Thermoacoustic devices are disclosed wherein, for some embodiments, a combustion zone provides heat to a regenerator using a mean flow of compressible fluid. In other embodiments, burning of a combustible mixture within the combustion zone is pulsed in phase with the acoustic pressure oscillations to increase acoustic power output. In an example embodiment, the combustion zone and the regenerator are thermally insulated from other components within the thermoacoustic device.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
The U.S. government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of contract number F49620-99-C-0054 awarded by the National Defense Science and Engineering Graduate Fellowship, a part of the United States Air Force Office of Scientific Research.
Additionally, this invention was made at least in part with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The U.S. government has certain rights in the invention.