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A Stirling generator with multiple bypass expansion for variable-temperature waste heat recovery

Author

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  • Jiang, Zhijie
  • Xu, Jingyuan
  • Yu, Guoyao
  • Yang, Rui
  • Wu, Zhanghua
  • Hu, Jianying
  • Zhang, Limin
  • Luo, Ercang

Abstract

Recovery heat from exhaust gas is a promising field in the context of global deepening of energy conservation and emission reduction. Small scale and cascade temperature variation make the exhaust gas waste heat recovery difficult. In order to make full use of the exhaust gas waste heat, a novel Stirling generator with a multiple-bypass configuration is proposed to fulfill the demand for recovery over a wide and continue temperature range. The exhaust gas is simplified into variable-temperature heat resource (VTHS, heat release accompanied by a decrease in temperature) and the cascade heat exchangers in the proposed system are assumed to converse heat with VTHS absorption continuously. In this paper, the ideal power efficiency of an infinite-stage generator is calculated. Then, a model of a 3-stage Stirling generator is established in software Sage. Theoretical analyses, exergy analyses and parameters analyses are carried out. The performance comparison between single-stage, 2-stage and 3-stage is presented at last. The result represents a significant increase by 29.3% in electric power when compared to the traditional single-stage system. These findings suggest a novel promising energy conversion technology for cascade utilization of exhaust gas waste heat.

Suggested Citation

  • Jiang, Zhijie & Xu, Jingyuan & Yu, Guoyao & Yang, Rui & Wu, Zhanghua & Hu, Jianying & Zhang, Limin & Luo, Ercang, 2023. "A Stirling generator with multiple bypass expansion for variable-temperature waste heat recovery," Applied Energy, Elsevier, vol. 329(C).
    • Handle: RePEc:eee:appene:v:329:y:2023:i:c:s0306261922014994
    DOI: 10.1016/j.apenergy.2022.120242
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    References listed on IDEAS

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    Cited by:

    1. Xinchen Zhou & Xiang Xu & Jiping Huang, 2023. "Adaptive multi-temperature control for transport and storage containers enabled by phase-change materials," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    2. Vojtěch Turek & Bohuslav Kilkovský & Ján Daxner & Dominika Babička Fialová & Zdeněk Jegla, 2024. "Industrial Waste Heat Utilization in the European Union—An Engineering-Centric Review," Energies, MDPI, vol. 17(9), pages 1-27, April.
    3. Luo, Baojun & Xiang, Quanwei & Su, Xiaoxue & Zhang, Shunfeng & Yan, Piaopiao & Liu, Jingping & Li, Ruijie, 2024. "A novel cycle engine for low-grade heat utilization: Principle, conceptual design and thermodynamic analysis," Energy, Elsevier, vol. 301(C).
    4. Xiao, Wang & Chen, Lei & Yu, Guoyao & Ma, Zhuang & Ma, Ying & Xue, Jianhua & Cheng, Yangbin & Luo, Ercang, 2024. "Design and experimental study of a 300 We class combustion-driven high frequency free-piston Stirling electric generator," Energy, Elsevier, vol. 300(C).
    5. Xiao, Lei & Luo, Kaiqi & Hu, Jianying & Jia, Zilong & Chen, Geng & Xu, Jingyuan & Luo, Ercang, 2023. "Transient and steady performance analysis of a free-piston Stirling generator," Energy, Elsevier, vol. 273(C).

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