Abstract: A system includes a silencer baffle which mounts in a fluid conduit along a fluid flow path, where the silencer baffle includes a plurality of baffle sections. At least two baffle sections of the plurality of baffle sections couple together via mating interlock structures, and at least one baffle section of the plurality of baffle sections has first and second baffle portions which couple together via mating joints.

Abstract: The present application provides an inlet air system for cooling an inlet air flow to a compressor of a gas turbine engine. The inlet air system may include a wetted media pad and a drift eliminator positioned downstream of the wetted media pad with an air gap therebetween. The drift eliminator may include a fibrous media pad.

Abstract: The present application provides a method of evaluating media effectiveness in a gas turbine engine. The method may include the steps of receiving a baseline media effectiveness rating, receiving a media replacement cost, receiving a number of operating parameters from a number of sensors, based at least in part on the operating parameters and the baseline media effectiveness rating, determining a media effectiveness model, based at least in part of the media effectiveness model, determining a loss in evaporative benefit cost over time, determining a time t when the loss in evaporative benefit cost exceeds the media replacement cost, and scheduling media replacement at time t.

Abstract: An expansion joint for use between a turbine duct and a diffuser duct includes a first flange coupled to the turbine duct, a second flange coupled to the diffuser duct, and a flexible element positioned between and coupled to the first flange of the turbine duct and the second flange of the diffuser duct. The flexible element defines a trough for receiving a liquid therein. The trough includes a drain pipe configured to channel the liquid away from the trough.

Abstract: An exhaust stack assembly includes an exhaust stack having an internal surface that defines an interior of the exhaust stack. The exhaust stack is configured to receive exhaust gas from at least one turbomachine component and exhaust the exhaust gas to atmosphere. The exhaust gas assembly further includes a plurality of attenuation assemblies disposed in the interior, each of the plurality of attenuation assemblies including a base substrate generally oriented in the direction of flow of the exhaust gas through the interior, each of the plurality of attenuation assemblies further including a plurality of attenuation modules mounted to the base substrate. Each of the plurality of attenuation modules includes a fiber mesh. The fiber mesh is exposed to the exhaust gas in the interior.

Abstract: An inlet bleed heat (IBH) system for use in a turbine engine including a silencer assembly. The inlet bleed heat (IBH) system includes a feed pipe for delivering compressor discharge air. The feed pipe includes a plurality of orifices along at least a portion of a length of the feed pipe, and each orifice of the plurality of orifices extends through a wall of the feed pipe for allowing the compressor discharge air to exit the feed pipe. The system also includes a heat shielding component that extends across the feed pipe, wherein the heat shielding component is configured to reduce heat transfer between the feed pipe and the silencer assembly of the turbine engine.

Abstract: A catalyst arrangement for use with a selective catalytic reduction system includes a frame and a plurality of catalyst elements coupled to the frame. The plurality of catalyst elements is arranged vertically among a plurality of vertical stations. The plurality of vertical stations is successively defined along a height of the catalyst arrangement. The catalyst elements of at least one of the vertical stations are arranged at a plurality of axial positions with respect to an axial direction of a flow of exhaust gases through the selective catalytic reduction system.

Abstract: The present application provides a pulse filtration system for use with a compressor of a gas turbine engine. The pulse filtration system may include a pulse filter, a compressed air system in communication with the pulse filter, and a hydrophobic filter bag surrounding the pulse filter in whole or in part.

Abstract: A system is provided. The system includes an exhaust aftertreatment system configured to treat emissions from a gas turbine. The exhaust aftertreatment system includes multiple ammonia injection grids arranged in multiple stages. Each ammonia injection grid of the multiple ammonia injection grids is configured to inject ammonia into an exhaust flow from the gas turbine. Each ammonia injection grid of the multiple ammonia injection grids is individually tuned to operate with a specific load condition of the gas turbine.

Abstract: A catalyst arrangement for use with a selective catalytic reduction system includes a frame and a plurality of catalyst elements coupled to the frame. The plurality of catalyst elements is arranged vertically among a plurality of vertical stations. The plurality of vertical stations is successively defined along a height of the catalyst arrangement. The catalyst elements of at least one of the vertical stations are arranged at a plurality of axial positions with respect to an axial direction of a flow of exhaust gases through the selective catalytic reduction system.

Abstract: In one embodiment, a system includes an intake section including a filter and one or more strain gauges. The system also includes a processor configured to receive strain information for the filter from the one or more strain gauges and determine an operating condition of the filter based at least in part on the strain information.

Abstract: A system includes a conduit having a fluid flow path and a silencer baffle disposed in a fluid conduit along the fluid flow path, where the silencer baffle has at least two of the plurality of baffle sections are coupled together via mating interlock structures.

Abstract: The present disclosure is directed to a system for regulating a flow of air into a turbomachine. The system includes an inlet section of the turbomachine and a damper having an actuator and a restriction. The damper is positioned within the inlet section and operable to regulate the flow of air into the turbomachine based on a position of the restriction. The system also includes a controller communicatively coupled to the damper. The controller is configured to control the position of the restriction to regulate the flow of air into the turbomachine based on a current operating condition of the turbomachine.

Abstract: A simple-cycle gas turbine system includes an injection system including a plurality of injection tubes that may inject a fluid into a duct of an exhaust processing system that may process exhaust gas generated by a gas turbine engine. The exhaust processing system includes a selective catalytic reduction (SCR) system that may reduce a level of nitrogen oxides (NOx) within the exhaust gas; and a mixing system positioned adjacent to the plurality of injection tubes and within the exhaust processing system. The mixing system includes a mixing module having a plurality of turbulators that may swirl the fluid, or the exhaust gas, or both, in a first swirl direction to encourage turbulent flow along an axis of the exhaust processing system and thereby facilitate mixing between the fluid and the exhaust gas.

Abstract: A compressor inlet housing includes a bleed heat duct assembly that is disposed within the compressor inlet housing. The bleed heat duct assembly includes a duct having a plurality of walls defining an opening and a slot defined along a wall of the plurality of walls. The bleed heat duct further includes a bleed air manifold and a plurality of feed pipe assemblies that is disposed at least partially within the opening and that is in fluid communication with the bleed air manifold. Each feed pipe assembly of the plurality of feed pipe assemblies includes an inner pipe having an upstream end connected to the bleed air manifold, a cap sealingly connected to a downstream end of the inner pipe and a pin that extends outwardly from the cap. The pin extends into the slot.

Abstract: The present application provides a gas turbine engine. The gas turbine engine may include a compressor and an inlet air system positioned upstream of the compressor. The inlet air system may include a wetted media pad for evaporative cooling. The wetted media pad may include a number of synthetic media sheets with a number of micro-channels therein.

Abstract: The present application provides a gas turbine engine. The gas turbine engine may include a compressor and an inlet air system positioned upstream of the compressor. The inlet air system may include a wetted media pad for evaporative cooling. The wetted media pad may include a contoured configuration.

Abstract: The present application provides an inlet air system for cooling an inlet air flow to a compressor of a gas turbine engine. The inlet air system may include a wetted media pad and a drift eliminator positioned downstream of the wetted media pad with an air gap therebetween. The drift eliminator may include a fibrous media pad.

Abstract: The present application provides a gas turbine engine. The gas turbine engine may include a compressor, a turbine, an extraction from the compressor to the turbine, and an extraction cooling system in communication with the extraction. The extraction cooling system may include an evaporative cooling media.

Abstract: The present application provides a method of evaluating media effectiveness in a gas turbine engine. The method may include the steps of receiving a baseline media effectiveness rating, receiving a media replacement cost, receiving a number of operating parameters from a number of sensors, based at least in part on the operating parameters and the baseline media effectiveness rating, determining a media effectiveness model, based at least in part of the media effectiveness model, determining a loss in evaporative benefit cost over time, determining a time t when the loss in evaporative benefit cost exceeds the media replacement cost, and scheduling media replacement at time t.