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On the Application of Small-Scale Turbines in Industrial Steam Networks

Author

Listed:
  • Ansgar Weickgenannt

    (EPFL-LAMD, Rue Maladière 71b, 2002 Neuchâtel, Switzerland
    These authors contributed equally to this work.)

  • Ivan Kantor

    (EPFL-IPESE, Rue de l’Industrie 17, 1951 Sion, Switzerland
    HES-SO Valais-Wallis, 1950 Sion, Switzerland
    These authors contributed equally to this work.)

  • François Maréchal

    (EPFL-IPESE, Rue de l’Industrie 17, 1951 Sion, Switzerland)

  • Jürg Schiffmann

    (EPFL-LAMD, Rue Maladière 71b, 2002 Neuchâtel, Switzerland)

Abstract

This study investigates the technical and economic feasibility of replacing throttling valves with smale-scale, oil-free turbomachinery in industrial steam networks. This is done from the perspective of the turbomachine, which has to be integrated into a new or existing process. The considered machines have a power range of P = [ 0.5 , … , 250 kW] and have been designed using real industrial data from existing processes. Design guidelines are developed, which take into account the thermodynamic process as well as engineering aspects of such a turbomachine. The results suggest that steam conditioning prior to heat exchange could be completed by small expanders to produce mechanical work, reducing exergy destruction and improving site-wide energy efficiency compared to throttling valves. Cost estimates for such machines are presented, which serve as a basis for case-specific investment calculations. The resulting payback times of less than 18 months highlight the economic potential such solutions.

Suggested Citation

  • Ansgar Weickgenannt & Ivan Kantor & François Maréchal & Jürg Schiffmann, 2021. "On the Application of Small-Scale Turbines in Industrial Steam Networks," Energies, MDPI, vol. 14(11), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:11:p:3149-:d:563986
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    References listed on IDEAS

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    1. Wagner, Patrick Hubert & Wuillemin, Zacharie & Constantin, David & Diethelm, Stefan & Van herle, Jan & Schiffmann, Jürg, 2020. "Experimental characterization of a solid oxide fuel cell coupled to a steam-driven micro anode off-gas recirculation fan," Applied Energy, Elsevier, vol. 262(C).
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    Cited by:

    1. Olmedo, L.E. & Schiffmann, J., 2023. "Towards a real-time capable hybrid-twin for gas-bearing supported high-speed turbocompressors," Energy, Elsevier, vol. 275(C).
    2. Keivan Rahimi-Adli & Egidio Leo & Benedikt Beisheim & Sebastian Engell, 2021. "Optimisation of the Operation of an Industrial Power Plant under Steam Demand Uncertainty," Energies, MDPI, vol. 14(21), pages 1-28, November.
    3. Miroslav Variny & Kristián Hanus & Marek Blahušiak & Patrik Furda & Peter Illés & Ján Janošovský, 2021. "Energy and Environmental Assessment of Steam Management Optimization in an Ethylene Plant," IJERPH, MDPI, vol. 18(22), pages 1-17, November.

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