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Experimental study on a large-scale multifunctional thermoacoustic engine.

Author(s) : QIU L. M., SUN D. M., ZHANG W., et al.

Summary

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

Details

  • Original title: Experimental study on a large-scale multifunctional thermoacoustic engine.
  • Record ID : 2006-1042
  • Languages: English
  • Source: Cryogenics and refrigeration. Proceedings of ICCR 2003.
  • Publication date: 2003/04/22

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