A Comprehensive Thermoeconomic Evaluation and Multi-Criteria Optimization of a Combined MCFC/TEG System

In this study, an integrated molten carbonate fuel cell (MCFC), thermoelectric generator (TEG), and regenerator energy system has been introduced and evaluated. MCFC generates power and heating load. The exit fuel gases of the MCFC is separated into three sections: the first section is transferred to the TEG to generate more electricity, the next chunk is conducted to a regenerator to boost the productivity of the suggested plant and compensate for the regenerative destructions, and the last section enters the surrounding. Computational simulation and thermodynamic evaluation of the hybrid plant are carried out utilizing MATLAB and HYSYS software, respectively. Furthermore, a thermoeconomic analysis is performed to estimate the total cost of the product and the system cost rate. The offered system is also optimized using multi-criteria genetic algorithm optimization to enhance the exergetic efficiency while reducing the total cost of the product. The power generated by MCFC and TEG is 1247.3 W and 8.37 W, respectively. The result explicates that the provided electricity and provided efficiency of the suggested plant is 1255.67 W and 38%, respectively. Exergy inquiry outcomes betokened that, exergy destruction of the MCFC and TEG is 13,945.9 kW and 262.75 kW, respectively. Furthermore, their exergy efficiency is 68.22% and 97.31%, respectively. The impacts of other parameters like working temperature and pressure, thermal conductance, the configuration of the advantage of the materials, etc., on the thermal and exergetic performance of the suggested system are also evaluated. The optimization outcomes reveal that in the final optimum solution point, the exergetic efficiency and total cost of the product s determined at 70% and 30 USD/GJ.

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Thermodynamic evaluation and multi-objective optimization of molten carbonate fuel cell-supercritical CO 2 Brayton cycle hybrid system

Energy Conversion and Management ◽

10.1016/j.enconman.2017.10.027 ◽

2017 ◽

Vol 153 ◽

pp. 538-556 ◽

Cited By ~ 36

Author(s):

Mohammad Ali Jokar ◽

Mohammad H. Ahmadi ◽

Mohsen Sharifpur ◽

Josua P. Meyer ◽

Fathollah Pourfayaz ◽

...

Keyword(s):

Fuel Cell ◽

Hybrid System ◽

Molten Carbonate Fuel Cell ◽

Brayton Cycle ◽

Thermodynamic Evaluation ◽

Multi Objective Optimization ◽

Molten Carbonate ◽

Multi Objective ◽

Carbonate Fuel Cell

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Ecologic and sustainable objective thermodynamic evaluation of molten carbonate fuel cell–supercritical CO 2 Brayton cycle hybrid system

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2016.12.110 ◽

2017 ◽

Vol 42 (9) ◽

pp. 6272-6280 ◽

Cited By ~ 21

Author(s):

Emin Açıkkalp

Keyword(s):

Fuel Cell ◽

Hybrid System ◽

Molten Carbonate Fuel Cell ◽

Brayton Cycle ◽

Thermodynamic Evaluation ◽

Molten Carbonate ◽

Carbonate Fuel Cell

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Optimization of a MCFC Hybrid System for Combined Production of Electricity and Hydrogen

Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis, Thermodynamics and Sustainability ◽

10.1115/imece2009-11590 ◽

2009 ◽

Author(s):

Vittorio Verda ◽

Flavio Nicolin

Keyword(s):

Fuel Cell ◽

Unit Cost ◽

Hybrid Plant ◽

Operating Conditions ◽

Molten Carbonate Fuel Cell ◽

Molten Carbonate ◽

Fuel Cell Performance ◽

Micro Gas Turbine ◽

Pressure Swing ◽

Economic Objective

In this paper, a hybrid plant obtained by integrating a molten carbonate fuel cell stack with a micro gas turbine and a steam reformer is considered. The system also produces hydrogen through a pressure swing absorption system. The aim of this work is the multi-objective optimisation of the system, considering energy and economic objective functions. Possible off-design operating conditions accounting for degradation of the fuel cell performance and time variation in the biogas composition are considered, as well as variation in the ambient temperature. The results show that the operating temperature of the fuel cell is a crucial design parameter as its value strongly affects the plant efficiency, its lifetime and the unit cost of electricity.

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Performance assessment of a biomass-fuelled distributed hybrid energy system integrating molten carbonate fuel cell, externally fired gas turbine and supercritical carbon dioxide cycle

Energy Conversion and Management ◽

10.1016/j.enconman.2020.112740 ◽

2020 ◽

Vol 211 ◽

pp. 112740 ◽

Cited By ~ 7

Author(s):

Dibyendu Roy ◽

Samiran Samanta ◽

Sudip Ghosh

Keyword(s):

Carbon Dioxide ◽

Fuel Cell ◽

Supercritical Carbon Dioxide ◽

Performance Assessment ◽

Gas Turbine ◽

Energy System ◽

Molten Carbonate Fuel Cell ◽

Molten Carbonate ◽

Hybrid Energy ◽

Carbonate Fuel Cell

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Exergetic, Exergoeconomic, Sustainability and Environmental Damage Cost Analyses of J85 Turbojet Engine with Afterburner

International Journal of Turbo and Jet Engines ◽

10.1515/tjj-2017-0019 ◽

2020 ◽

Vol 37 (2) ◽

pp. 167-194 ◽

Cited By ~ 3

Author(s):

Ozgur Balli

Keyword(s):

Environmental Damage ◽

Exergetic Efficiency ◽

Damage Cost ◽

Cost Index ◽

Cost Analyses ◽

Total Cost ◽

Cost Rate ◽

Sustainability Index ◽

Turbojet Engine ◽

Performance Analyses

AbstractThis paper deals with the performance analyses of exergetic, exergoeconomic, sustainability and environmental damage cost for J85 turbojet engine at Idle (ID), Intermediate (INT), Military (MIL) and Afterburner (AB) operation modes. The exergetic efficiency of whole engine is calculated to be 0.24 % at ID, 18.67 % at INT, 29.81 % at MIL and 22.77 % at AB modes, respectively. The unit exergy cost of product is accounted to be 30,423.94 $/GJ at ID, 269.35 $/GJ at INT, 121.47 $/GJ at MIL and 133.47 $/GJ at AB modes. The sustainable cost index is found to be 30,350.92 $/GJ at ID, 224.45 $/GJ at INT, 85.26 $/GJ at MIL and 103.0 $/GJ at AB modes while the sustainability index is obtained to be 1.0 at ID, 1.2 at INT, 1.43 % at MIL and 1.3 at AB modes. On the other hand, the environmental damage cost rate of engine are calculated to be 180.22 $/h at ID, 271.34 $/h at INT, 657.95 $/h at MIL and 1992.55 $/h at AB modes while the total cost rates of engine are determined to be 974.07 $/h at ID, 1357.15 $/h at INT, 2641.76 $/h at MIL and 6573.04 $/h at AB modes, respectively. The results indicate that J85 engine operates the exergetic-efficiently and cost-effectively at MIL mode.

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