine component being of a second material having a second coefficient of thermal expansion, said second turbine component adjacent said first turbine component. A space between said first and second turbine components. A seal assembly sealing said space, wherein at least a portion of said seal assembly has a coefficient of thermal expansion substantially similar to at least one of said first or second turbine components to thereby maintain a seal in said space during thermal expansion or contraction of said first and second turbine components.

Abstract: A gas turbine engine includes a combustor having a dual-wall impingement convention effusion combustor tile assembly. The dual-wall tile assembly provides a cooling air flow channel and attachments for securing the tile to the cold skin liner of the combustor. Cooling is more efficient in part due to the dual wall construction and in part due to reduced parasitic leakage, and the design is less sensitive to attachment features which operate at lower temperatures.

Abstract: A cooling air flow ejector has a primary nozzle position to entrain air from a secondary nozzle. Mixed air is provided into a downstream flow conduit to be directed to an exhaust liner for a gas turbine engine. A variable area device controls a volume of air passing through a primary nozzle. A control for the variable area device to control the size of an orifice within the variable area device controls the volume of air reaching the exhaust liner to be cooled.

Abstract: The build-up of carbon deposition on the front face of a combustor heat shield is discouraged by jetting air out from the front face of the heat shield with sufficient momentum to push approaching fuel droplets or rich fuel-air mixture way from the heat shield.

Abstract: An integrally bladed rotor for a gas turbine engine includes a hub, a plurality of blades radially extending from the hub and being integrally formed therewith. The hub having a rim from which the blades project and a pair of axially opposed split hub members extending at least radially inward from the rim. Each of the split hub members has a radially outer flex arm portion extending form the hub and a radially inner moment flange portion. At least one moment inducing element separately formed from the hub is mounted axially between the opposed split hub members and acts on the moment flange portions of the opposed split hub members to generate an inward bending moment on the flex arm portions of the opposed split hub members during rotation of the rotor, thereby deflecting the rim and the blades of the rotor radially inwardly.

Abstract: Bleed air systems for use with aircrafts and related methods are disclosed. An example apparatus includes a turbo-compressor including a compressor has a compressor inlet fluidly coupled to a low-pressure compressor of an aircraft engine and an intermediate port of a high-pressure compressor of the aircraft engine. The compressor inlet to receive fluid from either the low-pressure compressor or the high-pressure compressor based on a first system parameter of the aircraft. A turbine has a turbine inlet fluidly coupled to the intermediate port of the high pressure compressor and a high-pressure port of the high pressure compressor of the aircraft engine. The turbine inlet to receive fluid from either the intermediate port of the high-pressure compressor or the high-pressure port of the high-pressure compressor based on a second system parameter of the aircraft.

Abstract: An apparatus includes a gas turbine engine flow device having an inner member and a surrounding member. The inner member has a first coefficient of thermal expansion; and the surrounding member at least partially surrounds the inner member and has a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion. The surrounding member includes at least two walls that form a variable flow gap therebetween. The inner member is oriented relative to the at least two walls of the surrounding member such that, based on the difference in the first and second coefficients of thermal expansion, the inner member expands relatively greater than the surrounding member or the surrounding member expands relatively greater than the inner member, according to a temperature change to correspondingly enlarge or reduce the size of the variable flow gap between the at least two walls.

Abstract: The invention relates to a gas turbine power plant, having a gas turbine, a waste heat steam generator following the gas turbine, an exhaust gas recooler, an exhaust gas blower, a carbon dioxide separation plant which separates the carbon dioxide contained in the exhaust gases from these and discharges it to a carbon dioxide outlet. A bypass chimney is arranged in the gas turbine power plant between the outlet of the waste heat steam generator and the exhaust gas blower and is connected to a fail-safe open connection both in the throughflow direction from the exhaust gas line to the bypass chimney and in the throughflow direction from the bypass chimney to the exhaust gas line. The invention relates, further, to a method for operating a gas turbine power plant of this type, in which the exhaust gas blower is regulated.

Abstract: A method for starting-up a steam turbine of a combined-cycle power plant is provided. The combined-cycle power plant includes a gas turbine and a steam power generation system having a steam turbine. The combined-cycle power plant activates at least one electric generator connectable to an electric grid. The gas turbine includes a compressor, such that, during starting-up of the steam turbine, both the gas turbine and the steam turbine are in operation. The steam turbine adjusts its load as a function of the load of the gas turbine in such a way that the sum of the load provided by the gas turbine and of the load provided by the steam turbine is equal to the auxiliary power demand of the plant. The load exported to the grid is equal to zero.

Abstract: This invention relates to electrical power systems, including generating capacity of a gas turbine, and more specifically to augmentation of power output of gas turbine systems, that is useful for providing additional electrical power during periods of peak electrical power demand.

Abstract: One example of a gas turbine engine may include a gas generator, a reheat combustor that is disposed downstream of the gas generator, and a power turbine that is disposed downstream of the reheat combustor and includes a plurality of nozzle guide vanes. The reheat combustor is configured to increase a fuel flow so as to increase a temperature of the reheat combustor and match a required exhaust temperature. The nozzle guide vanes are configured to increase a real capacity at a power turbine inlet in proportion with the required exhaust temperature. A constant apparent capacity at a gas generator exit upstream of the reheat combustor remains constant, in response to proportionately increasing the temperature and the real capacity with respect to one another.

Abstract: One example of a gas turbine engine can include a first compressor and a first turbine connected to the first compressor by a first shaft. The engine can include a reheat combustor, which is disposed downstream of the first turbine, and a second turbine, which is disposed downstream of the reheat combustor. The engine can further include a second compressor, which is connected to the second turbine by a second shaft and is disposed upstream of the first compressor. The first and second turbines can be disconnected from one another, and the first and second compressors can be disconnected from one another. The second compressor may have an outlet including a flow to the first compressor, such that the first and second turbines provide a shaft worksplit. The reheat combustor can be configured to receive fuel and generate a reheat exit temperature, so as to control an apparent capacity of the second turbine based on a plurality of parameters of the second compressor.

Abstract: Method and apparatus for achieving high efficiency in an open gas-turbine process, in which a supercharger compresses air, which is burned together with a fuel in a first combustion chamber, which is followed by a first turbine, a second combustion chamber, a second turbine, and a preheating heat exchanger, in which primary bleed water vapor coming from the secondary process, or a mixture of the aforementioned water vapor and air coming from the supercharger are preheated. From the heat exchanger the combustion gases go to a waste-heat boiler, in which the secondary-process feed water is vaporized. The combustion gases are expanded in the second turbine to a pressure 0.5 bar lower than that of the surrounding atmospheric pressure. The remaining combustion gases are compressed by a combustion-gas supercharger to the surrounding atmospheric pressure.