Abstract
Models for auxiliary power units (APU) based on-board hydrocarbon fuel processors (FP) for hydrogen production for polymer-electrolyte-membrane (PEM) fuel cells were coded in Matlab/Simulink software considering the following: (i) either an autothermal (ATR) or a steam reforming (SR) unit fed with several fuels (road distribution net fuels: gasoline, light diesel, heavy diesel, and biodiesel; reference fuels in internal combustion enginer (ICE) applications: isooctane for gasoline and cetane for diesel oils); (ii) the secondary units for the CO cleanup process (water gas shift and CO preferential oxidation reactors: WGS and CO−PROX); (iii) the auxiliary units for the balance of plant of the whole system (afterburner, heat exchangers, water recovery radiators, air compressor, and water and fuel pumps), necessary to properly operate the FP; and (iv) the PEM fuel cell. First, a study on the feasibility of the substitution during the simulations of the real liquid fuels available for automotive traction (...
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