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Innovation in an Existing Backpressure Turbine for Ensure Better Sustainability and Flexible Operation

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  • Aleš Hromádka

    (Regional Innovation Centre for Electrical Engineering, Faculty of Electrical Engineering, University of West Bohemia, Univerzitní str. 2732/8, 306 14 Pilsen, Czech Republic
    Department of Electric Power Engineering and Ecology, Faculty of Electrical Engineering, University of West Bohemia, Univerzitní str. 2732/8, 306 14 Pilsen, Czech Republic)

  • Martin Sirový

    (Regional Innovation Centre for Electrical Engineering, Faculty of Electrical Engineering, University of West Bohemia, Univerzitní str. 2732/8, 306 14 Pilsen, Czech Republic)

  • Zbyněk Martínek

    (Department of Electric Power Engineering and Ecology, Faculty of Electrical Engineering, University of West Bohemia, Univerzitní str. 2732/8, 306 14 Pilsen, Czech Republic)

Abstract

Cogeneration power plants have already been operated in the Czech Republic for several decades. These cogeneration power plants have been mostly operated with original technologies. However, these original technologies have to be continuously innovated during the entire operation time. This paper is focused on one of the possible innovations, which could lead to better sustainability and improved flexibility of the cogeneration power plants. Backpressure turbines are still used in many cogeneration power plants. However, backpressure turbines are currently losing suitability for cogeneration power plants, because they always need sufficient heat demand for optimal operation. Backpressure turbines rapidly lose efficiency when facing a lack of heat demand, i.e., mostly in summer season. Currently, condensing turbines are a preferable option for cogeneration power plants, which generally achieve less effective operation, as condensing turbines are able to operate with optional heat demand. Therefore, backpressure turbines are often replaced by condensing turbines with regulated outputs. In spite of the current trend, this article will present an innovative topology, which retains the original backpressure turbine with the addition of the organic Rankine cycle for residual energy utilization.

Suggested Citation

  • Aleš Hromádka & Martin Sirový & Zbyněk Martínek, 2019. "Innovation in an Existing Backpressure Turbine for Ensure Better Sustainability and Flexible Operation," Energies, MDPI, vol. 12(14), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2652-:d:247293
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    References listed on IDEAS

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    1. Shengjun, Zhang & Huaixin, Wang & Tao, Guo, 2011. "Performance comparison and parametric optimization of subcritical Organic Rankine Cycle (ORC) and transcritical power cycle system for low-temperature geothermal power generation," Applied Energy, Elsevier, vol. 88(8), pages 2740-2754, August.
    2. Luo, Xing & Wang, Jihong & Dooner, Mark & Clarke, Jonathan, 2015. "Overview of current development in electrical energy storage technologies and the application potential in power system operation," Applied Energy, Elsevier, vol. 137(C), pages 511-536.
    3. Saleh, Bahaa & Koglbauer, Gerald & Wendland, Martin & Fischer, Johann, 2007. "Working fluids for low-temperature organic Rankine cycles," Energy, Elsevier, vol. 32(7), pages 1210-1221.
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    Cited by:

    1. Jovana Radulovic, 2023. "Organic Rankine Cycle: Effective Applications and Technological Advances," Energies, MDPI, vol. 16(5), pages 1-3, February.
    2. Kim, Jungwan & Ha, Yunseok & Zahorulko, Andriy & Lee, Yongbok, 2021. "Performance assessments and simulations of ROT (radial outflow turbine) for back-pressure turbine generator system," Energy, Elsevier, vol. 228(C).

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