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Performance comparison of jet pumps with rectangular and circular tapered channels for a loop-structured traveling-wave thermoacoustic engine

Author

Listed:
  • Tang, K.
  • Feng, Y.
  • Jin, S.H.
  • Jin, T.
  • Li, M.

Abstract

Gedeon streaming can considerably deteriorate the thermal efficiency of a traveling-wave thermoacoustic engine employing a loop configuration. Introducing a jet pump into the loop configuration is one of the effective ways to suppress Gedeon streaming. This paper focuses on the performance comparison between the jet pumps with rectangular and circular tapered channels, by numerically simulating and analyzing the time-averaged pressure drop induced by the jet pumps. Three parameters, i.e., the coefficient of time-averaged resistance, the coefficient of overall resistance, and the coefficient of effectiveness, are proposed to evaluate the performance of a jet pump. The emphasis is put on the effects of cross-sectional shape, thickness-to-diameter ratio, and rounding radius of the tapered channels. In absence of rounding the edge of the tapered channel, the jet pump with a rectangular tapered channel is more efficient to produce the time-averaged pressure drop at a large thickness-to-diameter ratio, while the jet pump with a circular tapered channel is more efficient at a small thickness-to-diameter ratio. However, it should be noted that the directions of the induced time-averaged pressure drops in these two cases are opposite. Rounding the edge of the small opening of the tapered channel can effectively improve jet pump’s performance. Upon rounding, the jet pump with a circular tapered channel can produce a higher time-averaged pressure drop and work more efficiently than the one with a rectangular tapered channel.

Suggested Citation

  • Tang, K. & Feng, Y. & Jin, S.H. & Jin, T. & Li, M., 2015. "Performance comparison of jet pumps with rectangular and circular tapered channels for a loop-structured traveling-wave thermoacoustic engine," Applied Energy, Elsevier, vol. 148(C), pages 305-313.
    • Handle: RePEc:eee:appene:v:148:y:2015:i:c:p:305-313
    DOI: 10.1016/j.apenergy.2015.03.092
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    References listed on IDEAS

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    Cited by:

    1. Wang, Kaixin & Hu, Zhan-Chao, 2023. "Experimental investigation of a novel standing-wave thermoacoustic engine based on PCHE and supercritical CO2," Energy, Elsevier, vol. 282(C).
    2. Jin, Tao & Yang, Rui & Wang, Yi & Liu, Yuanliang & Feng, Ye, 2016. "Phase adjustment analysis and performance of a looped thermoacoustic prime mover with compliance/resistance tube," Applied Energy, Elsevier, vol. 183(C), pages 290-298.
    3. Tsuda, Kenichiro & Ueda, Yuki, 2017. "Critical temperature of traveling- and standing-wave thermoacoustic engines using a wet regenerator," Applied Energy, Elsevier, vol. 196(C), pages 62-67.
    4. Hu, J.Y. & Luo, E.C. & Dai, W. & Zhang, L.M., 2017. "Parameter sensitivity analysis of duplex Stirling coolers," Applied Energy, Elsevier, vol. 190(C), pages 1039-1046.
    5. Jin, Tao & Huang, Jiale & Feng, Ye & Yang, Rui & Tang, Ke & Radebaugh, Ray, 2015. "Thermoacoustic prime movers and refrigerators: Thermally powered engines without moving components," Energy, Elsevier, vol. 93(P1), pages 828-853.

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