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Exergoeconomic Analysis of a Triple-Level Pressure Combined Cycle With Supplementary Firing

[+] Author Affiliations
Edgar Vicente Torres González, Raúl Lugo Leyte, Juan José Ambriz García

Universidad Autónoma Metropolitana - Iztapalapa, Mexico City, Mexico

Helen Denise Lugo Méndez

Universidad Autónoma Metropolitana - Cuajimalpa, Mexico City, Mexico

Martín Salazar Pereyra

Tecnológico de Estudios Superiores de Ecatepec, Ecatepec, Mexico

Paper No. GT2018-76989, pp. V003T08A008; 12 pages
doi:10.1115/GT2018-76989
From:
  • ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition
  • Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems
  • Oslo, Norway, June 11–15, 2018
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5104-3
  • Copyright © 2018 by ASME

abstract

One of the ways to make an efficient use of energy resources is to generate power from combined cycle power plants. Besides, the implementation of supplementary firing in a combined cycle plant helps to increase its generated power. In addition, the exergoeconomic analysis is pursued by 1) carrying out a systematic approach, based on the Fuel-Product methodology, in each component of the system; and 2) generating a set of equations, which allows compute the exergetic and exergoeconomic costs of each flow. For this analysis, the environmental conditions correspond 25 °C, 1.013 bar and 45 % relative humidity. Therefore, in this work an exergoeconomic analysis of a triple-level pressure combined cycle with a 2 × 2 × 1 arrangement with and without supplementary firing is performed, so the combined cycle with supplementary firing generates 484.62 MW and has a power relation between the gas turbine cycle and steam turbine cycle of 1.35:1. Meanwhile, the combined cycle without supplementary firing generates 427.25 MW with a power ratio of the gas turbine cycle and steam turbine cycle of 1.87:1.

Copyright © 2018 by ASME

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