Abstract
A methanol reformer was designed, built and tested, which allows hydrogen production for high temperature PEM fuel cells for mobile applications applying micro-structured plate heat-exchanger technology and a novel, highly active catalyst formulation for oxidative steam reforming of methanol at temperatures exceeding 300°C. It is one of the first micro-structured methanol reformers with integrated anode off-gas combustion, which works in the kW scale. The reformer was operated under conditions of start-up, steady state and under dynamic conditions, in connection with a 1kW high temperature PEM fuel cell and finally integrated into a fuel processor, which contained an external evaporator and a heat-exchanger for super-heating the reformer feed. The thermal power of the hydrogen produced by the reformer amounted to 20kWthermal, which corresponds to 6.5kWel of a fuel cell at 40% efficiency and 80% hydrogen utilization.
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