Carbon monoxide adaptive observer for fuel cell fault detection

2007 ◽  
Author(s):  
Damiano Di Penta ◽  
Karim Bencherif ◽  
Qinghua Zhang ◽  
Michel Sorine
Keyword(s):  
Carbon Monoxide ◽  
Fuel Cell ◽  
Fault Detection ◽  
Adaptive Observer

Miniature Fuel Processors for Portable Fuel Cell Power Supplies

2002 ◽  
Vol 756 ◽  
Author(s):  
Jamie Holladay ◽  
Evan Jones ◽  
Daniel R. Palo ◽  
Max Phelps ◽  
Ya-Huei Chin ◽  
...  
Keyword(s):  
Water Management ◽  
Carbon Monoxide ◽  
Fuel Cell ◽  
Power Loss ◽  
Power Supplies ◽  
The Novel ◽  
Methanol Reforming ◽  
Fuel Cell Stack ◽  
Portable Power ◽  
Novel Catalyst

ABSTRACTMiniature and microscale fuel processors that incorporate novel catalysts and microtechnology-based designs are discussed. The novel catalyst allows for methanol reforming at high gas hourly space velocities of 50,000 hr-1 or higher while maintaining a carbon monoxide levels at 1% or less. The microtechnology-based designs extremely compact and lightweight devices. The miniature fuel processors, with a volume less than 25 cm3, a mass less than 200 grams, and thermal efficiencies of up to 83%, nominally provide 25 to 50 watts equivalent of hydrogen, which is ample for the portable power supplies described here. With reasonable assumptions on fuel cell efficiencies, anode gas and water management, parasitic power loss, the energy density was estimated at 1700 Whr/kg. These processors have been demonstrated with a CO cleanup method and a fuel cell stack. The microscale fuel processors, with a volume of less than 0.25 cm3 and a mass of less than 1 gram, are designed to provide up to 0.3 watt equivalent of power with efficiencies over 20%.

scholarly journals Electricity generation from carbon monoxide and syngas in a microbial fuel cell

2011 ◽  
Vol 90 (3) ◽  
pp. 827-836 ◽  
Author(s):  
Abid Hussain ◽  
Serge R. Guiot ◽  
Punita Mehta ◽  
Vijaya Raghavan ◽  
Boris Tartakovsky
Keyword(s):  
Carbon Monoxide ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electricity Generation

Basic Fuel Cell Electrochemical Thermodynamic Studies: Utilization and Thermodynamic Performance for Various Fuels

2008 ◽  
Author(s):  
Wolfgang Winkler ◽  
Mark Williams
Keyword(s):  
Carbon Monoxide ◽  
Fuel Cell ◽  
Hydrocarbon Fuels ◽  
Cathode Side ◽  
Operational Parameters ◽  
Proton Conducting ◽  
Thermodynamic State ◽  
Excess Air ◽  
Thermodynamic Performance ◽  
Ion Conducting

This study gives information of new opportunity fuels having increasing importance is all future energy scenarios. It compares the basic thermodynamic performance of fuel cells with various fuels — ammonia, methanol, hydrogen, carbon monoxide and carbon(s). For both oxygen ion conducting and proton conducting fuel cell, where applicable, its performance as a function of utilization is considered. The fuel cell itself will be considered as a reversible electrochemical reactor, generating power and mixing substances, but without further restrictions on its design. The thermodynamic state and the excess air are further parameters of variation. The consequences of the use of air and oxygen are considered as well. The principal reversible combustion of the fuel is the base of the operation of any fuel cell. The utilisation of the fuel changes the gas concentrations on the anode and cathode side depending on the ionic transport mechanism. The reversible SOFC model was used to describe the influence of the fuel utilisation, the thermodynamic state, and the operational parameters for the fuel H2 on the local Nernst voltage in previous publications. This work has been expanded to proton conducting cells and different opportunity and hydrocarbon fuels. Ammonia is quite different and at lower utilizations appears to be a superior fuel. Methanol is superior to methane over a wide utilization range. Hydrocarbons like methane have a smaller voltage decrease during utilization than hydrogen and carbon monoxide. Excess air larger than two has a small impact on voltage loss. Direct utilization of hydrocarbon fuels without reforming is a key development path toward higher efficiency.

LPV observer design for PEM fuel cell system: Application to fault detection

2011 ◽  
Vol 196 (9) ◽  
pp. 4298-4305 ◽  
Author(s):  
S. de Lira ◽  
V. Puig ◽  
J. Quevedo ◽  
A. Husar
Keyword(s):  
Fuel Cell ◽  
Fault Detection ◽  
System Application ◽  
Pem Fuel Cell ◽  
Cell System ◽  
Observer Design ◽  
Fuel Cell System
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