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Thermoacoustic refrigerators and engines comprising cascading stirling thermodynamic units

United States Patent

8,468,838
June 25, 2013
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
The present invention includes a thermoacoustic assembly and method for improved efficiency. The assembly has a first stage Stirling thermal unit comprising a main ambient heat exchanger, a regenerator and at least one additional heat exchanger. The first stage Stirling thermal unit is serially coupled to a first end of a quarter wavelength long coupling tube. A second stage Stirling thermal unit comprising a main ambient heat exchanger, a regenerator, and at least one additional heat exchanger, is serially coupled to a second end of the quarter wavelength long coupling tube.
Backhaus; Scott (Espanola, NM), Swift; Greg (Santa Fe, NM)
Los Alamos National Security, LLC (Los Alamos, NM)
12/ 415,880
March 31, 2009
STATEMENT OF FEDERAL RIGHTS The United States government has rights in this invention pursuant to Contract No. DE-AC52-06NA25396 between the United States Department of Energy and Los Alamos National Security, LLC for the operation of Los Alamos National Laboratory.