Liquid-sodium thermoacoustic engine

Migliori, A.; Swift, G. W.
August 1988
Applied Physics Letters;8/1/1988, Vol. 53 Issue 5, p355
Academic Journal
We have constructed a thermoacoustic engine that uses liquid sodium as its working substance. The engine generates acoustic power using heat flowing from a high-temperature source to a low-temperature sink. The measured performance of this engine disagrees significantly with numerical calculations based on our theory of thermoacoustic engines. The efficiency of the engine is a substantial fraction of Carnot’s efficiency, and its power density is comparable to that of the conventional heat engines in widespread use. Thus we expect this type of engine to be of practical, economic importance.


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