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Wankel engines as steam expanders: Design considerations

Author

Listed:
  • Badr, O.
  • Naik, S.
  • O'Callaghan, P. W.
  • Probert, S. D.

Abstract

Rotary Wankel engines offer several advantages compared with turbines and other positive-displacement machines as the expansion devices in low-power-output Rankine-cycle systems. So a Wankel expander was selected as the most appropriate device for a steam Rankine-engine, operating principally as a mini combined heat-and-power unit, providing a mechanical output of 5-20 kW. A computer-aided-design technique for selecting the optimal geometry and location of the ports of the expander is described: the computer programs are available from the authors. Lubrication and possible material combinations are also discussed.

Suggested Citation

  • Badr, O. & Naik, S. & O'Callaghan, P. W. & Probert, S. D., 1991. "Wankel engines as steam expanders: Design considerations," Applied Energy, Elsevier, vol. 40(3), pages 157-170.
    • Handle: RePEc:eee:appene:v:40:y:1991:i:3:p:157-170
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    Cited by:

    1. Francesconi, M. & Caposciutti, G. & Antonelli, M., 2018. "An experimental and numerical analysis of the performances of a Wankel steam expander," Energy, Elsevier, vol. 164(C), pages 615-626.
    2. Marcin Wołowicz & Piotr Kolasiński & Krzysztof Badyda, 2021. "Modern Small and Microcogeneration Systems—A Review," Energies, MDPI, vol. 14(3), pages 1-47, February.
    3. Francesconi, Marco & Antonelli, Marco, 2017. "A numerical model for the prediction of the fluid dynamic and mechanical losses of a Wankel-type expansion device," Applied Energy, Elsevier, vol. 205(C), pages 225-235.
    4. Zeb, K. & Ali, S.M. & Khan, B. & Mehmood, C.A. & Tareen, N. & Din, W. & Farid, U. & Haider, A., 2017. "A survey on waste heat recovery: Electric power generation and potential prospects within Pakistan," Renewable and Sustainable Energy Reviews, Elsevier, vol. 75(C), pages 1142-1155.
    5. Yang, Jinxin & Ji, Changwei & Wang, Shuofeng & Wang, Du & Ma, Zedong & Zhang, Boya, 2018. "Numerical investigation on the mixture formation and combustion processes of a gasoline rotary engine with direct injected hydrogen enrichment," Applied Energy, Elsevier, vol. 224(C), pages 34-41.
    6. Antonelli, Marco & Martorano, Luigi, 2012. "A study on the rotary steam engine for distributed generation in small size power plants," Applied Energy, Elsevier, vol. 97(C), pages 642-647.
    7. Antonelli, M. & Baccioli, A. & Francesconi, M. & Desideri, U. & Martorano, L., 2014. "Operating maps of a rotary engine used as an expander for micro-generation with various working fluids," Applied Energy, Elsevier, vol. 113(C), pages 742-750.
    8. Antonelli, M. & Baccioli, A. & Francesconi, M. & Desideri, U. & Martorano, L., 2015. "Electrical production of a small size Concentrated Solar Power plant with compound parabolic collectors," Renewable Energy, Elsevier, vol. 83(C), pages 1110-1118.

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