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On the Potential of Power Generation from Thermoelectric Generators in Gas Turbine Combustors

Author

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  • Panagiotis Stathopoulos

    (Hermann Föttinger Institute, Technische Universität Berlin, Müller Breslau Str. 8, 10623 Berlin, Germany)

  • Javier Fernàndez-Villa

    (Hermann Föttinger Institute, Technische Universität Berlin, Müller Breslau Str. 8, 10623 Berlin, Germany)

Abstract

Thermoelectric generators (TEGs) offer an attractive power generation option. They have no moving parts, are robust and emit no pollutants. The current work explores the integration of high temperature TEGs in gas turbine combustors. The latter have a thermal shield at their inner surface to protect them against high temperatures. This is supplemented by convective and film cooling. This work studies the replacement of the thermal shield with high temperature TEGs and evaluates their techno-economic potential. A gas turbine model is developed and validated to compute the fuel and air flow rate in the combustion chamber. A heat transfer model is subsequently implemented to compute the temperature distribution inside the combustor wall, on which the TEG is constructed. The investment in TEGs is then analyzed for peaker, intermediate load and base load gas turbines. The work concludes with a sensitivity analysis of the investment economic performance. It is concluded that, despite the low power generation, the installation of TEGs makes economic sense, even if their price becomes 50% higher than current estimations. It is also concluded that electricity prices have a much stronger effect on the economic viability of the investment than the price of the generators.

Suggested Citation

  • Panagiotis Stathopoulos & Javier Fernàndez-Villa, 2018. "On the Potential of Power Generation from Thermoelectric Generators in Gas Turbine Combustors," Energies, MDPI, vol. 11(10), pages 1-21, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2769-:d:175951
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    References listed on IDEAS

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    1. Benday, Naman S. & Dryden, Daniel M. & Kornbluth, Kurt & Stroeve, Pieter, 2017. "A temperature-variant method for performance modeling and economic analysis of thermoelectric generators: Linking material properties to real-world conditions," Applied Energy, Elsevier, vol. 190(C), pages 764-771.
    2. Sensfuß, Frank & Ragwitz, Mario & Genoese, Massimo, 2007. "The merit-order effect: a detailed analysis of the price effect of renewable electricity generation on spot market prices in Germany," Working Papers "Sustainability and Innovation" S7/2007, Fraunhofer Institute for Systems and Innovation Research (ISI).
    3. LeBlanc, Saniya & Yee, Shannon K. & Scullin, Matthew L. & Dames, Chris & Goodson, Kenneth E., 2014. "Material and manufacturing cost considerations for thermoelectrics," Renewable and Sustainable Energy Reviews, Elsevier, vol. 32(C), pages 313-327.
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    Cited by:

    1. Jing-Hui Meng & Hao-Chi Wu & Tian-Hu Wang, 2019. "Optimization of Two-Stage Combined Thermoelectric Devices by a Three-Dimensional Multi-Physics Model and Multi-Objective Genetic Algorithm," Energies, MDPI, vol. 12(14), pages 1-24, July.
    2. Stathopoulos, Panagiotis & Rähse, Tim & Vinkeloe, Johann & Djordjevic, Neda, 2019. "Steam injected Humphrey cycle for gas turbines with pressure gain combustion," Energy, Elsevier, vol. 188(C).
    3. Stathopoulos, Panagiotis & Rähse, Tim & Vinkeloe, Johann & Djordjevic, Neda, 2020. "First law thermodynamic analysis of the recuperated humphrey cycle for gas turbines with pressure gain combustion," Energy, Elsevier, vol. 200(C).

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