Performance assessment of a power/refrigeration cogeneration system driven by the waste heat of a solid oxide fuel cell

Document Type : Research Paper


Mechanical Engineering Department, Ayatollah Boroujerdi University, Boroujerd, Iran


In the present study, combination of a solid oxide fuel cell with two CCP subsystem to generate power and refrigeration is investigated. The proposed system consists of two combined ORC-VCR system which their input energy is supplied by the waste heat of a SOFC. The energy and exergy analysis is carried out for the system components. The results indicate that recovering the waste heat of the SOFC, the energy and exergy efficiencies are improved by 45.82% and 6.14% compared to the standalone SOFC system. Besides, the proposed system can generate 382.4kW power and 176.28kW refrigeration, respectively. Moreover, the exergy analysis demonstrates that the air heat exchanger, afterburner, SOFC stack and evaporatorI have considerable exergy destruction rate in comparison with other system components. The effect of key parameters of the SOFC and ORC-VCR subsystems on the system performance are also analyzed. The results revealed that SOFC net power and refrigeration capacity increase with increasing current density. Furthermore, by increasing the SOFC operating temperature, the refrigeration capacity increases. However, there is an optimum value for the fuel cell operating temperature in which the SOFC net power is maximum.


Main Subjects

[1] Feng L., Dai X., Mo J, Shi L. “Analysis of en­ergy-matching performance and suitable users of conventional CCHP systems coupled with differ­ent energy storage systems”, Energy Conversion and Management, 2019, 200: 112093. https://doi. org/10.1016/j.enconman.2019.112093.
[2] Teke A, Timur O. “Assessing the energy efficien­cy improvement potentials of HVAC systems con­sidering economic and environmental aspects at the hospitals”, Renewable and Sustainable Energy 254
Reviews, 2014, 33: 224. rser.2014.02.002.
[3] Kim D-W., Yun U-J., Lee J-W et al. “Fabrication and operating characteristics of a flat tubular seg­mented-in-series solid oxide fuel cell unit bundle”, Energy, 2014, 72: 215.­ergy.2014.05.026.
[4] Lee YD., Ahn KY., Morosuk T, Tsatsaronis G. “Environmental impact assessment of a solid-oxide fuel-cell-based combined-heat-and-power-genera­tion system”, Energy, 2015, 79: 455.
[5] Mazzucco A, Rokni M. “Thermo-economic anal­ysis of a solid oxide fuel cell and steam inject­ed gas turbine plant integrated with woodchips gasification”, Energy, 2014, 76: 114. https://doi. org/10.1016/
[6] Mojaver P., Khalilarya S, Chitsaz A. “Multi-ob­jective optimization using response surface meth­odology and exergy analysis of a novel integrat­ed biomass gasification, solid oxide fuel cell and high-temperature sodium heat pipe system”, Ap­plied Thermal Engineering, 2019, 156: 627. https://
[7] Mounir H., Belaiche M., El Marjani A, El Gharad A. “Thermal stress and probability of survival in­vestigation in a multi-bundle integrated-planar sol­id oxide fuel cells IP-SOFC (integrated-planar solid oxide fuel cell)”, Energy, 2014, 66: 378. https://doi. org/10.1016/
[8] Yang B., Wang J., Zhang M et al. “A state-of-the-art survey of solid oxide fuel cell parameter identification: Modelling, methodology, and per­spectives”, Energy Conversion and Management, 2020, 213: 112856.­conman.2020.112856.
[9] Al-Sulaiman FA., Dincer I, Hamdullahpur F. “Ex­ergy analysis of an integrated solid oxide fuel cell and organic Rankine cycle for cooling, heating and power production”, Journal of Power Sources, 2010, 195: 2346.­sour.2009.10.075.
[10] Bao C., Shi Y., Croiset E et al. “A multi-level sim­ulation platform of natural gas internal reforming solid oxide fuel cell–gas turbine hybrid generation system: Part I. Solid oxide fuel cell model library”, Journal of Power Sources, 2010, 195: 4871. https://
[11] Calise F., Dentice d’Accadia M., Palombo A, Vanoli L. “Simulation and exergy analysis of a hybrid Solid Oxide Fuel Cell (SOFC)–Gas Tur­bine System”, Energy, 2006, 31: 3278. https://doi. org/10.1016/
[12] Chan SH., Ho HK, Tian Y. “Modelling of simple hybrid solid oxide fuel cell and gas turbine power plant”, Journal of Power Sources, 2002, 109: 111.
[13] Chitgar N, Moghimi M. “Design and evalua­tion of a novel multi-generation system based on SOFC-GT for electricity, fresh water and hydrogen production”, Energy, 2020, 197: 117162. https://
[14] Gholamian E, Zare V. “A comparative thermody­namic investigation with environmental analysis of SOFC waste heat to power conversion employing Kalina and Organic Rankine Cycles”, Energy Con­version and Management, 2016, 117: 150. https://
[15] Ma S., Wang J., Yan Z et al. “Thermodynamic analysis of a new combined cooling, heat and pow­er system driven by solid oxide fuel cell based on 255
ammonia–water mixture”, Journal of Power Sourc­es, 2011, 196: 8463.­sour.2011.06.008.
[16] Massardo AF, Lubelli F. “Internal Reforming Solid Oxide Fuel Cell-Gas Turbine Combined Cy­cles (IRSOFC-GT): Part A—Cell Model and Cycle Thermodynamic Analysis”, Journal of Engineer­ing for Gas Turbines and Power, 1999, 122: 27. 10.1115/1.483187.
[17] Ozcan H, Dincer I. “Thermodynamic Analy­sis of an Integrated SOFC, Solar ORC and Ab­sorption Chiller for Tri-generation Applications”, Fuel Cells, 2013, 13: 781. fuce.201300012.
[18] Peng MY-P., Chen C., Peng X, Marefati M. “En­ergy and exergy analysis of a new combined con­centrating solar collector, solid oxide fuel cell, and steam turbine CCHP system”, Sustainable Energy Technologies and Assessments, 2020, 39: 100713.
[19] Tian M., Yu Z., Zhao H, Yin J. “Thermodynamic analysis of an integrated solid oxide fuel cell, Or­ganic Rankine Cycle and absorption chiller trigen­eration system with CO2 capture”, Energy Conver­sion and Management, 2018, 171: 350. https://doi. org/10.1016/j.enconman.2018.05.108.
[20] Zabaniotou A. “Agro-residues implication in decentralized CHP production through a thermo­chemical conversion system with SOFC”, Sustain­able Energy Technologies and Assessments, 2014, 6: 34.
[21] Zhang S., Liu H., Liu M et al. “An efficient inte­gration strategy for a SOFC-GT-SORC combined system with performance simulation and paramet­ric optimization”, Applied Thermal Engineering, 2017, 121: 314.­maleng.2017.04.066.
[22] Zhang X., Li J., Li G, Feng Z. “Cycle analysis of an integrated solid oxide fuel cell and recupera­tive gas turbine with an air reheating system”, Jour­nal of Power Sources, 2007, 164: 752. https://doi. org/10.1016/j.jpowsour.2006.11.031.
[23] Wang J., Yan Z., Ma S, Dai Y. “Thermodynamic analysis of an integrated power generation system driven by solid oxide fuel cell”, International Jour­nal of Hydrogen Energy, 2012, 37: 2535. https://
[24] Yan Z., Zhao P., Wang J, Dai Y. “Thermody­namic analysis of an SOFC–GT–ORC integrated power system with liquefied natural gas as heat sink”, International Journal of Hydrogen En­ergy, 2013, 38: 3352. ijhydene.2012.12.101.
[25] Zhao H., Jiang T, Hou H. “Performance analy­sis of the SOFC–CCHP system based on H2O/ Li–Br absorption refrigeration cycle fueled by coke oven gas”, Energy, 2015, 91: 983. https://doi. org/10.1016/
[26] Chitsaz A., Hosseinpour J, Assadi M. “Effect of re­cycling on the thermodynamic and thermoeconom­ic performances of SOFC based on trigeneration systems; A comparative study”, Energy, 2017, 124: 613.
[27] Chitgar N., Emadi MA., Chitsaz A, Rosen MA. “Investigation of a novel multigeneration system driven by a SOFC for electricity and fresh water production”, Energy Conversion and Management, 2019, 196: 296.­man.2019.06.006.256
[28] Emadi MA., Chitgar N., Oyewunmi OA, Markides CN. “Working-fluid selection and thermoeconomic optimisation of a combined cycle cogeneration du­al-loop organic Rankine cycle (ORC) system for solid oxide fuel cell (SOFC) waste-heat recovery”, Applied Energy, 2020, 261: 114384. https://doi. org/10.1016/j.apenergy.2019.114384.
[29] Adebayo V., Abid M., Adedeji M, Hussain Ratlamwala TA. “Energy, exergy and exergo-envi­ronmental impact assessment of a solid oxide fuel cell coupled with absorption chiller & cascaded closed loop ORC for multi-generation”, Interna­tional Journal of Hydrogen Energy, 2022, 47: 3248.
[30] Zeng R., Guo B., Zhang X et al. “Study on ther­modynamic performance of SOFC-CCHP system integrating ORC and double-effect ARC”, Energy Conversion and Management, 2021, 242: 114326.
[31] Zhong L., Yao E., Zou H, Xi G. “Thermo-eco­nomic-environmental analysis of an innovative combined cooling and power system integrating Solid Oxide Fuel Cell, Supercritical CO2 cycle, and ejector refrigeration cycle”, Sustainable Energy Technologies and Assessments, 2021, 47: 101517.
[32] Dhahad HA., Ahmadi S., Dahari M et al. “En­ergy, exergy, and exergoeconomic evaluation of a novel CCP system based on a solid oxide fuel cell integrated with absorption and ejector refrigeration cycles”, Thermal Science and Engineering Prog­ress, 2021, 21: 100755. tsep.2020.100755.
[33] Mei S., Lu X., Zhu Y, Wang S. “Thermodynam­ic assessment of a system configuration strategy for a cogeneration system combining SOFC, ther­moelectric generator, and absorption heat pump”, Applied Energy, 2021, 302: 117573. https://doi. org/10.1016/j.apenergy.2021.117573.
[34] Song M., Zhuang Y., Zhang L et al. “Thermody­namic performance assessment of SOFC-RC-KC system for multiple waste heat recovery”, Energy Conversion and Management, 2021, 245: 114579.
[35] Szargut J. Exergy Method: Technical and Ecolog­ical Applications. WIT Press; 2005.
[36] Saleh B. “Energy and exergy analysis of an in­tegrated organic Rankine cycle-vapor compression refrigeration system”, Applied Thermal Engineer­ing, 2018, 141: 697.­plthermaleng.2018.06.018.