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Effects of assembly pressure on PEM fuel cell performance by taking into accounts electrical and thermal contact resistances
- Source :
- Energy, Energy, Elsevier, 2019, ⟨10.1016/j.energy.2019.05.031⟩
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
Abstract
- In this paper, a three-dimensional multiphase model of the polymer exchange membrane (PEM) fuel cell is simulated to study the effect of assembly pressure on the contact resistance between the gas diffusion layer (GDL) and bipolar plate (BP) interface. The results reveal that the increase of assembly pressure is associated with a decrease in the contact resistance between the GDL and BP interface, which results in reaching an ideal fuel cell performance. The performance improves until the assembly pressure of 4.5 MPa and it slightly drops with a clamping pressure of 5.5 MPa in the ohmic loss region of the polarization curve. Additionally, the variation of the electrical field in a cross-section of the channel length shows that the intrusion of GDL into the flow channel increases with increasing assembly pressure; consequently, the maximum electrical current will increase. The cell temperature rises at higher assembly pressure when considering the thermal contact resistance. This increase is higher on the cathode side because of the existence of the reaction heat source. Additionally, it is found that the distribution of electrical potential and oxygen concentration is more uniform at higher clamping pressure. This results in the development of the PEM fuel cell life cycle.
- Subjects :
- Materials science
020209 energy
Proton exchange membrane fuel cell
02 engineering and technology
7. Clean energy
Industrial and Manufacturing Engineering
law.invention
020401 chemical engineering
Electrical resistance and conductance
law
0202 electrical engineering, electronic engineering, information engineering
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph]
0204 chemical engineering
Electrical and Electronic Engineering
Composite material
Ohmic contact
ComputingMilieux_MISCELLANEOUS
Civil and Structural Engineering
Thermal contact conductance
Mechanical Engineering
Contact resistance
Thermal contact
Building and Construction
Pollution
Cathode
Clamping
General Energy
Subjects
Details
- Language :
- English
- ISSN :
- 03605442
- Database :
- OpenAIRE
- Journal :
- Energy, Energy, Elsevier, 2019, ⟨10.1016/j.energy.2019.05.031⟩
- Accession number :
- edsair.doi.dedup.....32321596971b6663471a5a5ac711c4db