Modelling pressure distribution and anode/cathode streams vapour-liquid equilibrium composition in liquid feed direct methanol fuel cells

A model is presented to predict the local pressure and chemical composition in the anode and cathode sides of a liquid feed direct methanol fuel cell. The model is based on the homogeneous two-phase how theory and mass conser vation equation, which describes the hydraulic behaviour of an experimental large cell. The model allows an assessment of the effect of the operating parameters: inlet temperature, current density, flow rates and pressure, on the pressure losses, fluid compositions and chemical equilibrium. (C) 2000 Elsevier Science S.A. All rights reserved.