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Article

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

1
Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52441 Jülich, Germany
2
Department of Mechanical Engineering, University of Guanajuato, Salamanca 36800, Mexico
3
CIRCE Institute, Universidad de Zaragoza, 50018 Zaragoza, Spain
4
Department of Electrical Engineering, University of Guanajuato, Salamanca 36800, Mexico
*
Author to whom correspondence should be addressed.
Energies 2019, 12(18), 3476; https://doi.org/10.3390/en12183476
Received: 6 July 2019 / Revised: 2 September 2019 / Accepted: 6 September 2019 / Published: 9 September 2019
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. View Full-Text
Keywords: exergy cost; SOFC; absorption system; irreversibility exergy cost; SOFC; absorption system; irreversibility
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MDPI and ACS Style

Rangel-Hernandez, V.H.; Torres, C.; Zaleta-Aguilar, A.; Gomez-Martinez, M.A. 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 2019, 12, 3476. https://doi.org/10.3390/en12183476

AMA Style

Rangel-Hernandez VH, Torres C, Zaleta-Aguilar A, Gomez-Martinez MA. 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. 2019; 12(18):3476. https://doi.org/10.3390/en12183476

Chicago/Turabian Style

Rangel-Hernandez, V. H., C. Torres, A. Zaleta-Aguilar, and 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 12, no. 18: 3476. https://doi.org/10.3390/en12183476

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