Gas compressor

About: Gas compressor is a research topic. Over the lifetime, 91817 publications have been published within this topic receiving 552209 citations.

Low noise fan assembly

Abstract: A gas turbine engine rotor assembly such as a fan or compressor includes a plurality of rotor blades spaced axially from a plurality of stator vanes inside an annular duct. The number of vanes is selected for a predetermined number of blades for obtaining substantially equal values of a cut-off ratio for at least two blade passing frequency harmonics for reducing spinning mode noise from the duct.

A three-wheel air turbocompressor for pem fuel cell systems

Abstract: A fuel cell system comprises a compressor (11) and a fuel processor (15) downstream of the compressor. A fuel cell stack (17) is in communication with the fuel processor and compressor. A combustor (18) is downsteam of the fuel cell stack. First and second turbines (19, 20) are downstream of the fuel processor and in parallel flow communication with one another. A distribution valve (39) is in communication with the first and second turbines. The first and second turbines are mechanically engaged to the compressor. A bypass valve (13) is intermediate the compressor and the second turbine, with the bypass valve enabling a compressed gas from the compressor to bypass the fuel processor.

Two-stage supercharging systems for internal combustion engines

Abstract: An improved method and apparatus for increasing the charge air supply to an internal combustion engine throughout the engine operating range, and more particularly, at low engine speeds, and combines controlled two-stage compression of charge air with improved turbocharger operation to achieve a particularly flexible and effective supercharging system. Such supercharging systems are provided by a first charge air compressor driven by an electric motor, a second charge air compressor driven by an exhaust gas driven turbine, gas control means for the supercharging system and a control for the electric motor-driven compressor and gas control means. Preferably, the turbine-driven charge air compressor is also driven by a second electric motor operated by the control, and the gas control means comprises an exhaust gas diverter valve for the exhaust gas turbine inlet and pre-whirl vanes for the turbine-driven compressor inlet, both operated by the control.

Power plant and method of operation

Abstract: A power plant and method of operation is provided. The power plant comprises at least one main air compressor, an oxidizer unit configured to deliver a compressed oxygen-rich gas flow to at least one gas turbine assembly. Each assembly comprises a turbine combustor for mixing the compressed oxygen-rich gas flow with a recirculated gas flow and a fuel stream to burn a combustible mixture and form the recirculated gas flow. The assembly also comprises a recirculation loop for recirculating the recirculated gas flow from a turbine to a turbine compressor. The assembly further comprises a recirculated gas flow extraction path for extracting a portion of the recirculated gas flow from the assembly and delivering this to a gas separation system. The gas separation system separates the portion of the recirculated gas flow into a nitrogen portion and a carbon dioxide portion.