Mathematical Modeling and Simulation for Optimization of IDEAL-Cell Performance

The IDEAL-Cell is an innovative SOFC concept, comprising the anodic part of a proton conducting fuel cell (i.e., anode and protonic electrolyte) and the cathodic part of a solid oxide fuel cell (i.e., cathode and anionic electrolyte), connected through a porous composite central membrane of proton conducting and anion conducting materials where water recombination reaction between protons and oxygen ions occurs. A mathematical model for the description of transport phenomena and reactions in steady-state conditions is presented. The model is based on charge and mass balances in a continuum approach. Simulations are performed considering negligible polarization resistances due to electrochemical activations in order to evaluate the maximum performance of the cell. Simulations show that the IDEAL-Cell performance is comparable to that provided by the current state of the art for proton conducting fuel cells, and it may be further improved by reducing ohmic losses with thinner layers

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International audienc

SOFC 5 kW(e) CHP Field Unit: Effect of the Methane Dilution

International audienceTurboCare and Politecnico di Torino (Italy), have installed a SOFC laboratory in order to analyze the operation of two SOFC generators (Project EOS-100 kW and EBE-5 kW) built by Siemens Power Corporation (SPC). In the EBE project the installation of the SFC5 SOFC generator (3.5 kWe and 3 kWth) was carried out. To date, it has operated in the workshop canteen for more than 15,984 hours with very high reliability. The real stack is a complex system not installed in a Lab environment, and has several effects of not-homogeneity in terms of electrochemical response to fuel or air management modifications. Moreover, many of the parameters of the stack are not directly measurable, and have to be inferred by indirect measurements. In this paper, the analysis of the not homogeneous behaviour of the different segments of the complete stack is performed, through an experimental session using a not conventional fuel. The obtained data have been analyzed using the ANOVA for every dependent variable and a non-linear regression model for the voltage. Those models were used to evaluate the effect of the fuel modification on the local fuel utilization in different sectors of the stack

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Pubblicato on-line dalla SISVE

Mathematical modeling and simulation for optimization of IDEAL-Cell performance

The IDEAL-Cell is an innovative SOFC concept, comprising the anodic part of a proton conducting fuel cell (i.e., anode and protonic electrolyte) and the cathodic part of a solid oxide fuel cell (i.e., cathode and anionic electrolyte), connected through a porous composite central membrane of proton conducting and anion conducting materials where water recombination reaction between protons and oxygen ions occurs. A mathematical model for the description of transport phenomena and reactions in steady-state conditions is presented. The model is based on charge and mass balances in a continuum approach. Simulations are performed considering negligible polarization resistances due to electrochemical activations in order to evaluate the maximum performance of the cell. Simulations show that the IDEAL-Cell performance is comparable to that provided by the current state of the art for proton conducting fuel cells, and it may be further improved by reducing ohmic losses with thinner layers