Evaporation analysis of different fuels in evaporator coil of steam reformer for stationary PEM fuel cell systems

摘要: Abstract Numerical simulations are performed to investigate the evaporation behavior of various fuels in evaporator coil steam reformer used for hydrogen gas production purposes a stationary proton exchange membrane (PEM) fuel cell system. The consider five different fuels, namely three methanol-water mixtures (50%:50%, 62%:38% and 75%:25%), pure methanol, ethanol, respectively. For all operating temperatures, ethanol exhibits lowest flow rate due its relatively higher dynamic viscosity. mixtures, temperature increases from 473 K 547 K as methanol content 50% 75%. Moreover, have temperatures 609 K 713 K, Of achieves full vaporization (i.e., no water content) within shortest distance (543 mm). outlet vaporized (713 K) is highest considered fuels. Overall, simulation results indicate that yields efficiency, therefore most suitable steam-reforming PEM applications.