Abstract: A power generation system having an exhaust gas attemperating device and method for controlling a temperature of exhaust gases is provided. The exhaust gas attemperating device includes a first conduit and a venturi member. The first conduit is configured to receive at least a portion of exhaust gases from a gas turbine. The venturi member is disposed in the first conduit and defines a flow path therethrough for receiving the exhaust gases in the first conduit. The first conduit and the venturi member have an aperture extending therethrough communicating with the flow path, such that the exhaust gases flowing through the flow path draws ambient air through the aperture into the flow path for reducing a temperature of the exhaust gases flowing through the first conduit.

Abstract: A composition including a polycrystalline metal nitride having a number of grains is provided. These grains have a columnar structure with one or more properties such as, an average grain size, a tilt angle, an impurity content, a porosity, a density, and an atomic fraction of the metal in the metal nitride. An apparatus for preparing a metal nitride is provided. The apparatus may include a housing having an interior surface that defines a chamber and an energy source to supply energy to the chamber. A first inlet may be provided to flow a nitrogen-containing gas into the chamber. Raw materials may be introduced into the chamber through a raw material inlet. A second inlet may be provided to flow in a halide-containing gas in the chamber. The apparatus may further include a controller, which communicates with the various components of the apparatus such as, sensors, valves, and energy source, and may optimize and control the reaction.

Abstract: A method of making a metal nitride is provided. The method may include introducing a metal in a chamber. A nitrogen-containing material may be flowed into the chamber. Further, a hydrogen halide may be introduced. The nitrogen-containing material may react with the metal in the chamber to form the metal nitride.

Abstract: A power generation system having an exhaust gas attemperating device and method for controlling a temperature of exhaust gases is provided. The exhaust gas attemperating device includes a first conduit and a venturi member. The first conduit is configured to receive at least a portion of exhaust gases from a gas turbine. The venturi member is disposed in the first conduit and defines a flow path therethrough for receiving the exhaust gases in the first conduit. The first conduit and the venturi member have an aperture extending therethrough communicating with the flow path, such that the exhaust gases flowing through the flow path draws ambient air through the aperture into the flow path for reducing a temperature of the exhaust gases flowing through the first conduit.

Abstract: An exhaust gas attemperating device is provided. The exhaust gas attemperating device includes a conduit in fluid communication with a gas turbine. The conduit is configured to receive exhaust gases from the gas turbine and has one or more apertures extending therethrough. The exhaust gas attemperating device further includes one or more atomizing nozzles extending through the apertures of the conduit. The atomizing nozzle is configured to inject a liquid through the aperture into the conduit, such that the liquid evaporates and decreases a temperature and an oxygen concentration of the exhaust gases in the conduit.

Abstract: A power generation system and method includes a first gas turbine system comprising a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels. The first gas turbine system also includes a first compressor configured to supply a first portion of compressed oxidant to the first combustion chamber and a first turbine configured to receive a first discharge from the first combustion chamber and generate a first exhaust and electrical energy. The power generation system further includes a second gas turbine system comprising a second combustion chamber configured to combust a second fuel stream to generate a second discharge. The first compressor of the first gas turbine system is configured to supply a second portion of compressed oxidant to the second combustion chamber.

Abstract: Burner assembly for a cooking range is provided. The burner assembly includes a gas-heat subassembly, and a radiant heat subassembly. An electromechanical interface is configured to detachably interconnect the subassemblies to one another. The electromechanical interface is further configured to pass electrical power to the radiant heat subassembly.