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URN etd-0729105-140516 Statistics This thesis had been viewed 2628 times. Download 1090 times. Author Chih-Chang Lin Author's Email Address firstname.lastname@example.org Department Chemical Engineering Year 2004 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 114 Title Performance Study of a 1 kW Methanol Steam Reformer Keyword Methanol Steam Reformer Methanol Steam Reformer Abstract In this study, a 1kW methanol steam reformer including an evaporating system was set up to study the performance of the commercial MDC-3 catalyst in carrying out the methanol steam reforming reaction. The uniform design (UD) method was adopted to locate the experiments to provide the identified model with rich information. The second-order regression model and the feedforward neural network (FNN) model were used to give the mapping between the inputs (the mole ratio of [H2O]/[CH3OH], the reacting temperature T, and the catalyst loading over methanol feed rate ) and the outputs (the hydrogen production rate , the conversion of methanol , and the yield of hydrogen ). The capability of the identified model was evaluated statistically and among the proposed models, the FNN model with four hidden nodes was found to explain the experimental data suitably including the recalls and the predictions.
During the experiments, hydrogen productivity ( FH2= 9.25×10-3 mol/s) was achieved at the condition FCH3OH=0.00386 mol/s, [H2O]/[CH3OH]=1.5 and T=562 K. This data proved that the built reactor system could provide a 1kW fuel cell with enough hydrogen consumption rate ( FH2=9.24×10-3 mol/s) if the fuel cell was operated at 70% efficiency.
Advisor Committee Jyh-Shyong Chang - advisor
none - co-chair
none - co-chair
Files Date of Defense 2005-07-06 Date of Submission 2005-07-29