A waste heat recovery system for recovering rejected heat of an internal combustion engine includes a turbine expander. The turbine expander outputs power based on a working fluid and includes a turbine blade that is rotatable by the working fluid, a shaft that is coupled to and rotatable by the turbine blade and extends along a longitudinal axis, and a nozzle assembly for directing the working fluid to the turbine blade for rotating the turbine blade. The nozzle assembly includes a nozzle housing disposed about the shaft and adjacent the turbine blade, and a nozzle for accelerating the working fluid. The nozzle component defines a nozzle throat having a geometrical configuration. The waste heat recovery system further includes a passive control coupled to the nozzle component for directing the working fluid.

A combined cycle turbine plant having at least one gas turbine, a steam turbine and at least one waste heat steam generator. The waste heat steam generator has at least one condensate pre-heater into which a condensate line discharges, and has a feed water pre-heater which is connected upstream of the condensate pre-heater in the flow direction of a gas turbine flue gas and upstream of which, on the feed water side, there is connected a feed water pump, and which is connected to a fuel preheating unit for the gas turbine. From the fuel preheating unit a line for cooled feed water discharges into a motive medium inlet of a jet pump of which the suction medium inlet is connected to an outlet of the condensate pre-heater and of which the outlet is connected to the condensate line. A corresponding method recirculates condensate in a combined cycle turbine plant.

In a combined cycle plant and a method for operating the same, the combined cycle plant is provided with a gas turbine, a waste heat recovery boiler, and a steam turbine, and is also provided with a low-pressure gland steam line for supplying steam to a low-pressure gland portion of a low-pressure turbine, and a first heat exchanging unit which performs heat exchange between gland steam flowing through the low-pressure gland steam line, and fuel gas to be supplied to a combustor.

A tesla-type turbine for converting the enthalpy of a gas volume flow into mechanical energy, a method for operating the Tesla-type turbine, and an apparatus for converting thermal energy into mechanical energy, a method for converting thermal energy into mechanical energy, and a method for converting thermal energy into electrical energy. The Tesla-type turbine has at least one disc which is positioned on an axis of rotation and is set into rotation by a gas volume flow flowing substantially tangentially, so that mechanical energy can be collected at a shaft coupled to the disc. A disc body that forms the disc has at least one cavity in which, for the purpose of cooling the disc body, a cooling medium, in particular a cooling liquid, is received or can be received.

An exhaust gas turbocharger assembly for a turbocharged internal combustion engine with a spiral housing, having at least two separated flow passages, at least one separating tongue separating the adjacent flow passages, and a turbine rotor, wherein the separating tongue is arranged such that the end of the separating tongue, said end facing the turbine rotor, is spaced from the edge of the turbine rotor such that crosstalk between the flow passages in the flow direction occurs upstream of the turbine rotor, wherein a crosstalk cross section A.sub.ÜS is determinable depending on the distance between the separating tongue end and the edge of the turbine rotor.

A heating system is configured to produce heated fluid. The system includes a source of primary fluid, a diffusing structure comprising an outlet structure out of which the heated fluid flows, at least one conduit coupled to the source and the diffusing structure and configured to introduce to the diffusing structure the primary fluid, and an intake structure coupled to the diffusing structure and configured to introduce to the diffusing structure a secondary fluid accessible to the system. The heated fluid includes the primary and secondary fluids.

At a well site, equipment will need a power source, such as a gas turbine, to operate. As the gas turbine operates, wasted energy in the form of heat is produced as a result of the efficiency of the gas turbine. With regards to the present disclosure, the heat may be used for operations and treatments at the well site. An embodiment of the present disclosure is a heat recovery system, comprising a gas turbine; a first heat exchanger, wherein the first heat exchanger is a finned-tube heat exchanger; and a second heat exchanger, wherein the second heat exchanger is a tube and shell heat exchanger, wherein the first heat exchanger is disposed in the flow path of an exhaust stream of the gas turbine, wherein the first heat exchanger is fluidly coupled to the second heat exchanger.

A propulsion system for an aircraft includes a gas generating core engine that generates an exhaust gas flow that is expanded through a turbine section. A power turbine engine is forward of the core engine and is coupled to drive a propulsor. A hydrogen fuel system supplies hydrogen fuel to the combustor through a fuel flow path. A condenser extracts water from the exhaust gas flow. A water separator is in communication with the condenser and directs the extracted water to a water storage tank. An evaporator receives a portion of the water that is extracted by the condenser and generates a steam flow. The steam flow is injected into the core flow path upstream of the turbine section.

A method of operating an aircraft engine of an aircraft, the aircraft engine having a common-rail fuel injection system for injecting fuel into a combustion chamber of the aircraft engine, including: pressurizing fuel for circulation through the common-rail injection system; circulating a portion of the pressurized fuel through a motive flow inlet of an ejector pump; and entraining a flow through the ejector pump with the portion of the pressurized fuel circulating through the motive flow inlet.

This disclosure teaches a gas turbine heater that can be used in either portable or stationary applications. In one embodiment, a gas turbine heater includes a gas turbine engine that generates hot exhaust gas, an air blower that draws an amount of air flow from ambient, a mixing plenum that allows the gas turbine exhaust and ambient air flow to mix together to create warm air, and an outlet that delivers the warm air to the customer. In another embodiment, a gas turbine heater includes a gas turbine engine that generates hot exhaust gas, an air blower that draws an amount of air flow from ambient, an air-to-air heat exchanger that transfers heat from the gas turbine exhaust to the ambient air flow to create warm air, and an outlet that delivers the warm air to the customer.