One-dimensional thermal model for direct methanol fuel cell stacks: Part II. Model based parametric analysis and predicted temperature profiles |
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| Affiliation: | 1. School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, China;2. Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes, Guangzhou 510275, China;1. Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, GSP-1, 119991 Moscow, Russian Federation;2. N.S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russian Federation;1. Excellence Group in Thermal Power and Distributed Generation (NEST), Federal University of Itajubá (UNIFEI) - Av. BPS, 1303, Bloco L7, CEP. 37500-903 Itajubá, MG - Brazil |
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| Abstract: | Using the one-dimensional thermal model for the direct methanol fuel cell (DMFC) (presented in Part 1), based on the differential thermal energy conservation equation, which describes the thermal behaviour of a DMFC stack comprised of up to 25 large (272 cm2) cells, temperature profiles are predicted along the stack length. The model is used to assess the effect of operating parameters (temperature gradient, current density, flow rate and pressure) on the temperature profile along the stack. In addition, it enables investigation of the stack thermal management and the effect of altering a number of systematic parameters such as the number of cells in the stack, the active and exposed area and the interactions between the physical properties of the various components. The model aids the fuel cell system designer to gain an insight in the stack structure and select materials and geometric configurations that are optimal from a thermal management point of view. |
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