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Development and Assessment of Two-Stage Thermoacoustic Electricity Generator

Author

Listed:
  • Ahmed Hamood

    (School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK)

  • Artur J. Jaworski

    (School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK)

  • Xiaoan Mao

    (Faculty of Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK)

Abstract

This paper presents the development and assessment of a two-stage thermoacoustic electricity generator that aims to mimic the conversion of waste heat from the internal combustion engine exhaust gases into useful electricity. The one wavelength configuration consists of two identical stages which allow coupling a linear alternator in a “push-pull” mode because of the 180° out of phase acoustic excitation on two sides of the piston. This type of coupling is a possible solution for the low acoustic impedance of looped-tube traveling-wave thermoacoustic engines. The experimental set-up is 16.1 m long and runs at 54.7 Hz. The working medium is helium at maximum pressure of 28 bar. In practice, the maximum generated electric power was 73.3 W at 5.64% thermal-to-electric efficiency. The working parameters, namely load resistance, mean pressure and heating power, were investigated. System debugging illustrates the effect of local acoustic impedance of the regenerator on the start-up process of the thermoacoustic engine. The additional modelling showed that the feedback loop length can be reduced by using a combination of acoustic inertance and compliance components.

Suggested Citation

  • Ahmed Hamood & Artur J. Jaworski & Xiaoan Mao, 2019. "Development and Assessment of Two-Stage Thermoacoustic Electricity Generator," Energies, MDPI, vol. 12(9), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1790-:d:230217
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    References listed on IDEAS

    as
    1. Wu, Zhanghua & Yu, Guoyao & Zhang, Limin & Dai, Wei & Luo, Ercang, 2014. "Development of a 3kW double-acting thermoacoustic Stirling electric generator," Applied Energy, Elsevier, vol. 136(C), pages 866-872.
    2. Bi, Tianjiao & Wu, Zhanghua & Zhang, Limin & Yu, Guoyao & Luo, Ercang & Dai, Wei, 2017. "Development of a 5kW traveling-wave thermoacoustic electric generator," Applied Energy, Elsevier, vol. 185(P2), pages 1355-1361.
    3. Li, Linyu & Wu, Zhanghua & Hu, Jianying & Yu, Guoyao & Luo, Ercang & Dai, Wei, 2016. "A novel heat-driven thermoacoustic natural gas liquefaction system. Part I: Coupling between refrigerator and linear motor," Energy, Elsevier, vol. 117(P2), pages 523-529.
    4. Hamood, Ahmed & Jaworski, Artur J. & Mao, Xiaoan & Simpson, Kevin, 2018. "Design and construction of a two-stage thermoacoustic electricity generator with push-pull linear alternator," Energy, Elsevier, vol. 144(C), pages 61-72.
    5. Hu, J.Y. & Luo, E.C. & Zhang, L.M. & Chen, Y.Y. & Wu, Z.H. & Gao, B., 2018. "Analysis of a displacer-coupled multi-stage thermoacoustic-Stirling engine," Energy, Elsevier, vol. 145(C), pages 507-514.
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    Citations

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    Cited by:

    1. Umar Nawaz Bhatti & Salem Bashmal & Sikandar Khan & Rached Ben-Mansour, 2020. "Numerical Modeling and Performance Evaluation of Standing Wave Thermoacoustic Refrigerators with a Multi-Layered Stack," Energies, MDPI, vol. 13(17), pages 1-25, August.
    2. Chen, Geng & Tang, Lihua & Mace, Brian & Yu, Zhibin, 2021. "Multi-physics coupling in thermoacoustic devices: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 146(C).
    3. Artur J. Jaworski, 2019. "Special Issue “Fluid Flow and Heat Transfer”," Energies, MDPI, vol. 12(16), pages 1-4, August.
    4. Hamood, Ahmed & Jaworski, Artur J., 2023. "Thermoacoustic cascade engine free from resonance length," Energy, Elsevier, vol. 271(C).

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