A system for reducing a temperature of an exhaust gas stream of a gas turbine system according to an embodiment includes: a compressor component of a gas turbine system; an airflow generation system for attachment to a rotatable shaft of the gas turbine system, the airflow generation system and the compressor component drawing in an excess flow of air through an air intake section; a mixing area for receiving an exhaust gas stream produced by the gas turbine system; an air extraction system for: extracting at least a portion of the excess flow of air generated by the airflow generation system and the compressor component to provide bypass air; and diverting the bypass air into the mixing area to reduce a temperature of the exhaust gas stream; and a fluid injection system for injecting an atomized fluid into the mixing area to reduce a temperature of the exhaust gas stream.

This system for purging a fuel containing hydrogen comprises a gas turbine. The gas turbine comprises at least one combustion chamber (20) provided with at least one injector (52) of the fuel, an exhaust section and a hot gas circuit going from the combustion chamber (20) to the exhaust section. The system comprises at least one point of injection (A, A′) of air and/or of inert gas positioned on the hot gas circuit.

A gas turbine engine includes; a compressor, a combustor, and a turbine in serial flow relationship; a heat exchanger, the heat exchanger having an inlet, an outlet, and an internal surface coated with a catalyst, the heat exchanger being located upstream of the compressor; a source of hydrocarbon fuel in fluid communication with the inlet of the heat exchanger; a source of oxygen in fluid communication with the inlet of the heat exchanger; and a distribution system for receiving reformed hydrocarbon fuel from the heat exchanger.

A thermal power generation system includes a combustor burning oxygen and fuel with supercritical CO.sub.2, a turbine driven by the supercritical CO.sub.2 and water vapor fed from the combustor, a low-pressure supercritical CO.sub.2 storage storing low-pressure supercritical CO.sub.2 from the turbine, a compressor compressing the low-pressure supercritical CO.sub.2, a high-pressure supercritical CO.sub.2 storage storing high-pressure supercritical CO.sub.2 from the compressor, and a high-pressure supercritical CO.sub.2 feeder supplying between the high-pressure supercritical CO.sub.2 storage and the combustor, in which the high-pressure supercritical CO.sub.2 feeder supplies the high-pressure supercritical CO.sub.2 to the combustor at a constant pressure. Thus, the thermal power generation system can perform adjustment of an electric power supply required to use unstable renewable energy sources such as solar and wind power, can achieve high efficiency power generation with high temperature working fluid, and can reduce emissions of environmental load substances such as NO.sub.x and CO.sub.2.

A thermal power generation system includes a combustor burning oxygen and fuel with supercritical CO.sub.2, a turbine driven by the supercritical CO.sub.2 and water vapor fed from the combustor, a low-pressure supercritical CO.sub.2 storage storing low-pressure supercritical CO.sub.2 from the turbine, a compressor compressing the low-pressure supercritical CO.sub.2, a high-pressure supercritical CO.sub.2 storage storing high-pressure supercritical CO.sub.2 from the compressor, and a high-pressure supercritical CO.sub.2 feeder supplying between the high-pressure supercritical CO.sub.2 storage and the combustor, in which the high-pressure supercritical CO.sub.2 feeder supplies the high-pressure supercritical CO.sub.2 to the combustor at a constant pressure. Thus, the thermal power generation system can perform adjustment of an electric power supply required to use unstable renewable energy sources such as solar and wind power, can achieve high efficiency power generation with high temperature working fluid, and can reduce emissions of environmental load substances such as NO.sub.x and CO.sub.2.

The method allows to control a test apparatus for a gas turbine engine; WI values of one or more tentative fuel gas mixtures are predicted by calculations and the predicted WI values are used for setting the composition of a fuel gas mixture to be supplied to a combustor of a gas turbine engine under test. The test apparatus comprises: a first supply flow line for fuel gas; a second supply flow line for inert gas; a mixer with a first inlet for fuel gas and a second inlet for inert gas, and with an outlet for supplying the mixture of fuel gas and inert gas to the combustor; a set of meters; and a flow control device for the inert gas.

The method allows to control a test apparatus for a gas turbine engine; WI values of one or more tentative fuel gas mixtures are predicted by calculations and the predicted WI values are used for setting the composition of a fuel gas mixture to be supplied to a combustor of a gas turbine engine under test. The test apparatus comprises: a first supply flow line for fuel gas; a second supply flow line for inert gas; a mixer with a first inlet for fuel gas and a second inlet for inert gas, and with an outlet for supplying the mixture of fuel gas and inert gas to the combustor; a set of meters; and a flow control device for the inert gas.

Methods and apparatus for controlling liquid flow to a turbine fogging array. Some implementations are generally directed toward adjusting the output of a variable output pump that supplies water to the turbine fogging array. In some of those implementations, the output is adjusted based on a determined target pump output value that is indicative of a pump output required to change the moisture content of intake air of a combustion turbine to meet a target humidity value. Some implementations are generally directed toward actuating at least one control valve of a plurality of control valves that control liquid throughput to one or more fogging nozzles of a fogging array.

Methods and apparatus for controlling liquid flow to a turbine fogging array. Some implementations are generally directed toward adjusting the output of a variable output pump that supplies water to the turbine fogging array. In some of those implementations, the output is adjusted based on a determined target pump output value that is indicative of a pump output required to change the moisture content of intake air of a combustion turbine to meet a target humidity value. Some implementations are generally directed toward actuating at least one control valve of a plurality of control valves that control liquid throughput to one or more fogging nozzles of a fogging array.

A multi-way valve includes an outer casing provided with an internal cavity, at least one input to the cavity, at least one output from the cavity, the at least one input having sealing means, and an actuator adapted to cause the opening of the sealing means of the inputs. A cross-section of the actuator is smaller than a cross-section of the inner cavity.