TY - JOUR
T1 - A two-phase non-isothermal PEFC model: theory and validation
T2 - Theory and validation
AU - Vynnycky, Michael
AU - Noponen, M.
AU - Birgersson, E.
AU - Ihonen, J.
AU - Lundblad, A.
AU - Lindbergh, G.
PY - 2004/12
Y1 - 2004/12
N2 - A two-dimensional, non-isothermal, two-phase model of a polymer electrolyte fuel cell (PEFC) is presented. The model is developed for conditions where variations in the stream-wise direction are negligible. In addition, experiments were conducted with a segmented cell comprised of net flow fields. The, experimentally obtained, current distributions were used to validate the PEFC model developed. The PEFC model includes species transport and the phase change of water, coupled with conservation of momentum and mass, in the porous backing of the cathode, and conservation of charge and heat throughout the fuel cell. The current density in the active layer at the cathode is modelled with an agglomerate model, and the contact resistance for heat transfer over the material boundaries is taken into account. Good agreement was obtained between the modelled and experimental polarization curves. A temperature difference of 6°C between the bipolar plate and active layer on the cathode, and a liquid saturation of 6% at the active layer in the cathode were observed at 1 A cm-2.
AB - A two-dimensional, non-isothermal, two-phase model of a polymer electrolyte fuel cell (PEFC) is presented. The model is developed for conditions where variations in the stream-wise direction are negligible. In addition, experiments were conducted with a segmented cell comprised of net flow fields. The, experimentally obtained, current distributions were used to validate the PEFC model developed. The PEFC model includes species transport and the phase change of water, coupled with conservation of momentum and mass, in the porous backing of the cathode, and conservation of charge and heat throughout the fuel cell. The current density in the active layer at the cathode is modelled with an agglomerate model, and the contact resistance for heat transfer over the material boundaries is taken into account. Good agreement was obtained between the modelled and experimental polarization curves. A temperature difference of 6°C between the bipolar plate and active layer on the cathode, and a liquid saturation of 6% at the active layer in the cathode were observed at 1 A cm-2.
KW - Current Distribution Measurement
KW - Numerical Simulation
KW - PEFC
KW - Two-Phase Transport
KW - Water Management
UR - http://www.scopus.com/inward/record.url?scp=11844253802&partnerID=8YFLogxK
U2 - 10.1002/fuce.200400048
DO - 10.1002/fuce.200400048
M3 - Article
AN - SCOPUS:11844253802
SN - 1615-6846
VL - 4
SP - 365
EP - 377
JO - Fuel Cells
JF - Fuel Cells
IS - 4
ER -