Advanced Exergy Analysis of an Integrated SOFC-Adsorption Refrigeration Power System

Rangel-Hernández, V.H.; Niño-Avendaño, A.M.; Ramírez-Minguela, J.J.; Belman-Flores, J.M.; Elizalde‐Blancas, Francisco

doi:10.5772/intechopen.74201

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…The exergy efficiencies of the main components of the system calculations are based on the second law of thermodynamics. Table 2 demonstrates the equilibrium relationship of the exergy destruction of the main components [38,[47][48][49][50]. Ex des (44) The overall energy and exergy efficiencies for the entire integrated system are written as [17,19,51]:…”

Section: Exergy Efficiency Of the Main Componentsmentioning

confidence: 99%

Energy and Exergy Analysis of an Ammonia Fuel Cell Integrated System for Marine Vessels

et al. 2022

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In this paper, a new integrated system of solid oxide fuel cell (SOFC)–gas turbine (GT)–steam Rankine cycle (SRC)–exhaust gas boiler (EGB) is presented, in which ammonia is introduced as a promising fuel source to meet shipping decarbonization targets. For this purpose, an SOFC is presented as the main power-generation source for a specific marine propulsion plant; the GT and SRC provide auxiliary power for machinery and accommodation lighting, and steam from the waste heat boiler is used for heating seafarer accommodation. The combined system minimizes waste heat and converts it into useful work and power. Energy and exergy analyses are performed based on the first and second laws of thermodynamics. A parametric study of the effects of the variation in the SOFC current density, fuel utilization factor, superheat temperature, and SRC evaporation pressure is conducted to define the optimal operating parameters for the proposed system. In the present study, the energy and exergy efficiencies of the integrated system are 64.49% and 61.10%, respectively. These results serve as strong motivation for employing an EGB and SRC for waste heat recovery and increasing the overall energy-conversion efficiency of the system. The SRC energy and exergy efficiencies are 25.58% and 41.21%, respectively.

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Section: Exergy Efficiency Of the Main Componentsmentioning

confidence: 99%

Energy and Exergy Analysis of an Ammonia Fuel Cell Integrated System for Marine Vessels

et al. 2022

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Comparative Study of Thermodynamic Performances: Ammonia vs. Methanol SOFC for Marine Vessels

Duong,

Ryu,

Nam

et al. 2024

Chem Eng & Technol

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In response to escalating environmental concerns and the imperative to institute effective energy management strategies, the pursuit of alternative fuels has emerged as a pivotal endeavor for realizing sustainable energy solutions. Methanol and ammonia have surfaced as particularly promising and environmentally friendly liquid fuels, holding significant potential for aiding in the attainment of decarbonization objectives and addressing global energy requirements. This research proposes and scrutinizes a sophisticated cogeneration system integrating solid oxide fuel cells (SOFCs), gas turbine (GT), steam Rankine cycle, and organic Rankine cycle. Direct utilization of ammonia and methanol as fuel in this intricate system is examined, with the design and modeling facilitated through the utilization of Aspen HYSYS V.12.1. The thermodynamic performance of the proposed system is rigorously assessed by employing the foundational principles of the first and second laws of thermodynamics. The direct SOFCs fueled by ammonia and methanol exhibit notable energy efficiencies of 64.25 % and 58.42 %, respectively. Remarkably, the amalgamated systems showcase heightened energy efficiencies, witnessing a commendable increase of 12.64 % and 10.66 % when powered by ammonia and methanol, respectively, as compared to individual SOFC systems. Examination of exergy destruction reveals the SOFC as the principal contributor, with electrochemical and chemical processes constituting the primary sources of irreversibility. Additionally, explicit values for exergy destruction in the GT, afterburner, and heat exchanger components are provided. A comprehensive parametric study underscores the pivotal role of the fuel utilization factor (Uf), identifying a value of 0.85 as optimal and significantly augmenting the thermodynamic efficiency of the system. This analysis not only substantiates the potential of ammonia and methanol as effective carriers for hydrogen but also underscores the efficacy of waste heat recovery as a viable strategy for enhancing the overall thermodynamic performance of an SOFC system. The findings presented herein contribute valuable insights, paving the way for the strategic utilization of alternative fuels and cogeneration systems in the broader context of sustainable and environmentally conscious energy solutions.

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Thermodynamic Modeling and Performance Analysis of SOFC Fuel Cells

Mouissi,

Touaibi

2024

Springer Proceedings in Energy

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Advanced Exergy Analysis of an Integrated SOFC-Adsorption Refrigeration Power System

Cited by 3 publications

References 29 publications

Energy and Exergy Analysis of an Ammonia Fuel Cell Integrated System for Marine Vessels

Energy and Exergy Analysis of an Ammonia Fuel Cell Integrated System for Marine Vessels

Comparative Study of Thermodynamic Performances: Ammonia vs. Methanol SOFC for Marine Vessels

Thermodynamic Modeling and Performance Analysis of SOFC Fuel Cells

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