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Design Analysis of Micro Gas Turbines in Closed Cycles

Author

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  • Krzysztof Kosowski

    (Faculty of Mechanical Engineering, Gdansk University of Technology, Gabriela Narutowicza Street 11/12, 80-233 Gdansk, Poland)

  • Marian Piwowarski

    (Faculty of Mechanical Engineering, Gdansk University of Technology, Gabriela Narutowicza Street 11/12, 80-233 Gdansk, Poland)

Abstract

The problems faced by designers of micro-turbines are connected with a very small volume flow rate of working media which leads to small blade heights and a high rotor speed. In the case of gas turbines this limitation can be overcome by the application of a closed cycle with very low pressure at the compressor inlet (lower than atmospheric pressure). In this way we may apply a micro gas turbine unit of accepted efficiency to work in a similar range of temperatures and the same pressure ratios, but in the range of smaller pressure values and smaller mass flow rate. Thus, we can obtain a gas turbine of a very small output but of the efficiency typical of gas turbines with a much higher power. In this paper, the results of the thermodynamic calculations of the turbine cycles are discussed and the designed gas turbine flow parts are presented. Suggestions of the design solutions of micro gas turbines for different values of power output are proposed. This new approach to gas turbine arrangement makes it possible to build a gas turbine unit of a very small output and a high efficiency. The calculations of cycle and gas turbine design were performed for different cycle parameters and different working media (air, nitrogen, hydrogen, helium, xenon and carbon dioxide).

Suggested Citation

  • Krzysztof Kosowski & Marian Piwowarski, 2020. "Design Analysis of Micro Gas Turbines in Closed Cycles," Energies, MDPI, vol. 13(21), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5790-:d:440320
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    References listed on IDEAS

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    1. Kunniyoor, Vijayaraj & Singh, Punit & Nadella, Karthik, 2020. "Value of closed-cycle gas turbines with design assessment," Applied Energy, Elsevier, vol. 269(C).
    2. Dariusz Mikielewicz & Krzysztof Kosowski & Karol Tucki & Marian Piwowarski & Robert Stępień & Olga Orynycz & Wojciech Włodarski, 2019. "Gas Turbine Cycle with External Combustion Chamber for Prosumer and Distributed Energy Systems," Energies, MDPI, vol. 12(18), pages 1-19, September.
    3. Cozzolino, Raffaello & Lombardi, Lidia & Tribioli, Laura, 2017. "Use of biogas from biowaste in a solid oxide fuel cell stack: Application to an off-grid power plant," Renewable Energy, Elsevier, vol. 111(C), pages 781-791.
    4. Herrando, María & Pantaleo, Antonio M. & Wang, Kai & Markides, Christos N., 2019. "Solar combined cooling, heating and power systems based on hybrid PVT, PV or solar-thermal collectors for building applications," Renewable Energy, Elsevier, vol. 143(C), pages 637-647.
    5. Dariusz Mikielewicz & Krzysztof Kosowski & Karol Tucki & Marian Piwowarski & Robert Stępień & Olga Orynycz & Wojciech Włodarski, 2019. "Influence of Different Biofuels on the Efficiency of Gas Turbine Cycles for Prosumer and Distributed Energy Power Plants," Energies, MDPI, vol. 12(16), pages 1-21, August.
    6. Saadabadi, S. Ali & Thallam Thattai, Aditya & Fan, Liyuan & Lindeboom, Ralph E.F. & Spanjers, Henri & Aravind, P.V., 2019. "Solid Oxide Fuel Cells fuelled with biogas: Potential and constraints," Renewable Energy, Elsevier, vol. 134(C), pages 194-214.
    7. Thu, Kyaw & Saha, Bidyut Baran & Chua, Kian Jon & Bui, Thuan Duc, 2016. "Thermodynamic analysis on the part-load performance of a microturbine system for micro/mini-CHP applications," Applied Energy, Elsevier, vol. 178(C), pages 600-608.
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    Cited by:

    1. Roberta De Robbio, 2023. "Micro Gas Turbine Role in Distributed Generation with Renewable Energy Sources," Energies, MDPI, vol. 16(2), pages 1-37, January.
    2. Marcin Jamróz & Marian Piwowarski & Paweł Ziemiański & Gabriel Pawlak, 2021. "Technical and Economic Analysis of the Supercritical Combined Gas-Steam Cycle," Energies, MDPI, vol. 14(11), pages 1-21, May.
    3. Anthony O. Onokwai & Udochukwu B. Akuru & Dawood A. Desai, 2025. "Mathematical Modelling and Optimisation of Operating Parameters for Enhanced Energy Generation in Gas Turbine Power Plant with Intercooler," Mathematics, MDPI, vol. 13(1), pages 1-39, January.

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