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期刊论文

Experimental study of a large-scale multifunction thermoacoustic engine

邱利民Qiu L. M. Sun D. M. Zhang W. Chen G. B. Gan Z. H. Yan W. L.

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摘要/描述

It is a new way of thinking to drive a pulse-tube refrigerator or other thermoacoustic refrigerator by using thermoacoustic engine instead of mechanical compressors so as to completely eliminate moving parts of refrigeration system for more reliable operation. Ceperley first proposed the idea of traveling-wave thermoacoustic heat engine in 1979 [1] and practically realized by Swift in 1999 [2]. Because the thermoacoustic conversion process occurs in its regenerator is reversible and velocity is in phase with pressure, traveling-wave thermoacoustic engine can produce and transmit acoustic power with higher efficiency theoretically. A large-scale multifunction thermoacoustic engine has been designed and constructed in Zhejiang University with the maximal input power of 5kW. The preliminary results show that the self-made engine has lower onset temperature, higher pressure ratio and higher efficiency, compared with those of the standing-wave thermoacoustic heat engine. With the filling nitrogen of 0.9MPa, the maximal pressure ratio reaches 1.21 and the operation frequency is 25Hz.

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版权说明:以下全部内容由邱利民上传于   2005年07月25日 17时36分52秒,版权归本人所有。

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