ANALISA DISTRIBUSI AIR PADA CHANNEL PEMFC TERHADAP VARIASI VOLTAGE CURRENT COLLECTOR

Abstract

 Fuel cells are attractive and promissing power generation devices due to their high power density and low pollutan emissions. Compared to conventional chemical combustion system which are currently most common, a key benefit of fuel cell is theoretically high-energy efficiency (Li et al, 2010). A three-dimensional steady state model consisting of momentum,heat, species and charge conservation equations in combination with electrochemical equations has been developed. The design of the PEMFC involved electrolyte membrane, anode and cathode catalyst layers, anode and cathode gas diffusion layers, two collectors and serpentine micro-channels of air and fuel. The distributions of mass fraction, temperature, pressure drop and gas flows through the PEMFC were studied. The current density was predicted in a wide scope of voltage. The current density – voltage curve and power characteristic of the analysed PEMFC design were obtained. A validation study showed that the developed model was able to assess the PEMFC performance

Key words               : Proton Exchange Membrane Fuel Cells, flow field design