Numerical Analysisof Proton Exchange Membrane Fuel Cell with Interdigitated Flow Field

• Main Authors: Shihying, Huang, 黃世穎
• Other Authors: C.S.Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/85332513323648098429

碩士 === 元智大學 === 機械工程學系 === 92 === Among various modes of energy generation nowadays, fuel cell is the one valued most by all circles. Fuel cell has the benefits of high capacity, high efficiency as well as low pollution. Furthermore, with the simple structure, fuel cell is applied extensively by many industries and is known as one of the three major scientific inventions of the 21st century. The proton exchange membrane fuel cell with interdigitated flow field cathode side is mainly discussed in this research by means of constructing a three dimension value model and controlling the continuity, momentum, and energy equation to calculate various important parameters, such as pressure, velocity, density and so on. In addition, the efficiency of electric power generation can be inferred by observing the thickness of oxygen amassing at the membrane where proton proceeds exchange and so does the interrelations between conditions and the efficiency of fuel cell by comparing the concentrations. Can learn by the numerical simulation result, the greater pressure drop, the electrode porosity ε(%) greater than 40%, the smaller ratio of flow field height/width, the gas diffusion layer under the thin situation nearly, there is better power generating efficiency.