Computationally efficient multi-phase models for a proton exchange membrane fuel cell: Asymptotic reduction and thermal decoupling

2011 ◽  
Vol 36 (22) ◽  
pp. 14573-14589 ◽  
Author(s):  
H. Ly ◽  
E. Birgersson ◽  
M. Vynnycky
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Computationally Efficient ◽  
Phase Models ◽  
Asymptotic Reduction ◽  
Multi Phase ◽  
Exchange Membrane

A Numerical Investigation of Heat and Mass Transfer in Air-Cooled Proton Exchange Membrane Fuel Cells

2019 ◽  
Author(s):  
Torsten Berning
Keyword(s):  
Heat Transfer ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Waste Heat ◽  
Proton Exchange ◽  
Fuel Cell Performance ◽  
Air Stream ◽  
Multi Phase ◽  
Exchange Membrane

Abstract A numerical analysis of an air-cooled proton exchange membrane fuel cell (PEMFC) has been conducted. The model utilizes the Eulerian multi-phase approach to predict the occurrence and transport of liquid water inside the cell. It is assumed that all the waste heat must be carried out of the fuel cell with the excess air which leads to a strong temperature increase of the air stream. The results suggest that the performance of these fuel cells is limited by membrane overheating which is ultimately caused by the limited heat transfer to the laminar air stream. A proposed remedy is the placement of a turbulence grid before such a fuel cell stack to enhance the heat transfer and increase the fuel cell performance.

Multi-Phase Flow and Condensation in Proton Exchange Membrane Fuel Cells

2002 ◽  
Author(s):  
John M. Stockie
Keyword(s):  
Fuel Cell ◽  
Liquid Water ◽  
Proton Exchange Membrane ◽  
Transport Processes ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Phase Flow ◽  
Multi Phase Flow ◽  
Multi Phase ◽  
Exchange Membrane

The porous electrodes in a proton exchange membrane fuel cell are characterized by multi-phase flow, involving liquid water and multispecies gases, that are undergoing both condensation and catalyzed reactions. Careful management of liquid water and heat in the fuel cell system is essential for optimizing performance. The primary focus of this study is thus on condensation and water transport, neither of which have yet been studied in as much detail as other aspects of fuel cell dynamics. We develop a two-dimensional model for multi-phase flow in a porous medium that captures the fundamental transport processes going on in the electrodes. The governing equations are discretized using a finite volume approach, and numerical simulations are performed in order to determine the effect of changing operating conditions on fuel cell performance.

Multi-phase simulation of proton exchange membrane fuel cell with 3D fine mesh flow field

2018 ◽  
Vol 42 (15) ◽  
pp. 4697-4709 ◽  
Author(s):  
Guobin Zhang ◽  
Biao Xie ◽  
Zhiming Bao ◽  
Zhiqiang Niu ◽  
Kui Jiao
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Fine Mesh ◽  
Multi Phase ◽  
Exchange Membrane
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