Material and Energy Balance of Methanol Feed 1 kW SOFC Power System
A steady state material and energy balance was carried out throughout the entire SOFC system. The polarization curve and operating point used in the model calculation is depicted on Fig. 3. This curve was calculated from equation (1). The Vr, DVact, DVohm, DVconcare equilibrium cell voltage, voltage loss due to electrochemical reaction, voltage loss due to internal resistance, voltage loss due to concentration polarization.
Major heat fluxes among each components and temperature of each streams were calculated. Major efficiency losses were also identified. Typical result is given on Fig. 4. Experimental data were collected. This model and parameters used in the calculation will be adjusted to fit the measured result.
Authors wish to thank the financial support from BOE/MOEA (Bureau of Energy, Ministry of Economic Affairs) and NSC (National Science Council). This work was carried out by researchers under the collaboration among Hephas Energy, Industrial Technology Research Institute/Green Energy and Environment Research Laboratory, National United University, Dept. Energy Engineering, and Taiwan Power Company.