پديدآورندگان :
Alizadeh E نويسنده Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology, Fridonkenar , Barzegari M. M نويسنده Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology, Fridonkenar , Ghadimi M نويسنده Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology, Fridonkenar , Momenifar M نويسنده Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology, Fridonkenar , Saadat S. H. M نويسنده Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology, Fridonkenar
كليدواژه :
Clamping mechanism , PEM fuel cell , Contact pressure distribution , end plate
چكيده لاتين :
Clamping mechanisms is one of the most important parts of the proton exchange membrane fuel cells
(PEMFCs). It has significant effect on the contact pressure distribution over the active area of the
PEMFC. In this paper the pneumatic clamping mechanism was utilized to study the contact pressure
distribution over the active area. The end plate consists of two separate plates like a cylinder and a piston
and the applied pressure exerted pneumatically to the fuel cell assembly. The comparison between the
results of conventional bolts and nuts and pneumatically designed clamping mechanisms has been done
using an experimental setup. The experimental results obtained from the use of the embedded pressure
measurement films in the designed single setup. It was obviously concluded that the pressure distribution
for the pneumatically designed clamping mechanism was more uniform than the conventional bolts and
nuts clamping mechanisms. It is notable that by optimizing the pneumatically clamping mechanism it could be appropriate to produce uniform contact pressure particularly for the PEMFCs with large active
areas.
