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Thermoacoustic refrigeration with compressible liquid as working fluid.

Author(s) : YANG R., YANG Y., XU J., WU Z., LUO E.

Type of article: IJR article

Summary

The classical thermoacoustic refrigeration adopts gases with ideal-gas properties as working fluids. Herein, the thermoacoustic refrigeration using a compressible liquid as the working fluid is investigated for the first time. Two models are utilized parallelly: a highly-simplified short refrigerator model and a far-more realistic full-scale thermoacoustic refrigerator model. The results from the short refrigerator model show that, ideally, the coefficient of performance can reach above 70% of the Carnot limit. In the full-scale system discussion, the coefficient of performance of the system can reach as high as 4.1 in a typical working condition for air conditioning (pumping heat from 285 K to 310 K), with respect to 36% of the Carnot limit. When pumping heat from 332 K to 357 K, the coefficient of performance can reach 44% of the Carnot limit. These results indicate that the efficiency of the thermoacoustic refrigeration with a compressible liquid as the working fluid is potentially high, but with a much smaller displacement amplitude of the fluid. As a result, both the acoustic source (the linear motor, for instance) and the heat exchanger can be much more compact, so that the mass and the volume of the system can be greatly reduced, as well as the cost.

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Pages: 1-11

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Details

  • Original title: Thermoacoustic refrigeration with compressible liquid as working fluid.
  • Record ID : 30032326
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 162
  • Publication date: 2024/06
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2024.03.016

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