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The Exergy Costs of Electrical Power, Cooling, and Waste Heat from a Hybrid System Based on a Solid Oxide Fuel Cell and an Absorption Refrigeration System

Author

Listed:
  • V. H. Rangel-Hernandez

    (Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52441 Jülich, Germany
    Department of Mechanical Engineering, University of Guanajuato, Salamanca 36800, Mexico)

  • C. Torres

    (CIRCE Institute, Universidad de Zaragoza, 50018 Zaragoza, Spain)

  • A. Zaleta-Aguilar

    (Department of Mechanical Engineering, University of Guanajuato, Salamanca 36800, Mexico)

  • M. A. Gomez-Martinez

    (Department of Electrical Engineering, University of Guanajuato, Salamanca 36800, Mexico)

Abstract

This paper applies the Exergy Cost Theory (ECT) to a hybrid system based on a 500 kWe solid oxide fuel cell (SOFC) stack and on a vapor-absorption refrigeration (VAR) system. To achieve this, a model comprised of chemical, electrochemical, thermodynamic, and thermoeconomic equations is developed using the software, Engineering Equation Solver (EES). The model is validated against previous works. This approach enables the unit exergy costs (electricity, cooling, and residues) to be computed by a productive structure defined by components, resources, products, and residues. Most importantly, it allows us to know the contribution of the environment and of the residues to the unit exergy cost of the product of the components. Finally, the simulation of different scenarios makes it possible to analyze the impact of stack current density, fuel use, temperature across the stack, and anode gas recirculation on the unit exergy costs of electrical power, cooling, and residues.

Suggested Citation

  • V. H. Rangel-Hernandez & C. Torres & A. Zaleta-Aguilar & M. A. Gomez-Martinez, 2019. "The Exergy Costs of Electrical Power, Cooling, and Waste Heat from a Hybrid System Based on a Solid Oxide Fuel Cell and an Absorption Refrigeration System," Energies, MDPI, vol. 12(18), pages 1-15, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:18:p:3476-:d:265538
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    References listed on IDEAS

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    Cited by:

    1. César Torres & Antonio Valero, 2021. "The Exergy Cost Theory Revisited," Energies, MDPI, vol. 14(6), pages 1-42, March.
    2. Tomasz A. Prokop & Katarzyna Berent & Marcin Mozdzierz & Janusz S. Szmyd & Grzegorz Brus, 2019. "A Three-Dimensional Microstructure-Scale Simulation of a Solid Oxide Fuel Cell Anode—The Analysis of Stack Performance Enhancement After a Long-Term Operation," Energies, MDPI, vol. 12(24), pages 1-16, December.
    3. Tian-Tian Li & Yun-Ze Li & Zhuang-Zhuang Zhai & En-Hui Li & Tong Li, 2019. "Energy-Saving Strategies and their Energy Analysis and Exergy Analysis for In Situ Thermal Remediation System of Polluted-Soil," Energies, MDPI, vol. 12(20), pages 1-28, October.

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