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Main Title: On the Potential of Power Generation from Thermoelectric Generators in Gas Turbine Combustors
Author(s): Stathopoulos, Panagiotis
Fernàndez-Villa, Javier
Type: Article
Language Code: en
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.
Issue Date: 16-Oct-2018
Date Available: 8-Nov-2018
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): thermoelectric oxide generator
gas turbine
combustor cooling
combined cycle
hybrid energy conversion
Sponsor/Funder: DFG, TH 662/19-1, Open Access Publizieren 2017 - 2018 / Technische Universität Berlin
Journal Title: Energies
Publisher: MDPI
Publisher Place: Basel
Volume: 11
Issue: 10
Article Number: 2769
Publisher DOI: 10.3390/en11102769
EISSN: 1996-1073
Appears in Collections:FG Thermodynamik in dynamischen Gasturbinenprozessen » Publications

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