Abstract: Provided herein are heat engine systems and methods for starting such systems and generating electricity while avoiding damage to one or more system components. A provided heat engine system maintains a working fluid (e.g., sc-CO2) within the low pressure side of a working fluid circuit in a liquid-type state, such as a supercritical state, during a startup procedure. Additionally, a bypass system is provided for routing the working fluid around one or more heat exchangers during startup to avoid overheating of system components.

Abstract: A torsional pulse dampener including a pulley rotationally coupled to a piston that is axially displaceable and adapted to give torsional compliance from an engine for at least one-half revolution of an angular differential displacement between the pulley and the piston.

Abstract: A turbomachine casing assembly including a casing adapted to encase an aerofoil structure, the aerofoil structure having a tip, a leading edge and a trailing edge, the casing substantially surrounding the tip of the aerofoil structure, wherein the casing has a set-back portion extending from a position in the region of the leading edge or the trailing edge of the aerofoil structure part way towards a position in the region of the respective other edge and set back from the remainder of the casing away from the aerofoil structure, such that the set-back portion permits a flow over a corresponding portion of the tip of the aerofoil structure.

Abstract: A power generation apparatus according to the present invention includes: an expander; a generator that includes a generator rotor driven by the expander and a stator disposed outside the generator rotor in the radial direction; and a casing that includes an expander chamber accommodating the expander and a generator chamber accommodating the generator. The casing includes a first communication portion that causes an expansion chamber which gradually expands a working medium by the expander in the expander chamber to communicate with a front generator portion which is located nearer the expansion chamber than the generator in the generator chamber and a second communication portion that causes a portion which is a downstream portion from the expansion chamber and is located near the expansion chamber with respect to the generator to communicate with the front generator portion.

Abstract: A solar heat boiler is provided which is capable of avoiding damage to heat transfer tubes without increasing facility cost and construction cost. The solar heat boiler includes: a low-temperature heating device by which water supplied from a water supply pump is heated by heat of sunlight; a steam-water separation device by which two-phase fluid of water and steam generated in the low-temperature heating device is separated into water and steam; a high-temperature heating device by which the steam separated by the steam-water separation device is heated by the heat of sunlight; and a circulation pump by which the water separated by the steam-water separation device is supplied to the low-temperature heating device.

Abstract: Methods and systems are provided for adjusting intake airflow through two parallel induction passages. In response to increased torque demand, intake airflow may be directed through a first induction passage including an exhaust-driven turbocharger compressor and through a second induction passage including an electric compressor. Further, after the turbocharger compressor increases speed, intake airflow may be directed again through the first induction passage to further increase boost.

Abstract: A pollutant collecting pump for water surface comprises a power device (1) and a pollutant collecting barrel (6). The power device (1) is connected to the pollutant collecting barrel (6). A pollutant inlet (4) is provided on the upper portion of the pollutant collecting barrel (6), and a pollutant outlet (5) is provided on the lower portion of the pollutant collecting barrel (6). A blade (2) is provided outside the pollutant collecting barrel (6), and an axis of the pollutant collecting barrel (6) is perpendicular to a rotating surface of the blade (2). The pollutant inlet (4) is positioned above the blade (2). The pollutant collecting pump for water surface is adapted to collect pollutants distributed on water surface with low density and small thickness, and has the advantages in simple structure, low manufacturing cost, convenient operation and thorough collection.

Abstract: A transmission system for an adjusting device, of a waste gate of an exhaust gas turbocharger, including a four bar coupling mechanism, a driver arm operatively connected to a drive via a transmission, an output arm and a coupler, operatively connecting the driver and output arms, the transmission having a driving gear, assigned to the drive, and a driven gear, assigned to the driver arm and interacting with the driving gear having a rolling curve radius, which changes over the circumference, the driven gear having a rolling curve radius running complementary to the former. The rolling curve radii is selected in an angle of rotation range about the extended position of the coupling to form at least in regions a first transmission ratio and outside the angle of rotation range to form at least a second transmission ratio larger than the first ratio. Also described is an exhaust gas turbocharger.

Abstract: A butterfly valve includes a body with a bore through which exhaust gas may flow and a valve member rotatably mounted within the bore for restricting flow through the bore. A stop extends into the bore to limit movement of the valve member and prevent the valve member from rotating to a closed position. The stop defines a restricted flow position at which the valve member is positioned between an open position and the closed position. An internal combustion engine utilizing the butterfly valve is also provided.

Abstract: The invention relates to a warming arrangement having a warming system for warming a steam turbine. The warming system has a makeup line and recycle line fluidly connected to the steam turbine. A gas moving device and a heater are located in either of these two lines. The warming system further includes a pressure measurement device that is configured and arranged to determine a gauge pressure in the steam turbine as well as a controller. The controller is configured to control a flow rate of the warming gas through the steam turbine, based on the pressure measurement device.

Abstract: In a scroll structure of a centrifugal compressor, there are provided a radius increase arc portion E in which a radius from the center of a scroll 12 to a scroll centroid P of the cross section of the scroll 12 is gradually increased in any range in a circumferential direction from the start of winding of the scroll, and a radius decrease arc portion F in which the radius is gradually decreased toward a scroll end point Z.

Abstract: The invention relates to a method for detecting icing and other loadings on blades of wind turbines. Advantageously, the method utilizes existing wind turbine actuators, for example pitch actuators, far excitation of blade vibrations. Vibration sensors on the blade such as strain sensors or accelerometers measure the blade vibrations excited in response to the actively excised vibrations. By comparing the measured response with previously obtained reference responses, it is possible to determine if blade icing is present.

Abstract: The invention provides a wind turbine blade comprising a first shell, having a first bonding region, and a second shell having a second bonding region, wherein the second bonding region of the second shell is bonded to the first bonding region of the first shell; and a temperature sensor positioned between the first bonding region and the second bonding region. Having a temperature sensor positioned within the turbine blade, in the region at which the two shells of the turbine blade are bonded together, allows for accurate determination and control of the temperature of the critical bonding regions during blade manufacture. The temperature sensor may be used during the service life of the wind turbine blade to detect delamination of the wind turbine blade.

Abstract: A vane carrier temperature control system for use in a gas turbine engine includes a first cooling air source, a second cooling air source, and an air temperature control system. The first cooling air source supplies a first portion of vane carrier cooling air extracted from a compressor section of the engine to a first section of a vane carrier that supports a plurality of rows of vanes within a turbine section of the engine. The second cooling air source supplies a second portion of vane carrier cooling air extracted from the compressor section to a second section of the vane carrier spaced from the first section in an axial direction defined by a direction of hot working gas flow through the turbine section. The air temperature control system controls a temperature of at least one of the first and second portions of vane carrier cooling air.

Abstract: A dual compressor turbocharger includes two compressors. One compressor supplies fuel pressure, and one compressor supplies air pressure. The dual compressor turbocharger includes a turbine driven by exhaust of an engine and a shaft coupled to the turbine. The first compressor is mounted on the shaft and includes a first inlet coupled to an air supply and a first outlet coupled to an air intake of the engine. The second compressor is mounted on the shaft and includes a second inlet coupled to a fuel supply and a second outlet coupled to a fuel supply rail of the engine.

Abstract: A dual cycle system for generating shaft power using a supercritical fluid and a fossil fuel. The first cycle is an open, air breathing Brayton cycle. The second cycle is a closed, supercritical fluid Brayton cycle. After compression of air in the first cycle, the compressed air flows through a first cross cycle heat exchanger through which the supercritical fluid from the second cycle flows after it has been compressed and then expanded in a turbine. In the first cross cycle heat exchanger, the compressed air is heated and the expanded supercritical fluid is cooled. Prior to expansion in a turbine, the compressed supercritical fluid flows through a second cross cycle heat exchanger through which also flows combustion gas, produced by burning a fossil fuel in the compressed air in the first cycle. In the second cross cycle heat exchanger, the combustion gas is cooled and the compressed supercritical fluid is heated.

Abstract: Provided is a power generating apparatus including an evaporator configured to evaporate a working medium with a heating medium supplied from the outside of a working medium flow path, an expander to which a driven machine is connected and which is configured to convert expansion force of the evaporated working medium into rotational force to drive the driven machine, a condensing mechanism configured to condense the working medium discharged from the expander with a cooling medium supplied from the outside of the working medium flow path, the condensing mechanism having at least one heat exchanger pipe through which the working medium flows, a cooling water sprayer configured to spray cooling water as the cooling medium over the surface of one or a plurality of heat exchanger pipes of the at least one heat exchanger pipe, and a cooling fan configured to blow ambient air over the one or a plurality of heat exchanger pipes to evaporate cooling water attached to the surface of the one or a plurality of heat exc

Abstract: A control method for a turbocharger system may include a first intake line supplying outdoor air to an intake manifold, a turbocharger, a second intake line supplying fresh air to the compressor; a third intake line connecting the compressor and the first intake line; a throttle valve controlling a flow of air supplied from the first intake line and the third intake line; an intake bypass valve controlling a flow of air that flows in the first intake line; a first exhaust line; a second exhaust line; an exhaust bypass valve controlling a flow of the exhaust gas discharged from the first exhaust line; and a controller controlling opening levels of the intake bypass valve, the exhaust bypass valve, and the throttle valve according to a driving condition of a vehicle.

Abstract: A rotary machine with a deformable rhomb, includes a housing defining a stator for receiving a rotor which is a deformable rhomb in contact, with or without clearance, with the internal surface of the housing, the deformable rhomb including several pistons connected one after the other by a pivotal hinge having an axis parallel to the longitudinal axis of the housing and thus defining a closed chain; the internal surface of the housing of the machine defining an external cavity, with the exterior of the deformable rhomb, and with the lateral closure flanges of the housing, and an inner cavity being formed in the interior of the rotor with the lateral closure flanges of the housing; at least one of the external cavities and/or at least one of the inner cavities being connected, directly or indirectly, to the inlet of a fluid circuit external to the machine.

Abstract: The invention provides a method and system of detecting ice or other foreign matter on a wind turbine blade or damage to a wind turbine blade. The method in one aspect comprises: measuring twisting torque on the blade about its longitudinal axis to provide a detected torque signal; comparing a value based on the detected torque signal with a comparison value, the comparison value derived from one or more measured parameters having a predetermined relationship with the twisting torque about the longitudinal axis of the blade when the blade is operating under normal operating conditions; and determining that ice or other foreign matter is on the blade or that the blade is damaged if the value based on the detected torque signal differs from the comparison value by more than a predetermined amount. Wind turbine blades are designed such that any change in the shape of the blade reduces twisting torque on the blades significantly.