Power plants – Combustion products used as motive fluid
Patent
1997-04-18
1999-04-20
Freay, Charles G.
Power plants
Combustion products used as motive fluid
60 3945, F02C 302
Patent
active
058947191
ABSTRACT:
A method and apparatus for cold gas reinjection in through-flow and reverse-flow wave rotors having a plurality of channels formed around a periphery thereof. A first port injects a supply of cool air into the channels. A second port allows the supply of cool air to exit the channels and flow to a combustor. A third port injects a supply of hot gas from the combustor into the channels. A fourth port allows the supply of hot gas to exit the channels and flow to a turbine. A diverting port and a reinjection port are connected to the second and third ports, respectively. The diverting port diverts a portion of the cool air exiting through the second port as reinjection air. The diverting port is fluidly connected to the reinjection port which reinjects the reinjection air back into the channels. The reinjection air evacuates the channels of the hot gas resident therein and cools the channel walls, a pair of end walls of the rotor, ducts communicating with the rotor and subsequent downstream components. In a second embodiment, the second port receives all of the cool air exiting the channels and the diverting port diverts a portion of the cool air just prior to the cool air flowing to the combustor.
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Optimization of Wave Rotos for Use as Gas Turbine Engine Topping Cyuucles by Jack Wilson and Daniel E. Paxson, Dayton, OH; May 23-25, 1995.
Wave Rotor-Enhanced Gas Turbine Engines by Gerard E. Welch and Scott M. Jones and Daniel E. Paxson, San Diego, CA; Jul. 10-12, 1995.
Nalim M. Razi
Paxson Daniel E.
Freay Charles G.
Stone Kent N.
The United States of America, as represented by the Administrato
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