A flow channel design procedure for PEM fuel cells with effective water removal

2007 ◽  
Vol 163 (2) ◽  
pp. 933-942 ◽  
Author(s):  
Xianguo Li ◽  
Imran Sabir ◽  
Jaewan Park
Keyword(s):  
Fuel Cells ◽  
Design Procedure ◽  
Pem Fuel Cells ◽  
Flow Channel ◽  
Water Removal ◽  
Channel Design ◽  
Effective Water

Performance of Proton Exchange Membrane Fuel Cells with Honeycomb-like Flow Channel Design

Energy ◽  
2021 ◽  
pp. 122102
Author(s):  
Shuanyang Zhang ◽  
Shun Liu ◽  
Hongtao Xu ◽  
Gaojie Liu ◽  
Ke Wang
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Flow Channel ◽  
Proton Exchange ◽  
Channel Design ◽  
Exchange Membrane

Effects of Geometrical Parameters on Improving the Transversal Mass Transport in PEM Fuel Cells

2006 ◽  
Author(s):  
Yanxia Zhao ◽  
Renwei Mei ◽  
James F. Klausner
Keyword(s):  
Fuel Cells ◽  
Flow Rate ◽  
Fluid Transport ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cells ◽  
Gas Diffusion ◽  
Flow Channel ◽  
Geometrical Parameters ◽  
Electrolyte Membrane ◽  
Transversal Flow

A computational model using Lattice Boltzmann Equation (LBE) method is employed to investigate the fluid transport on the anode side of Polymer Electrolyte Membrane (PEM) fuel cells, with an emphasis on mass transfer enhancement. A 3-dimensional LBE code is developed to solve the flows in the channel and the porous media in the gas diffusion layer (GDL) simultaneously. Multiple flow enhancers (obstructions in the flow channel) are placed in the channel to enhance the transversal flow across the GDL. The mass flow rate, the velocity field and the pressure distribution are analyzed. The effects of flow enhancers are assessed. The results show that the transversal flow across the GDL is enhanced by placing flow enhancers in the channel. Increasing flow enhancer size can significantly increase the transversal flow rate, with high pressure-loss through the flow channel. The results also demonstrate that the location of flow enhancers in the flow channel have a remarkable impact on the transversal flow rate. The transversal flow rate increases as the GDL porosity increases.

Improvement of performance of gas flow channel in PEM fuel cells

2008 ◽  
Vol 49 (10) ◽  
pp. 2776-2787 ◽  
Author(s):  
Jenn-Kun Kuo ◽  
Tzu-Shuang Yen ◽  
Cha’o-Kuang Chen
Keyword(s):  
Fuel Cells ◽  
Gas Flow ◽  
Pem Fuel Cells ◽  
Flow Channel

Enhanced Water Removal from PEM Fuel Cells Using Acoustic Pressure Waves

2019 ◽  
Vol 166 (7) ◽  
pp. F3143-F3153 ◽  
Author(s):  
Mehdi Mortazavi ◽  
Anthony D. Santamaria ◽  
Jingru Z. Benner ◽  
Vedang Chauhan
Keyword(s):  
Fuel Cells ◽  
Acoustic Pressure ◽  
Pem Fuel Cells ◽  
Water Removal ◽  
Pressure Waves

Influence of Flow Channel Design on the Flow Pressure Drop and the Performance of Direct Methanol Fuel Cells

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Yong-Sheen Hwang ◽  
Suk-Won Cha ◽  
Hoon Choi ◽  
Dae-Young Lee ◽  
Seo Young Kim
Keyword(s):  
Fuel Cells ◽  
Pressure Drop ◽  
Direct Methanol Fuel Cells ◽  
Flow Channel ◽  
Channel Design ◽  
Balance Of Plant ◽  
Direct Methanol ◽  
Flow Pressure ◽  
Methanol Fuel Cells ◽  
Optimal Driving

We investigated the optimum flow channel design for direct methanol fuel cells (DMFCs). Especially, we explored the effect of the pressure drop across the inlet and outlet on the performance of the DMFCs with various flow channel designs. In DMFC systems, the optimization of such parameters are critical to minimize the power usage by the auxiliary devices, such as fuel pump and blowers. In this paper, we present how the pressure drop control may determine the optimal driving point of the DMFC stack. Also, we show how the optimal fuel utilization ratio may be achieved, without degrading the performance of DMFC stacks. Overall, we discuss how the flow channel design affects the selection of the balance of plant (BOP) components, the design of the DMFC system, and the efficiency of the entire system.

Experimental Investigation of the Water Impact on Performance of Proton Exchange Membrane Fuel Cells (PEMFC) With Porous and Non-Porous Flow Channels

2012 ◽  
Author(s):  
P. Karthikeyan ◽  
H. Calvin Li ◽  
G. Lipscomb ◽  
S. Neelakrishnan ◽  
J. G. Abby ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Liquid Water ◽  
Proton Exchange Membrane ◽  
Removal Rate ◽  
Gas Diffusion ◽  
Flow Channel ◽  
Proton Exchange ◽  
Water Removal ◽  
Flow Channels ◽  
Exchange Membrane

The most critical aspect of fuel cell water management is the delicate balance of membrane hydration and avoiding cathode flooding. Liquid water accumulation in the interfacial contact area between the flow channel landing and gas diffusion layer (GDL) can dramatically impact steady and transient performance of proton exchange membrane fuel cells (PEMFCs). In this concern, a porous landing could facilitate water removal in the cathode flow channel and significantly improve PEMFCs performance. In this work, an attempt has been made to fabricate the porous interdigitated cathode flow channels from a porous carbon sheet. Performance measurements have been made with nominally identical PEMFCs using non-porous (serpentine and interdigitated) and porous (interdigitated) cathode flow channels. PEMFCs with porous interdigitated flow channels had 48% greater power output than PEMFCs with non-porous interdigitated flow channels at high current densities. For the non-porous interdigitated flow channel, significant performance loss appears to arise from greatly reduced oxygen transport rates when the water generation rate exceeds the water removal rate, however for the porous interdigitated flow channel, the design removes the accumulated liquid water from the landing area through the capillarity of its porous structure and eliminates the stagnant regions under the landing, thereby reducing liquid flooding in the interface between landing and GDL area.

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