... Air-cooled polymer electrolyte membrane (PEM) fuel cells have recently been the center of attention mainly because of the simplicity they bring into the fuel cell industry. Their main advantage is the elimination of balance-of-plant subsystems such as the liquid coolant loop, heat exchanger...

... PEM fuel cell Air cooling Thermal management Forced convection Heat transfer Numerical modeling Computational Analysis of Heat Transfer in Air-cooled Fuel Cells S. Shahsavari Mechatronic Systems Engineering, School of Engineering Science, Simon Fraser University, BC, Canada sshahsav@sfu.ca M...

... A one-dimensional, steady-state, two-phase, isothermal numerical simulations were performed to investigate the effect on cell performance of a PEM fuel cell under non-uniform porosity of gas diffusion layer. In the simulation, the non-uniform porosity of gas diffusion layer was taken...

... Effects of mechanical compression and PTFE content on the through-plane gas permeability of gas diffusion layers (GDLs) of PEM fuel cells are investigated both experimentally and theoretically. A new test bed is designed and built which allows pressure drop and air flow rate measurement...

... Electrochemical Impedance Spectroscopy Diagnosis PEM fuel cell Stack 1 FINAL PAPER Proceedings of the ASME 2010 Eight International Fuel Cell Science, Engineering and Technology Conference FuelCell2010 June 14-16, 2010, Brooklyn, New York, USA Paper Number: FuelCell2010-33232 A New High Voltage Impedance...

... Carbon based bipolar plates and O-rings are key components and account for most weight and about half cost of a polymer electrolyte membrane (PEM) fuel cell stack. One function of bipolar plates is to channel fluids through a PEM fuel cell stack, and O-rings are used to avoid leaks...

... Endplate design is important to the structural safety and the performance of the proton exchange membrane (PEM) fuel cells. In this paper, an organized design and analysis method is proposed to improve the endplate design. The 3D model for finite element analysis is constructed automatically...

... The energy generated by PEM fuel cells can be used in many different applications with emphasis to commercial power generation and automotive application. It requires the integration of various subsystems such as chemical, mechanical, fluid, thermal and electrical ones. Their electrical...

... This paper studies the analysis and design of a proton exchange membrane (PEM) fuel cell stack. The aim of this study is to recognize the structural behaviour of PEM fuel cell under the steady state operation by using finite element analysis (FEA). First, the solid model of the PEM fuel cell...

... This paper investigated the effects of gas and liquid water flow on the performance of a polymer electrolyte membrane (PEM) fuel cell using cells to allow direct observation of the phenomena in the cell and measurements of the local current density and the local pressure loss. The experimental...

... predictions for a wide range of contacting pressures and materials. 25 11 2008 Contact Resistance PEM Fuel Cell Gas Diffusion Layer Bipolar Plate Fractal Surface Theoretical Modeling Second International Conference on Fuel Cell Science, Engineering and Technology Copyright © 2004...

... Cooling system is essential for high power fuel cells to maintain cells temperature in an acceptable limit. In this paper a suitable cooling system for the PEM fuel cell has been designed and optimized. The design includes the number of the cooling plates, the proper circuit of the cooling...

... An increase in pressure drop on the cathode side of PEM fuel cell is a reliable indicator of PEM fuel cell flooding. Flooding, i.e., liquid water accumulation inside the cell causes a rather erratic cell potential behavior — steady voltage drops followed by sudden voltage increases. The pressure...

..., covering larger area of the surface of gas diffusion layer in the hydrophobic separator-channels, but the drain performance of liquid water is superior. PEM fuel cell Lattice Boltzmann method Two-phase flow Wettability wetta the li nels, and, diffu hand surfa chan K phas INTR W perfo (PEM main...

... PEM fuel cells are promising candidate as most environmentally friendly power source for transport and stationary cogeneration applications due to its high efficiency, high power density, fast startup and system robustness. But the PEM fuel cell is still too expensive for widespread...

... the conductivity of the PBI membrane. Further, results demonstrate that when the catalyst region is well utilized, increasing the catalyst activity results in only a small improvement in performance. 15 09 2008 Intermediate Temperature PEM Fuel Cell Mathematical Modeling Polybenzimidazole PBI...

... and how it impacts the efficiency and performance of the device. The purpose of this work is to combine a subset of previously reported results and determine whether they can be incorporated into a single PEM fuel cell to further increase the performance above and beyond the increase obtained...

... The performance of Cu-Ce-Al-oxide and Cu-Cr-Al-oxide catalysts of varying compositions prepared by co-precipitation method was evaluated for the PEM fuel cell grade hydrogen production via oxidative steam reforming of methanol (OSRM). The limitations of partial oxidation and steam reforming...