Fuel effects on start-up energy and efficiency for automotive PEM fuel cell systems

摘要: Abstract This paper investigates the effects of various fuels on hydrogen production for automotive PEM fuel cell systems. Gasoline, methanol, ethanol, dimethyl ether and methane are compared their processor size, start-up energy overall efficiencies 50 kWe processors. The is required to raise temperature from ambient (20 °C) that steady-state operating temperatures. modeled consisted an equilibrium-ATR (autothermal), high-temperature water gas shift (HTS), low-temperature (LTS) preferential oxidation (PrOx) reactors. individual reactor volumes with methane, ether, methanol ethanol were scaled relative a gasoline-fueled meeting 2010 DOE technical targets. were, 25.9 L 30.8 L 42.5 L gasoline, 43.7 L 45.8 L methane. calculated energies 2712 kJ 3423 kJ 6632 kJ 7068 kJ gasoline 7592 kJ efficiencies, correcting using drive cycle 33 miles driven per day, 38.5% 38.3% 37% 34.5% 33.2% assuming efficiency 44% each fuel.