Electrochemical and thermodynamic modeling of a CHP system using tubular solid oxide fuel cell (SOFC-CHP)

Pirkandi, Jamasb; Ghassemi, Majid; Hamedi, Mohammad-Hossein; Mohammadi, Rafat

doi:10.1016/j.jclepro.2012.01.038

Cited by 108 publications

(25 citation statements)

References 25 publications

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“…The air composition was 21% oxygen and 79% nitrogen. In Figure 2, the variation of total voltage and overpotentials are compared with the results of Pirkandi et al [10]. Since the compared curves are close, the current model is valid and reliable.…”

Section: Irsofcmentioning

confidence: 84%

“…The modeled fuel cell is validated with a model proposed by Pirkandi et al [10] (Figures 2(a)-2(d)). The fuel cell was run based on Pirkandi et al 's [10] condition which was a tubular fuel cell at 1273 K and 100 kPa with 0.85 of fuel utilization factor and 9000 A/m 2 of limiting current density.…”

Section: Irsofcmentioning

confidence: 92%

“…Hydrogen takes part in an electrochemical reaction ( ⇒ H 2 + (1/2)O 2 → H 2 O). Here, , , and are the molar rate progress of reforming, shifting, and electrochemical reactions, respectively [10]. This molar rate progress is calculated based on the relation among the equation constants, the temperature, and the pressure of the gasses.…”

Section: Direct Internalmentioning

confidence: 99%

“…The fuel cell was run based on Pirkandi et al 's [10] condition which was a tubular fuel cell at 1273 K and 100 kPa with 0.85 of fuel utilization factor and 9000 A/m 2 of limiting current density. The fuel composition was 97% methane, 1.5% carbon dioxide, and 1.5% nitrogen.…”

Section: Irsofcmentioning

confidence: 99%

See 3 more Smart Citations

A Comparison of Off-Grid-Pumped Hydro Storage and Grid-Tied Options for an IRSOFC-HAWT Power Generator

Majidniya¹,

Gharali²,

Raahemifar³

2017

International Journal of Rotating Machinery

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An Internal Reforming Solid Oxide Fuel Cell (IRSOFC) is modeled thermodynamically; a Horizontal Axis Wind Turbine (HAWT) is designed; the combined IRSOFC-HAWT system should create a reliable source of electricity for the demand of a village located in Manjil, Iran. The output power of HAWT is unstable, but by controlling the fuel rate for the IRSOFC it is possible to have a stable power output from the combined system. When the electricity demand is over the peak or the wind speed is low/unstable/significantly high, the generated power may not be sufficient. To solve this problem, two scenarios are considered: connecting to the grid or using a Pumped Hydro Storage (PHS). For the second scenario, the extra produced electricity is saved when the production is more than demand and can be used when the extra power is needed. The economic analysis is done based on the economic conditions in Iran. The results will show a period of return about 9.5 and 13 years with the levelized cost of electricity about 0.0747 and 0.0882 $/kWh for the first and second scenarios, respectively. Furthermore, effects of some parameters such as the electricity price and the real interest rate are discussed.

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Section: Irsofcmentioning

confidence: 84%

Section: Irsofcmentioning

confidence: 92%

Section: Direct Internalmentioning

confidence: 99%

Section: Irsofcmentioning

confidence: 99%

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A Comparison of Off-Grid-Pumped Hydro Storage and Grid-Tied Options for an IRSOFC-HAWT Power Generator

Majidniya¹,

Gharali²,

Raahemifar³

2017

International Journal of Rotating Machinery

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“…El calor generado como subproducto, generalmente, se utiliza para generar más electricidad, haciendo girar turbinas de gas y por lo tanto, aumenta la eficiencia con sistemas combinados (Combined Heat and Power, CHP) entre 70 y 80 % 46,47,48 . Este tipo de celdas, son fiables, modulares y adaptables a varios combustibles con bajas emisiones de gases nocivos tales como NO x y SO x .…”

Section: Celda De Combustible De óXido Sólido (Solid Oxide Fuel Cellunclassified

Estudio comparativo de las diferentes tecnologías de celdas de combustible

Alvarado-Flores¹

2013

Bol. Soc. Esp. Ceram. Vidr.

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INTRODUCCIÓNLas celdas de combustible son básicamente sistemas termodinámicos abiertos. Operan en base a reacciones electroquímicas presentes y a los reactivos consumidos de una fuente externa 1,2,3,4 . Son alternativas favorables a los métodos convencionales de generación de energía eléctrica, con aplicación a escala menor. El hidrógeno y los combustibles hidrocarburos, contienen una cantidad importante de energía química en comparación con los convencionales materiales de baterías; por lo tanto, actualmente se han desarrollado para numerosas aplicaciones energéticas.El hidrógeno y la tecnología de las celdas de combustible, son prometedores sustitutos de los combustibles fósiles para proveer de energía a las zonas rurales donde no hay acceso a la red pública o cuando el costo de cableado es enorme, así como la transferencia de electricidad. Además, las celdas de combustible se pueden emplear como fuente segura de energía eléctrica en sistemas de alimentación ininterrumpida (uninterruptible power supplies, UPS), estaciones de generación de energía y sistemas de distribución. La tabla 1, muestra una comparación general entre los sistemas de celdas de combustible y otros sistemas de generación de energía 5,6,7 .De acuerdo a la tabla 1, se puede observar que el rendimiento más alto, se obtiene en los sistemas de celdas de combustible, en comparación con los sistemas convencionales de distribución de energía. Tienen un diseño simple y también funcionamiento confiable. Además, con el uso del hidrogeno como reactivo, estos sistemas resultan amigables con el medio ambiente produciendo energía limpia y de forma silenciosa 8,9,10,11,12,13 . Actualmente, los sistemas de celdas de combustible se utilizan ampliamente en aplicaciones a pequeña y gran escala, por Las celdas de combustible generan electricidad y calor durante la reacción electroquímica que ocurre entre el oxígeno e hidrógeno para formar agua. La tecnología de la celda de combustible es un camino prometedor para proporcionar energía en áreas rurales, donde no hay acceso a la red eléctrica pública, o donde hay un costo enorme en el cableado y transferencia de electricidad. Además, las celdas de combustible, pueden emplearse como fuente de energía, para asegurar la energía eléctrica como por ejemplo, en fuentes de potencia ininterrumpida (uninterruptible power supplies, UPS), estaciones de generación de energía y sistemas de distribución. En este artículo, se hace un estudio comparativo sobre diseño básico, principios de funcionamiento, aplicaciones, ventajas y desventajas de las diversas tecnologías disponibles para celdas de combustible. Además, se comparan las características tecno-económicas de los vehículos que funcionan con celdas de combustible a partir de hidrógeno (Fuel Cell Vehicle, FVC) y vehículos con motor de combustión interna (Internal Combustion Engine Vehicle, ICEV). Los resultados indican que los sistemas de celdas de combustibles tienen un diseño simple, confiabilidad alta, funcionamiento silencioso, alta eficiencia y menor impacto ambiental. ...

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Sensitivity analysis of energy, exergy, and environmental models for a combined cooling, heating, and power system at different operating conditions of proton exchange membrane fuel cell

Kharkeshi

Mehregan

Sheykhi

2023

Env Prog and Sustain Energy

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In this research article, for recovering the waste heat of the proton exchange membrane (PEM) fuel cell, a combined cooling heating and power (CCHP) system with a new arrangement is proposed. The main system components are a PEM, an absorption chiller, an auxiliary boiler, and hydrogen and heat storage tanks. The electrochemical model of PEM is presented for evaluating the power and heat of the fuel cell. Also, energy and exergy efficiencies and fuel energy saving ratio of the CCHP system are evaluated by the steady‐state thermodynamic model, and for the first time, the impacts of critical operating parameters of PEM such as current density, operating pressure, and temperature on the annual carbon dioxide (CO2) emission reduction and annual CO2 tax reduction as well as fuel saving are studied. The results show that the proposed CCHP system's energy efficiency is evaluated at about 66%. With the increase in temperature of PEM, the exergy efficiency reaches 37%. In addition, using this system can reduce CO2 emissions by 191 ton per year. Also, this system can reduce the tax cost of carbon dioxide emissions by about $ 5700 per year.

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Electrochemical and thermodynamic modeling of a CHP system using tubular solid oxide fuel cell (SOFC-CHP)

Cited by 108 publications

References 25 publications

A Comparison of Off-Grid-Pumped Hydro Storage and Grid-Tied Options for an IRSOFC-HAWT Power Generator

A Comparison of Off-Grid-Pumped Hydro Storage and Grid-Tied Options for an IRSOFC-HAWT Power Generator

Estudio comparativo de las diferentes tecnologías de celdas de combustible

Sensitivity analysis of energy, exergy, and environmental models for a combined cooling, heating, and power system at different operating conditions of proton exchange membrane fuel cell

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