Determination of optimal operating conditions for a polymer electrolyte membrane fuel cell stack: optimal operating condition based on multiple criteria

2013 ◽  
Vol 37 (14) ◽  
pp. 1872-1888 ◽  
Author(s):  
Hoseyn Sayyaadi ◽  
Hossein Esmaeilzadeh
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Multiple Criteria ◽  
Operating Conditions ◽  
Optimal Operating ◽  
Optimal Operating Condition ◽  
Fuel Cell Stack ◽  
Electrolyte Membrane

The Analysis of the Operating Characteristics in a 600W Air Cooling Portable PEMFC

2004 ◽  
Author(s):  
Young-Jun Sohn ◽  
Gu-Gon Park ◽  
Tae-Hyun Yang ◽  
Young-Gi Yoon ◽  
Won-Yong Lee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte Membrane ◽  
Operating Conditions ◽  
Air Cooling ◽  
Operating Characteristics ◽  
Optimal Operating ◽  
Fuel Cell Stack ◽  
Electrolyte Membrane ◽  
Optimal Output ◽  
The Relationship

To maintain proper operating conditions is important to get optimal output power of a polymer electrolyte membrane fuel cell (PEMFC) stack. The air cooled fuel cell stack is widely used in sub kW PEMFC systems. The higher the power density of a stack, however, the more difficult it is to get well balanced operating conditions for the system such as the relative humidity, the temperature of stack, the rate of usage of reactant and so on. A 600W air cooled PEMFC stack was experimentally investigated to evaluate the design performance and to get optimal operating conditions for the portable application. The relationship between the operating conditions and the performance was analyzed. The results can be used as design criteria for portable PEMFC under various conditions.

Modeling and Experimental Analyses of a Two-Cell Polymer Electrolyte Membrane Fuel Cell Stack Emphasizing Individual Cell Characteristics

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Sang-Kyun Park ◽  
Song-Yul Choe
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Individual Cell ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Operating Conditions ◽  
Experimental Results ◽  
Fuel Cell Stack ◽  
Electrolyte Membrane ◽  
The Individual

Performance of individual cells in an operating polymer electrolyte membrane (PEM) fuel cell stack is different from each other because of inherent manufacturing tolerances of the cell components and unequal operating conditions for the individual cells. In this paper, first, effects of different operating conditions on performance of the individual cells in a two-cell PEM fuel cell stack have been experimentally investigated. The results of the experiments showed the presence of a voltage difference between the two cells that cannot be manipulated by operating conditions. The temperature of the supplying air among others predominantly influences the individual cell voltages. In addition, those effects are explored by using a dynamic model of a stack that has been developed. The model uses electrochemical voltage equations, dynamic water balance in the membrane, energy balance, and diffusion in the gas diffusion layer, reflecting a two-phase phenomenon of water. Major design parameters and an operating condition by conveying simulations have been changed to analyze sensitivity of the parameters on the performance, which is then compared with experimental results. It turns out that proton conductivity of the membrane in cells among others is the most influential parameter on the performance, which is fairly in line with the reading from the experimental results.

scholarly journals Consistency analysis of polymer electrolyte membrane fuel cell stack during cold start

2019 ◽  
Vol 241 ◽  
pp. 420-432 ◽  
Author(s):  
Rui Lin ◽  
Yike Zhu ◽  
Meng Ni ◽  
Zhenghua Jiang ◽  
Diming Lou ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Cold Start ◽  
Consistency Analysis ◽  
Fuel Cell Stack ◽  
Electrolyte Membrane

Sensitivity of Thermal Transport and Phase-Change in Thin Porous Layers to the Distribution of the Solid Matrix

2013 ◽  
Author(s):  
Vinaykumar Konduru ◽  
Ezequiel Medici ◽  
Jeffrey S. Allen
Keyword(s):  
Fuel Cell ◽  
Mass Transport ◽  
Polymer Electrolyte ◽  
Solid Phase ◽  
Polymer Electrolyte Membrane ◽  
Operating Conditions ◽  
Transport Layer ◽  
Solid Matrix ◽  
High Water Content ◽  
Electrolyte Membrane

Understanding the water transport in the Porous Transport Layer (PTL) is important to improve the operational performance of polymer electrolyte membrane fuel cells (PEMFC). High water content in the PTL and flow channel decreases the transport of the gas reactants to the polymer electrolyte membrane. Dry operating conditions result in increased ohmic resistance of the polymer electrolyte membrane. Both cases result in decreased fuel cell performance. Multi-phase flow in the PTL of the fuel cell is simulated as a network of pores surrounded by the solid material. The pore-phase and the solid-phase of the PTL are generated by varying the parameters of the Weibull distribution function. In the network model, the mass transfer takes place in the pore-phase and the bulk heat transfer takes place in the both the solid-phase and liquid phase of the PTL. Previous studies have looked at the thermal and mass transport in the porous media considering the pore size distribution. In the present study, the sensitivity of the thermal and mass transport to the different arrangements of the solid-phase is carried out and the effect of different solid-phase distributions on the thermal and liquid transport in PTL of PEM fuel cell are discussed.

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