A novel reformer design has been demonstrated that converts the methane required for a multi kilowatt SOFC stack. Results show the influence of temperature and the benefits of operating at elevated pressure on the reforming-catalyst fundamental reaction kinetics. Due to the high heat demand of the steam reforming reaction, efficient heat transfer between the SOFC stack and the reforming catalyst is essential. Parameters such as the volume/surface area ratio, choice of catalyst, and catalyst metal loading are key to the design, and these have been determined through a combination of computer modelling and experimental measurements. The thermal properties of the unit have been evaluated over a range of temperatures and fuel compositions that simulate system operating-conditions in the final product.
[1]
C. F. Curtiss,et al.
Molecular Theory Of Gases And Liquids
,
1954
.
[2]
Nigel P. Brandon,et al.
SOFC technology development at Rolls-Royce
,
2000
.
[3]
Dennis Witmer,et al.
Thermodynamic analysis of hydrogen production by steam reforming
,
2003
.
[4]
P. Irving,et al.
Steam Reforming of Hydrocarbon Fuels
,
2002
.
[5]
Edward L Cussler,et al.
Diffusion: Mass Transfer in Fluid Systems
,
1984
.
[6]
R. Peters,et al.
Internal reforming of methane in solid oxide fuel cell systems
,
2002
.
[7]
J. Rostrup-Nielsen,et al.
Internal steam reforming in fuel cells and alkali poisoning
,
1995
.
[8]
E. Riensche,et al.
Methane/steam reforming kinetics for solid oxide fuel cells
,
1994
.