Power plants – Combustion products used as motive fluid
Patent
1993-07-06
1994-03-29
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
F02C 302
Patent
active
052973840
ABSTRACT:
A wave rotor system includes a wave rotor coupled to first and second end plates. Special ports are provided, one in each of the first and second end plates, to cancel expansion waves generated by the release of working fluid from the wave rotor. One of the expansion waves is reflected in the wave rotor from a reflecting portion, and provided to the special port in the second end plate. Fluid present at the special port in the second end plate has a stagnation pressure and mass flow which is substantially the same as that of the cells of the wave rotor communicating with such special port. This allows for cancellation of the expansion wave generated by the release of working fluid from the wave rotor. The special port in the second end plate has a first end corresponding substantially to the head of the expansion wave, and a second end corresponding substantially to the tail of the expansion wave. Also, the special port is configured to continually change along the circumference of the second end plate to affect expansion wave cancellation. An expansion wave generated by a second release of working fluid from the wave rotor is cancelled in a similar manner to that described above using a special port in the first end plate. Preferably the cycle of operation of the wave rotor system is designed so that the stagnation pressure and mass flow of the fluid present at the special ports is the same so that the special ports may be connected by a common duct.
REFERENCES:
patent: 1180613 (1916-04-01), Siemen
patent: 2852915 (1958-09-01), Jendrassik
patent: 2867981 (1959-01-01), Berchtold
patent: 3082934 (1963-03-01), Spalding
patent: 3164318 (1965-01-01), Barnes et al.
patent: 4123200 (1978-10-01), Horler
patent: 4719746 (1988-01-01), Keller
patent: 4796595 (1989-01-01), El-Nashar et al.
R. D. Pearson, A Gas Wave-Turbine Engine Which Developed 35 11p., and Performed Over a 6:1 Speed Range, Mar. 1985, pp. 125-170, University of Bath, U.K.
George Gyarmathy, How Does The Comprex Pressure-Wave Supercharger Work?, pp. 81-101, BBC Brown, Boveri & Co., Ltd. Baden, Switzerland Society of Automotive Engineers, SAE 830234, Mar. 4, 1983.
Tony A. Kollbrunner, Comprex Supercharging For Passenger Diesel Car Engines, 1980, BBC Brown, Boveri & Co., Ltd., Switzerland, Society of Automatic Engineers, SAE80084, Aug. 11-14, 1980.
Bertsch Richard A.
Kocharov Michael I.
Mackin James A.
Miller Guy M.
Shook Gene E.
LandOfFree
Method for cancelling expansion waves in a wave rotor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for cancelling expansion waves in a wave rotor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for cancelling expansion waves in a wave rotor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-784546