Abstract: A method is disclosed for connecting gas turbine engine gasifier components to a transmission, generator or other load. The interface of an engine gasifier module and a load module is made between one of the gasifier turbo-compressor spools and the free power turbine. This connection is between ducting components. This reduces the precision required to mate an engine module with a load module. In the case of a large vehicle, it is possible to mount an engine skid between the structural frame members of the truck cab, in the traditional engine compartment of the cab or vertically behind the cab of the truck since the engine module can be connected to the truck's transmission module via ducting between a gasifier module components and the free power turbine and ducting between the free power turbine and exhaust or recuperator.

Abstract: A system includes an electrical load formed by a number of circuits within a system performing telecommunication functions, primary and backup sources of electrical power, and a relay that switches an input to the electrical load from the primary source to the backup source in response to determining that a failure has occurred within the primary source. The backup source includes a microturbine driving a six-phase, high-frequency alternator, which is turned on in response to determining that such a failure has occurred, and, preferably, a battery array that provides backup power when adequate power is not available from the alternator driven by the microturbine.

Abstract: The annular recuperator for use with a microturbine includes an involuted shaped inner member with a portion thereof being corrugated and an involuted shaped outer member also with a portion thereof being corrugated and spaced therefrom to define a cell. The end portions of both the inner and outer members is planar and define a header for admitting and discharging the fluid flowing in the cell. The edges of the inner and outer members are sealed and an inlet and outlet are fluidly connected to the respective headers. The cells are circumferentially mounted side by side and abut each other but leaving sufficient space for another medium to flow through the space and be place in indirect heat exchange with the fluid flowing in the cell.

Abstract: The microturbine engine that is typically utilized to power an electrical generating system and/or boiler, chiller and the like includes a second boiler and a by-pass system for providing heated water at two different levels or where one of the boilers provides steam. The turbine exhaust is utilized as the heat transport medium and is directly connected to one of the boilers while the other is connected to the recuperator. The system can optionally provide cooling to the electrical and electronic components of the system by providing a water circuit for leading water into the electric and electronic components prior to feeding the boilers. The system is designed to assure that the delta heat difference between the medium being heated and the waste heat of the turbine is sufficient so that the heat exchange will be done efficiently.

Abstract: A segmented seal plate supporting a brush seal mounted in the space between the compressor and turbine and bearing against the shaft of a microturbine engine form a barrier in this cavity and serves to control flow in this space. A plurality of circumferentially spaced discretely sized holes in the seal plate judiciously located above the brush seal bearing against the shaft interconnecting the back-to-back mounted compressor/turbine controls the amount of cooling air so that the combination of the brush seal, segmented plate and discretely sized holes controls the leakage from the compressor of each engine of a given model and controls cooling flow to the turbine for reducing efficiency scatter from engine to engine.

Abstract: The flow path of the exhaust of a recuperator of a microturbine engine system is routed to insulate the turbine exhaust in the recuperator. The recuperator is encapsulated for defining a passage for flowing the exhaust over the outer diameter of the recuperator so as to insulate the heat within the recuperator. A by-pass system that is operable mechanically or automatically directs turbine exhaust to by-pass the recuperator is disclosed in another embodiment. The by-pass serves to trim the efficiencies of the original manufactured microturbine engines so that all the engines attain a given preselected matching efficiency level. The by-pass can also be utilized to control the temperature of a boiler, chiller or other elements incorporated in the microturbine system by controlling the turbine exhaust to by-pass the recuperator.

Abstract: A segmented seal plate supporting a brush seal mounted in the space between the compressor and turbine and bearing against the shaft of a microturbine engine form a barrier in this cavity and serves to control flow in this space. A plurality of circumferentially spaced discretely sized holes in the seal plate judiciously located above the brush seal bearing against the shaft interconnecting the back-to-back mounted compressor/turbine controls the amount of cooling air so that the combination of the brush seal, segmented plate and discretely sized holes controls the leakage from the compressor of each engine of a given model and controls cooling flow to the turbine for reducing efficiency scatter from engine to engine.

Abstract: The flow path of the exhaust of a recuperator of a microturbine engine system is routed to insulate the turbine exhaust in the recuperator. The recuperator is encapsulated for defining a passage for flowing the exhaust over the outer diameter of the recuperator so as to insulate the heat within the recuperator. A by-pass system that is operable mechanically or automatically directs turbine exhaust to by-pass the recuperator is disclosed in another embodiment. The by-pass serves to trim the efficiencies of the original manufactured microturbine engines so that all the engines attain a given preselected matching efficiency level. The by-pass can also be utilized to control the temperature of a boiler, chiller or other elements incorporated in the microturbine system by controlling the turbine exhaust to by-pass the recuperator.

Abstract: The microturbine engine that is typically utilized to power an electrical generating system and/or boiler, chiller and the like includes a second boiler and a by-pass system for providing heated water at two different levels or where one of the boilers provides steam. The turbine exhaust is utilized as the heat transport medium and is directly connected to one of the boilers while the other is connected to the recuperator. The system can optionally provide cooling to the electrical and electronic components of the system by providing a water circuit for leading water into the electric and electronic components prior to feeding the boilers. The system is designed to assure that the delta heat difference between the medium being heated and the waste heat of the turbine is sufficient so that the heat exchange will be done efficiently.

Abstract: The annular recuperator for use with a microturbine includes an involuted shaped inner member with a portion thereof being corrugated and an involuted shaped outer member also with a portion thereof being corrugated and spaced therefrom to define a cell. The end portions of both the inner and outer members is planar and define a header for admitting and discharging the fluid flowing in the cell. The edges of the inner and outer members are sealed and an inlet and outlet are fluidly connected to the respective headers. The cells are circumferentially mounted side by side and abut each other but leaving sufficient space for another medium to flow through the space and be place in indirect heat exchange with the fluid flowing in the cell.

Abstract: Today, the trend is to increase the temperature of operation of gas turbine engines. To cool the components with compressor discharge air, robs air which could otherwise be used for combustion and creates a less efficient gas turbine engine. The present low thermal expansion sealing ring support system reduces the quantity of cooling air required while maintaining life and longevity of the components. Additionally, the low thermal expansion sealing ring reduces the clearance "C","C'" demanded between the interface between the sealing surface and the tip of the plurality of turbine blades. The sealing ring is supported by a plurality of support members in a manner in which the sealing ring and the plurality of support members independently expand and contract relative to each other and to other gas turbine engine components.