Abstract: A heat exchanger including a primary tube including a first flat plate and a first shaped plate connected to each other to form a first fluid channel. The first flat plate and the first shaped plate include fluid openings to enable fluid flow to and from the primary tube.

Abstract: An attachment for a heat exchange plate, having an attachment base plate extending within a base plane, having a bottom side and a top side between which a thickness of the attachment base plate extends, with a plurality of contact portions extending away from the top side independently from each other. The attachment base plate is of rectangular, elongated outline extending along an attachment longitudinal axis and an attachment lateral axis, the extension along the attachment longitudinal axis being predominant. At least one contact portion has a different longitudinal length than another contact portion, the longitudinal length being measured along the attachment longitudinal axis.

Abstract: A heat exchanger assembly, including a heat exchanger with a primary tube including a first fluid channel for a heat exchange fluid; a first heat source module with a plurality of first heat sources; an attachment with a plurality of contact portions exposed to the plurality of first heat sources, mounted on the primary tube adjacent to the first fluid channel.

Abstract: Aircraft control systems to enable shared input controls. A single inceptor may provide outputs to control both land-based aircraft controls and air-based aircraft controls to reduce the number of inceptors required. In an example a side-stick provides control of both pitch and aircraft nose-wheel steering. Active inceptor technology may be utilised to provide feedback to the operator on the control system state.

Abstract: Aircraft control systems to enable shared input controls. A single inceptor may provide outputs to control both land-based aircraft controls and air-based aircraft controls to reduce the number of inceptors required. In an example a side-stick provides control of both pitch and aircraft nose-wheel steering. Active inceptor technology may be utilised to provide feedback to the operator on the control system state.

Abstract: A method for reducing loads of a wind turbine when a rotor blade of the wind turbine is stuck. The method includes continuously monitoring, via a controller, a loading effect of the stuck rotor blade of the wind turbine. The method also includes providing, via the controller, a predetermined schedule that relates the monitored loading effect of the stuck rotor blade of the wind turbine with a yaw angle for a nacelle of the wind turbine. In addition, the method includes yawing, via the controller, the nacelle of the wind turbine away from an incoming wind direction according to the predetermined schedule.

Abstract: A method for reducing loads of a wind turbine when a rotor blade of the wind turbine is stuck. The method includes continuously monitoring, via a controller, a loading effect of the stuck rotor blade of the wind turbine. The method also includes providing, via the controller, a predetermined schedule that relates the monitored loading effect of the stuck rotor blade of the wind turbine with a yaw angle for a nacelle of the wind turbine. In addition, the method includes yawing, via the controller, the nacelle of the wind turbine away from an incoming wind direction according to the predetermined schedule.

Abstract: The present subject matter is directed to a system and method for sequencing Light Detecting and Ranging (LIDAR) sensor beam signals from a LIDAR sensor mounted on a nacelle of a wind turbine with the rotor position of the wind turbine so as to improve signal availability. More specifically, the method includes generating, via the LIDAR sensor, one or more laser signals towards the rotor of the wind turbine, the rotor having one or more rotor blades. The method also includes receiving, via a controller, a rotor position of the rotor of the wind turbine. Thus, the method further includes coordinating, via a control algorithm programmed within the controller, the rotor position with the one or more laser signals of the laser sensor so as to minimize interference between the laser signal(s) and the rotor blades during rotation of the rotor.

Abstract: The present disclosure is directed to systems and methods for de-icing a rotor blade of a wind turbine. The wind turbine has a nacelle mounted atop a tower. The nacelle has a rotor with a rotatable hub having rotor blade mounted thereto. The method includes shutting down the wind turbine in response to detecting ice on the rotor blade. The method also includes positioning the wind turbine in a de-icing position, the de-icing position including at least one of yawing the nacelle of the wind turbine such that the rotor is in a down-wind location of the tower or pitching the rotor blade such that a leading edge of the rotor blade is facing the tower. Another step includes de-icing the rotor blade while the rotor is in the de-icing position.

Abstract: A method for controlling a wind turbine may generally include operating the wind turbine at an initial power output that is greater than a rated power output associated with the wind turbine. The wind turbine may have an anticipated operational life at the rated power output. In addition, the method may include decreasing a power output of the wind turbine over time in order to maintain an actual operating life of the wind turbine substantially equal to or greater than the anticipated operational life. A final power output of the wind turbine at an end of the anticipated operating life may be less than the rated power output.

Abstract: The present disclosure is directed to systems and methods for de-icing a rotor blade of a wind turbine. The wind turbine has a nacelle mounted atop a tower. The nacelle has a rotor with a rotatable hub having rotor blade mounted thereto. The method includes shutting down the wind turbine in response to detecting ice on the rotor blade. The method also includes positioning the wind turbine in a de-icing position, the de-icing position including at least one of yawing the nacelle of the wind turbine such that the rotor is in a down-wind location of the tower or pitching the rotor blade such that a leading edge of the rotor blade is facing the tower. Another step includes de-icing the rotor blade while the rotor is in the de-icing position.

Abstract: The present subject matter is directed to a system and method for sequencing Light Detecting and Ranging (LIDAR) sensor beam signals from a LIDAR sensor mounted on a nacelle of a wind turbine with the rotor position of the wind turbine so as to improve signal availability. More specifically, the method includes generating, via the LIDAR sensor, one or more laser signals towards the rotor of the wind turbine, the rotor having one or more rotor blades. The method also includes receiving, via a controller, a rotor position of the rotor of the wind turbine. Thus, the method further includes coordinating, via a control algorithm programmed within the controller, the rotor position with the one or more laser signals of the laser sensor so as to minimize interference between the laser signal(s) and the rotor blades during rotation of the rotor.

Abstract: A system includes a turbine having an exhaust flow path through a plurality of turbine stages, wherein the plurality of turbine stages is driven by combustion products flowing through the exhaust flow path, at least one main combustor disposed upstream from the turbine, wherein the at least one main combustor is configured to combust a fuel with a first oxidant and an exhaust gas to generate the combustion products, at least one reheat combustor disposed in or between turbine stages of the turbine, wherein the at least one reheat combustor is configured to reheat the combustion products by adding a second oxidant to react with unburnt fuel in the combustion products, and an exhaust gas compressor, wherein the exhaust gas compressor is configured to compress and route the exhaust gas from the turbine to the at least one main combustor along an exhaust recirculation path.

Abstract: A fiber reinforced composite material containing a polymeric resin matrix reinforced by fabrics consisting of co-mingled glass/carbon yarns for a doctor blade.

Abstract: A method of separating carbon dioxide (CO2) from nitrogen (N2) and oxygen (O2) within a turbine engine system includes, in an exemplary embodiment, directing an air stream into an air separation unit (ASU), separating N2 from the air stream in the ASU to form an oxygen (O2) rich air stream, and directing the O2 rich air stream to the combustor to mix with a fuel for combustion forming hot combustion gases, containing O2 and CO2, which are used to rotate the turbine. The method also includes directing turbine expander exhaust gases to a heat recovery steam generator (HRSG) to create steam, directing exhaust from the HRSG to a condenser to separate water from a mixture of O2 and CO2 gases, and directing the mixture of O2 and CO2 gases to a separation system where the CO2 is separated from the O2 gases and removed from the separation system.

Abstract: Ambient air is compressed into a compressed ambient gas flow with a main air compressor. The compressed ambient gas flow having a compressed ambient gas flow rate is delivered to a turbine combustor and mixed with a fuel stream having a fuel stream flow rate and a portion of a recirculated low oxygen content gas flow to form a combustible mixture. The combustible mixture is burned and forms the recirculated low oxygen content gas flow that drives a turbine. A portion of the recirculated low oxygen content gas flow is recirculated from the turbine to the turbine compressor using a recirculation loop. The compressed ambient gas flow rate and the fuel stream flow rate are adjusted to achieve substantially stoichiometric combustion. An excess portion, if any, of the compressed ambient gas flow is vented. A portion of the recirculated low oxygen content gas flow is extracted using an extraction conduit.

Abstract: A fuel control system for a gas turbine engine that includes a primary fuel circuit, a fuel tuning circuit, a plurality of combustors connected to the fuel tuning circuit, oxygen and carbon dioxide sensors in the exhaust stream and a feedback control loop operatively connected to the fuel tuning circuit and to the oxygen and carbon monoxide sensors which serve to control the precise amount of fuel and air being fed to each one of the plurality of combustors in the engine. A parallel array of control valves in a tuning fuel circuit connect to corresponding ones of the plurality of combustors in the gas turbine engine. The fuel control system thereby “fine tunes” the amount of fuel and air being fed to each combustor using data regarding the detected oxygen and carbon monoxide concentrations in the exhaust gas as provided through a feedback control loop.

Abstract: A coal treatment system, comprising an advanced coal treatment stage configured to produce ultra clean coal, wherein the stage comprises a leaching agent treatment system configured to remove a mineral from the coal and form a wastewater stream; and a dewatering system in fluid communication with the leaching agent treatment system and configured to reduce a concentration of a contaminant in the wastewater stream, wherein the dewatering system comprises a reverse osmosis membrane in fluid communication with the wastewater stream.

Abstract: A method for controlling a wind turbine may generally include operating the wind turbine at an initial power output that is greater than a rated power output associated with the wind turbine. The wind turbine may have an anticipated operational life at the rated power output. In addition, the method may include decreasing a power output of the wind turbine over time in order to maintain an actual operating life of the wind turbine substantially equal to or greater than the anticipated operational life. A final power output of the wind turbine at an end of the anticipated operating life may be less than the rated power output.

Abstract: In one embodiment, a system is provided that includes a first gas turbine engine. The first gas turbine engine has a first compressor configured to intake air and to produce a first compressed air and a first combustor configured to combust a first mixture to produce a first combustion gas. The first mixture has a first fuel, at least a first portion of the first compressed air, and a second combustion gas from a second gas turbine engine. The first gas turbine engine also includes a first turbine configured to extract work from the first combustion gas.