Pressure wave machine operating as pressure exchanger, in partic

Details Pressure wave machine operating as pressure exchanger, in partic Pressure wave machine operating as pressure exchanger, in partic

1985-09-26

1987-07-14

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

With gear, pressure exchanger, or screw-type compressor

417 64, F02C 302

Patent

active

046793933

ABSTRACT:
A pressure exchanger, preferably usable as a high-pressure compressor for gas turbine installations, has a multiplicity of coaxial cell rotors which can be driven in the same direction, and a central pressure exchanger combustion chamber located within the innermost cell rotor. Driving gases generated in the combustion chamber flow through the cell rotors in series from inside to outside and can be expanded as low pressure driving gases in the low pressure part of the turbine. The air to be compressed flows through the cell rotors in series from the outermost cell rotor towards the inside. A part of the air mass flow compressed to the final pressure, which part is greater than the driving gas mass flow, arrives as combustion air in the pressure exchanger combustion chamber; the other part of the air can be used as combustion air for a turbine combustion chamber, which generates high pressure driving gas for the gas turbine. The inlet and outlet cross-sections of the driving gas and air ports in the control casings are so designed that the closing edge of the low pressure air port viewed in the rotational direction of the cell rotor, is located before the closing edge of the low pressure driving gas port.

REFERENCES:
patent: 2959344 (1960-11-01), Niedermann
patent: 2970745 (1961-02-01), Berchtold
patent: 3012708 (1961-12-01), Berchtold et al.
patent: 3084511 (1963-04-01), Klapproth
patent: 3159002 (1964-12-01), Spalding
patent: 3206107 (1965-09-01), Waleffe et al.
Proceedings of the Institution of Mechanical Engineers 1965-66, vol. 180, Part I, No. 18, London P. H. Azoury: "An Introduction to the Dynamic Pressure Exchanger".

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