Water Management and Mass Transport Studies in Free Convection Proton-Exchange Membrane Fuel Cells

2019 ◽  
Vol 1 (6) ◽  
pp. 419-428 ◽  
Author(s):  
Dean Modroukas ◽  
Vijay Modi ◽  
Luc Frechette ◽  
Scott C. Barton
Keyword(s):  
Water Management ◽  
Fuel Cells ◽  
Free Convection ◽  
Mass Transport ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Transport Studies ◽  
Exchange Membrane

scholarly journals Effect of Pore Shape and Spacing on Water Droplet Dynamics in Flow Channels of Proton Exchange Membrane Fuel Cells

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1250
Author(s):  
Mengying Fan ◽  
Fengyun Duan ◽  
Tianqi Wang ◽  
Mingming Kang ◽  
Bin Zeng ◽  
...  
Keyword(s):  
Water Management ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Windward Side ◽  
Droplet Growth ◽  
Pore Shape ◽  
Droplet Dynamics ◽  
Exchange Membrane

Effective water management increases the performance of proton exchange membrane fuel cells (PEMFCs). The liquid droplet movement mechanism in the cathode channel, the gas-liquid two-phase flow pattern, and the resulting pressure drop are important to water management in PEMFCs. This work employed computational fluid dynamics (CFD) with a volume of fluid (VOF) to simulate the effects of two operating parameters on the liquid water flow in the cathode flow channel: Gas diffusion layer (GDL) pore shape for water emergence, and distance between GDL pores. From seven pore shapes considered in this work, the longer the windward side of the micropore is, the larger the droplet can grow, and the duration of droplet growth movement will be longer. In the cases of two micropores for water introduction, a critical pore distance is noted for whether two droplets coalesce. When the micropore distance was shorter than this critical value, different droplets coalesce after the droplets grew to a certain extent. These results indicate that the pore shape and the distance between pores should be accounted for in future simulations of PEMFC droplet dynamics and that these parameters need to be optimized when designing novel GDL structures.

Mass Transport through a Proton Exchange Membrane (Nafion) in Microbial Fuel Cells†

2008 ◽  
Vol 22 (1) ◽  
pp. 169-176 ◽  
Author(s):  
Kyu Jung Chae ◽  
Mijin Choi ◽  
Folusho F. Ajayi ◽  
Wooshin Park ◽  
In Seop Chang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Mass Transport ◽  
Microbial Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane

Water management in a single cell proton exchange membrane fuel cells with a serpentine flow field

2009 ◽  
Vol 193 (1) ◽  
pp. 249-257 ◽  
Author(s):  
Nik Suhaimi Mat Hassan ◽  
Wan Ramli Wan Daud ◽  
Kamaruzzaman Sopian ◽  
Jaafar Sahari
Keyword(s):  
Water Management ◽  
Fuel Cells ◽  
Flow Field ◽  
Single Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Serpentine Flow Field ◽  
Exchange Membrane
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