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The impact of changes in the geometry of a radial microturbine stage on the efficiency of the micro CHP plant based on ORC

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  • Kaczmarczyk, Tomasz Z.
  • Żywica, Grzegorz
  • Ihnatowicz, Eugeniusz

Abstract

The overall efficiency of ORC systems depends on a number of factors, but it goes without saying that the efficiency of the expansion device is one of the most important ones. The article presents the impact of modernization of the first stator stage of a micro turbogenerator on the following efficiencies: exergetic efficiency, Carnot efficiency, microturbine internal efficiency and ORC cycle efficiency. The thermal and flow characteristics for three heat exchangers (i.e. condenser, evaporator and regenerator) were shown. The paper also includes the graphs presenting the current, voltage and electric power generated by the turbogenerator during its operation in the organic Rankine cycle with regeneration. A low-boiling fluid was used as the working medium. During the research, vibration measurements were carried out on the casing of a vapour microturbine. They aimed at monitoring the machine operation so as to detect any dynamic problems (e.g. defects or malfunction). The measurement results in the form of RMS vibration velocity levels were presented and discussed.

Suggested Citation

  • Kaczmarczyk, Tomasz Z. & Żywica, Grzegorz & Ihnatowicz, Eugeniusz, 2017. "The impact of changes in the geometry of a radial microturbine stage on the efficiency of the micro CHP plant based on ORC," Energy, Elsevier, vol. 137(C), pages 530-543.
    • Handle: RePEc:eee:energy:v:137:y:2017:i:c:p:530-543
    DOI: 10.1016/j.energy.2017.05.166
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    References listed on IDEAS

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    3. Kruk-Gotzman, Sylwia & Ziółkowski, Paweł & Iliev, Iliya & Negreanu, Gabriel-Paul & Badur, Janusz, 2023. "Techno-economic evaluation of combined cycle gas turbine and a diabatic compressed air energy storage integration concept," Energy, Elsevier, vol. 266(C).
    4. Liaw, Kim Leong & Kurnia, Jundika C. & Lai, Wen Kang & Ong, Khai Chuin & Zar, Muhammad Aliff B. Mohd Ali & Muhammad, M. Fadhli B. & Firmansyah,, 2023. "Optimization of a novel impulse gas turbine nozzle and blades design utilizing Taguchi method for micro-scale power generation," Energy, Elsevier, vol. 282(C).
    5. Józef Rak & Przemysław Błasiak & Piotr Kolasiński, 2018. "Influence of the Applied Working Fluid and the Arrangement of the Steering Edges on Multi-Vane Expander Performance in Micro ORC System," Energies, MDPI, vol. 11(4), pages 1-16, April.
    6. Fershalov, A. Yu & Fershalov, Yu. Ya & Fershalov, M. Yu, 2021. "Principles of designing gas microturbine stages," Energy, Elsevier, vol. 218(C).
    7. Witanowski, Łukasz & Klonowicz, Piotr & Lampart, Piotr & Klimaszewski, Piotr & Suchocki, Tomasz & Jędrzejewski, Łukasz & Zaniewski, Dawid & Ziółkowski, Paweł, 2023. "Impact of rotor geometry optimization on the off-design ORC turbine performance," Energy, Elsevier, vol. 265(C).
    8. Witanowski, Ł. & Klonowicz, P. & Lampart, P. & Suchocki, T. & Jędrzejewski, Ł. & Zaniewski, D. & Klimaszewski, P., 2020. "Optimization of an axial turbine for a small scale ORC waste heat recovery system," Energy, Elsevier, vol. 205(C).
    9. Montazerinejad, H. & Eicker, U., 2022. "Recent development of heat and power generation using renewable fuels: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 165(C).
    10. Zaniewski, Dawid & Klimaszewski, Piotr & Klonowicz, Piotr & Lampart, Piotr & Witanowski, Łukasz & Jędrzejewski, Łukasz & Suchocki, Tomasz & Antczak, Łukasz, 2021. "Performance of the honeycomb type sealings in organic vapour microturbines," Energy, Elsevier, vol. 226(C).
    11. Badur, Janusz & Lemański, Marcin & Kowalczyk, Tomasz & Ziółkowski, Paweł & Kornet, Sebastian, 2018. "Zero-dimensional robust model of an SOFC with internal reforming for hybrid energy cycles," Energy, Elsevier, vol. 158(C), pages 128-138.
    12. Konečná, Eva & Teng, Sin Yong & Máša, Vítězslav, 2020. "New insights into the potential of the gas microturbine in microgrids and industrial applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    13. Lund, Henrik & Duic, Neven & Østergaard, Poul Alberg & Mathiesen, Brian Vad, 2018. "Future district heating systems and technologies: On the role of smart energy systems and 4th generation district heating," Energy, Elsevier, vol. 165(PA), pages 614-619.

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