Low temperature generation process and expansion engine

Details Low temperature generation process and expansion engine Low temperature generation process and expansion engine

1992-04-30

1994-06-14

Bennett, Henry A.

Refrigeration

Refrigeration producer

62 6, 62 87, F25B 900

Patent

active

053199480

ABSTRACT:
In a low temperature generation process, compressed gas (3) at high pressure enters from an inlet nozzle (1) and alternately expands into one of two resonator tubes (A,B) of an expansion engine. The expanding gas excites standing acoustic waves (4) in the resonator tubes (A,B). The acoustic energy of the waves (4) is converted into electrical energy by acoustic/electric power converters and is led away outside the "cold area" of the tubes. The expansion engine contains one or more resonator tubes with a common inlet nozzle (1). Each resonator tube has an acoustic/electric power converter (5) and an exhaust port (6). Together with a compressor, a heat exchanger and a heat sink, the expansion engine provides a very effective cooling system which may be used for the cooling of small electronic devices like chips or modules.

REFERENCES:
patent: 4444019 (1984-04-01), Arkharov et al.
patent: 5167124 (1992-12-01), Lucas

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