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Thermodynamic Optimization of Trigeneration Power System

Author

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  • Ladislao Eduardo Méndez-Cruz

    (Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana—Cuajimalpa, Av. Vasco de Quiroga No. 4871, Colonia Santa Fé, Cuajimalpa, Mexico City 05348, Mexico)

  • Miguel-Ángel Gutiérrez-Limón

    (Departamento de Energía, Universidad Autónoma Metropolitana—Azcapotzalco, Av. San Pablo No. 180, Colonia Reynosa Tamaulipas, Azcapotzalco, Mexico City 02200, Mexico)

  • Raúl Lugo-Leyte

    (Departamento de Ingeniería de Procesos e Hidráulica, Universidad Autónoma Metropolitana—Iztapalapa, Av. Ferrocarril San Rafael Atlixco No. 186, Colonia Leyes de Reforma 1ª Sección, Iztapalapa, Mexico City 09340, Mexico)

  • Mauricio Sales-Cruz

    (Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana—Cuajimalpa, Av. Vasco de Quiroga No. 4871, Colonia Santa Fé, Cuajimalpa, Mexico City 05348, Mexico)

Abstract

Worldwide, the growing demand for energy has been largely met through power cycles utilizing fossil fuels. Combined cycles, which integrate a gas turbine with a steam cycle, prove to be the best alternative due to their power generation capacity and high efficiencies. This efficiency is primarily attributed to the ability to harness exhaust gases to generate steam in the heat recovery boiler, allowing additional power generation through the steam turbine. Currently, there is a quest for the integration of low-temperature power cycles to maximize the utilization of residual thermal energy flows for power generation. Therefore, this work conducts an exergetic optimization of a power trigeneration system aimed at maximizing exergetic efficiency. This system includes a gas turbine and a steam cycle coupled with three different configurations of the Organic Rankine Cycle (ORC): a simple ORC, a supercritical ORC, and an ultracritical ORC. The ORC configurations are analyzed using eight organic working fluids, namely R1234yf, R290, R134a, R1234ze, R152a, R600a, R245fa, and R123. The results show that the maximum exergetic efficiency is achieved by using R152a in the ultracritical ORC configuration coupled with the combined cycle, achieving an exergetic efficiency of 55.79%. Furthermore, the maximum power generated is attained by the steam cycle with 85,600.63 kW and 3101.21 kW for the ultracritical ORC.

Suggested Citation

  • Ladislao Eduardo Méndez-Cruz & Miguel-Ángel Gutiérrez-Limón & Raúl Lugo-Leyte & Mauricio Sales-Cruz, 2024. "Thermodynamic Optimization of Trigeneration Power System," Energies, MDPI, vol. 17(12), pages 1-21, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:12:p:3048-:d:1418905
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    References listed on IDEAS

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    1. Bakhshmand, Sina Kazemi & Saray, Rahim Khoshbakhti & Bahlouli, Keyvan & Eftekhari, Hajar & Ebrahimi, Afshin, 2015. "Exergoeconomic analysis and optimization of a triple-pressure combined cycle plant using evolutionary algorithm," Energy, Elsevier, vol. 93(P1), pages 555-567.
    2. Wang, Jiangfeng & Yan, Zhequan & Wang, Man & Ma, Shaolin & Dai, Yiping, 2013. "Thermodynamic analysis and optimization of an (organic Rankine cycle) ORC using low grade heat source," Energy, Elsevier, vol. 49(C), pages 356-365.
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