Thermodynamic analysis of a PEM fuel cell power system

Hussain, Mohammed; Baschuk, J.J.; Li, X.; Dinçer, İbrahim

doi:10.1016/j.ijthermalsci.2005.02.009

Cited by 106 publications

(43 citation statements)

References 10 publications

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“…* Kinetic and potential exergies are neglected. * Chemical exergy values are taken from literature (Gaggioli and Petit, 1997 (Hussain et al, 2005), which is emphasized that $20% of total heat generated by the fuel cell is lost via convection and radiation from the fuel cell. * Utilization ratios of hydrogen and oxygen are 80 and 50%, respectively (Lee et al, 2004).…”

Section: Assumptionsmentioning

confidence: 99%

Exergetic performance analysis of a PEM fuel cell

Midilli

Dinçer

2006

Int. J. Energy Res.

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SUMMARYIn this paper we investigate the effects of thermodynamic irreversibilities on the exergetic performance of proton exchange membrane (PEM) fuel cells as a function of cell operating temperature, pressures of anode and cathode, current density, and membrane thickness. The practical operating conditions are selected to be 3-5 atm for anode and cathode pressures, and 323-353 K for the cell temperatures, respectively. In addition, the membrane thicknesses are chosen as 0.016, 0.018 and 0.02 cm, respectively. Moreover, the current density range of the PEM fuel cell is selected to be 0.01-2.0 A cm À2. It is concluded that exergy efficiency of PEM fuel cell decreases with a rise in membrane thickness and current density, and increases with a rise of cell operating pressure and with a decrease of current density for the same membrane thickness. Thus, it can be said that, in order to increase the exergetic performance of PEM fuel cell, the lower membrane thickness, the lower current density and the higher cell operating pressure should be selected in case PEM fuel cell is operated at constant cell temperature.

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Section: Assumptionsmentioning

confidence: 99%

Exergetic performance analysis of a PEM fuel cell

Midilli

Dinçer

2006

Int. J. Energy Res.

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“…Current from the anode to cathode, shown in figure [2] and by equations [1] and [2], is reduced by the resistance of the current carrier, due to structural interference, shown in figure [5] 21 . Graphene can overcome this problem in the form of carbon nanotubes (CNTs).…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic Effects of Nanotechnological Augmentation of Hydrogen Fuel Cells

Woodley

Yang

Tanner

et al. 2017

PAMR

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This meta-study focuses on the research regarding the use of nanotechnology in traditional fuel cells in order to increase thermodynamic efficiency through the exploitation of various thermodynamic systems and theories. The use of nanofilters and nano-structured catalysts improve the fuel cell system through the means of filtering molecules from protons and electrons significantly increases the possible output of the fuel cell and the use of nano-platinum catalysts to lower the activation energy of the fuel cell chemical reaction a notable amount resulting in a more efficient system and smaller entropy in comparison to the use of macro sized catalysts.

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“…Comprehensive thermodynamic models were developed for SOFC power systems fed by methane in Chan and Ding (2005), and PEMFC system Hussain et al (2005), respectively, employing the lumped stack approach. The SOFC system studied consists of fuel cell stack, heat exchangers for preheating fuel and air streams, an afterburner to burn off the residual fuel, a vaporiser for vaporising water, a mixer for mixing fuel and steam, a reformer to produce hydrogen-rich reformate and a steam boiler serves to balance the heat of the power system, while the PEMFC system includes the air compressor, heat exchanger, humidifier and a cooling loop.…”

Section: Approaches For Analysing Fuel Cell Systemsmentioning

confidence: 99%

On Modeling of Heat and Mass Transfer and Other Transport Phenomena in Fuel Cells

Sundén¹,

Yuan²

2010

Frontiers in Heat and Mass Transfer

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Depending on specific configuration and design, a variety of physical phenomena is present in fuel cells, e.g., multi-component gas flow, energy and mass transfer of chemical species in composite domains and sites. These physical phenomena are strongly affected by chemical/electrochemical reactions in nano-/micro-scale structured electrodes and electrolytes. Due to the electrochemical reactions, generation and consumption of chemical species together with electric current production take place at the active surfaces for all kinds of fuel cells. Furthermore, water management and twophase flow in proton exchange membrane fuel cells (PEMFCs) and internal reforming reactions of hydrocarbon fuels in solid oxide fuel cells (SOFCs) are strongly coupled with the electrochemical reactions and other transport processes to make the physical phenomena even more complicated. For modeling and analysis at the unit-cell and component level typically CFD-based approaches might be appropriate. On the fuel cell stack and system levels, methods like lumped parameter analysis and overall energy/mass balances are more suitable. This paper describes the various kinds of methods for modeling and analysis, and how these can be used as well as their applicability and limitations.

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Thermodynamic analysis of a PEM fuel cell power system

Cited by 106 publications

References 10 publications

Exergetic performance analysis of a PEM fuel cell

Exergetic performance analysis of a PEM fuel cell

Thermodynamic Effects of Nanotechnological Augmentation of Hydrogen Fuel Cells

On Modeling of Heat and Mass Transfer and Other Transport Phenomena in Fuel Cells

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