Theoretical Analysis on the Autothermal Reforming Process of Ethanol as Fuel for a Proton Exchange Membrane Fuel Cell System

[+] Author and Article Information
Alessandra Perna

Department of Industrial Engineering, University of Cassino, Via G. di Biasio, 43-03043 Cassino, Italyperna@unicas.it

J. Fuel Cell Sci. Technol 4(4), 468-473 (Apr 19, 2006) (6 pages) doi:10.1115/1.2756844 History: Received November 30, 2005; Revised April 19, 2006

The purpose of this work is to investigate, by a thermodynamic analysis, the effects of the process variables on the performance of an autothermal reforming (ATR)-based fuel processor, operating on ethanol as fuel, integrated into an overall proton exchange membrane (PEM) fuel cell system. This analysis has been carried out finding the better operating conditions to maximize hydrogen yield and to minimize CO carbon monoxide production. In order to evaluate the overall efficiency of the system, PEM fuel cell operations have been analyzed by an available parametric model.

Copyright © 2007 by American Society of Mechanical Engineers
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Figure 1

Schematic of a PEMFC power system

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Figure 2

Schematic of PEMFC+ATR processor unit

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Figure 3

Solid carbon deposition for different H2O∕EtOH molar ratios

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Figure 4

Effect of of ethanol preheat temperature on hydrogen yield in ATR reactor (TATR=700°C, TSTEAM=150°C, Tair=400°C)

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Figure 5

Effect of of air preheat temperature on hydrogen yield in ATR reactor (TATR=700°C, TEtOH=100°C, TSTEAM=150°C)

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Figure 6

Effect of steam preheat temperature on hydrogen yield in ATR reactor (TATR=700°C, TEtOH=100°C, Tair=400°C)

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Figure 8

Hydrogen mole flow in the reformate

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Figure 7

ATR reactor temperature at different molar ratios of feed streams

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Figure 9

Hydrogen yield for different ATR reactor temperatures

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Figure 10

Molar flow rate of ethanol to produce 1mol of hydrogen

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Figure 11

Thermal efficiency of ATR system

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Figure 12

Performance curves of PEMFC

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Figure 13

Efficiencies of PEMFC and PEMFC-ATR



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