SOFC Modeling in Femlab

摘要: This report describes a graduate thesis project for the Master of Science diploma from Engineering Physics program at Chalmers University Technology. It has been performed Volvo Technology Corporation with primary aim to model given Solid Oxide Fuel Cell design, Rutquist cell, in Femlab. The is intended provide information on current-voltage characteristics, power development and temperature profile, both during startup operation. secondary purpose was evaluate suitability Femlab this kind task. The initiated bibliographic research, which gave several theories parameters useful modeling different processes SOFC design. These models were then implemented Two separate modes created where operation cell respectively, simulated. assumed to be part larger system receive hot gases fuel reformer. heating process achieved by letting warm gas, 1073 K, enter electrodes via gas channels. chemical reactions begin when all parts structure had reached 1023 K. calculations showed that takes about one minute, most heat exchange place electrodes. resulting profiles mode demonstrate same range as other structures design very compact. dimensions cubic stack developing 10 kW maximum would be less than decimeter. The computational software advantages, but also shortcomings. Among advantages are flexibility module based short learning period needed solving simple problems. weaknesses include necessity good knowledge numerical solution methods, since many settings have adjusted models become more complex; especially error poor occasionally even missing. The presents theory physical ceramic cells. Suggestions improvements effects delimitations approximations used work discussed. Finally, recommendations future put forward.