INVESTIGADORES
FRANCESCONI Javier Andres
artículos
Título:
Effects of PEMFC operating parameters on the performance of an integrated ethanol processor
Autor/es:
JAVIER A. FRANCESCONI; MIGUEL C. MUSSATI; PIO A. AGUIRRE
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2010 vol. 35 p. 5940 - 5946
ISSN:
0360-3199
Resumen:
In this paper the performance of a complete fuel cell system processing
ethanol fuel has been analyzed as a function of the main fuel cell
operating parameters. The fuel processor is based on the steam reforming
process, followed by high- and low-temperature shift reactors, and
carbon monoxide preferential oxidation reactor, which are coupled to a
polymeric fuel cell (PEMFC). The goal was to analyze and improve the
fuel cell system performance by simulation techniques. PEMFC operation
has been analyzed using an available parametric model, which was
implemented within HYSYS environment software. Pinch Analysis concepts
were used to investigate the process energy integration and determine
the maximum efficiency minimizing ethanol consumption. The system
performance was analyzed for the SR-12 Modular PEM Generator, the
Ballard Mark V fuel cell and the BCS 500 W stack. The net system
efficiency is dependent on the required power demand. Efficiency values
higher than 50% at low loads and less than 30% at high power demands are
computed. In addition, the effect of fuel cell temperature, pressure
and hydrogen utilization was analyzed. The trade-off between the
reformer yield and the fuel cell performance defines the optimal
operation pressure. The cell temperature determines operating zones
where the water, involved in the reforming reactions, can be produced or
demanded.