Journal ArticleDOI
Rigorous 3-d mathematical modeling of PEM fuel cells - II. Model predictions with liquid water transport
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In this paper, the formation and transport of liquid water in proton exchange membrane (PEM) fuel cells were modeled as an equilibrium process, while the transport was governed by pressure, surface tension, gravity and electro-osmotic drag.Abstract:
In this part of the paper, we present a model to treat formation and transport of liquid water in proton exchange membrane ~PEM! fuel cells ~FCs! in three-dimensional ~3-D! geometry. The performance of modern-day PEM FCs at high current density are largely dictated by the effective management of liquid water. In the first part of this paper, a rigorous model was presented to model PEM FCs using a computational fluid dynamic technique. It was found that under the assumption of no liquid water formation, the model consistently overpredicted measured polarization behavior. In the model presented here, the phase change process is modeled as an equilibrium process, while the transport of liquid water is governed by pressure, surface tension, gravity and electro-osmotic drag. Results show that the inclusion of liquid water transport greatly enhances the predictive capability of the model and is necessary to match experimental data at high current density.read more
Citations
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Journal ArticleDOI
A review of polymer electrolyte membrane fuel cells: Technology, applications,and needs on fundamental research
TL;DR: In this article, the authors present the latest status of PEM fuel cell technology development and applications in the transportation, stationary, and portable/micro power generation sectors through an overview of the state-of-the-art and most recent technical progress.
Journal ArticleDOI
Fundamental models for fuel cell engineering.
TL;DR: Technical Challenges 4754 4.2.1.
Journal ArticleDOI
Water transport in polymer electrolyte membrane fuel cells
Kui Jiao,Xianguo Li,Xianguo Li +2 more
TL;DR: In this article, the state and transport mechanism of water in different components of PEMFC are elaborated in detail, and the experimental techniques have been developed to predict distributions of water, gas species, temperature and other parameters in polymer electrolyte membrane fuel cell (PEMFC).
Journal ArticleDOI
Modeling transport in polymer-electrolyte fuel cells.
Adam Z. Weber,John Newman +1 more
TL;DR: This review has highlighted the important effects that should be modeled and shown the vast complexities of transport within polymer-electrolyte fuel cells and the various ways they have been and can be modeled.
Journal ArticleDOI
A Critical Review of Modeling Transport Phenomena in Polymer-Electrolyte Fuel Cells
Adam Z. Weber,Rodney L. Borup,Robert M. Darling,Prodip K. Das,Thomas J. Dursch,Thomas J. Dursch,Wenbin Gu,David Harvey,David Harvey,Ahmet Kusoglu,Shawn Litster,Matthew M. Mench,Rangachary Mukundan,Jon P. Owejan,Jon G. Pharoah,Marc Secanell,Iryna V. Zenyuk +16 more
TL;DR: In this paper, the authors present the results of a study at the Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA and the United Technologies Research Center, East Hartford, Connecticut 06118, USA.
References
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Journal ArticleDOI
Polymer Electrolyte Fuel Cell Model
TL;DR: In this paper, an isothermal, one-dimensional, steady-state model for a complete polymer electrolyte fuel cell (PEFC) with a 117 Nation | membrane is presented, which predicts an increase in membrane resistance with increased current density and demonstrates the great advantage of a thinner membrane in alleviating this resistance problem.
Book
Flow and Transport in Porous Formations
TL;DR: In this article, the authors presented a systematic and comprehensive approach to analyze the large scale heterogeneity of aquifers and its effect on the transport of contaminant in subsurface hydrology.
Journal ArticleDOI
A Mathematical Model of the Solid‐Polymer‐Electrolyte Fuel Cell
Dawn Bernardi,Mark W. Verbrugge +1 more
TL;DR: In this article, a mathematical model of the solid polymer-electrolyte fuel cell is presented to investigate factors that limit cell performance and elucidate the mechanism of species transport in the complex network of gas, liquid, and solid phases of the cell.
Journal ArticleDOI
A water and heat management model for proton-exchange-membrane fuel cells
Trung Van Nguyen,Ralph E. White +1 more
TL;DR: In this paper, a water and heat management model was developed and used to investigate the effectiveness of various humidification designs for proton-exchange-membrane fuel cells and showed that at high current (> 1A/cm[sup 2], ohmic loss in the membrane accounts for a large fraction of the voltage loss in a cell and back diffusion of water from the cathode side of the membrane is insufficient to keep the membrane hydrated.
Journal ArticleDOI
Mathematical model of a gas diffusion electrode bonded to a polymer electrolyte
Dawn Bernardi,Mark W. Verbrugge +1 more
TL;DR: In this paper, a mathematical model for an ion exchange membrane attached to a gas-fed porous electrode is derived and discussed, and the model is applied to simulate the oxygen electrode of a polymer-electrolyte fuel cell.