Abstract
Modeling the transport phenomena in a fuel cell system is important to the development of fuel cells. Numerical models can be used to improve some important areas in PEMFCs design, such as water management, fuel cell thermal management, fuel cell stack design, and fuel delivery. The purpose of this work is to present a two-dimensional transient model of the gas flow in the fuel cell (PEMFC). The model includes various conservation equations such movement and energy equations. The governing equations were resolved by the finite volume method.
Highlights
PEFC is a device that converts chemical energy in fuels directly into electricity with high efficiency, no combustion or moving parts [1]
PEMFC has many advantages, including clean, efficient and high-power density, etc., and it is regarded as an ideal power source for vehicles in the future [2,3]
Modeling the transport phenomena in a fuel cell system is important to the development of fuel cells
Summary
PEFC is a device that converts chemical energy in fuels directly into electricity with high efficiency, no combustion or moving parts [1]. Water management is one of the critical issues in the performance modeling of a PEMFC. At high cell current densities, excessive water transport throughout the membrane and water production in the cathode catalyst layer result in mass transport limitations and flooded GDL gas pores with water. At low cell current densities membrane dehydration may occurs at the anode side resulting in membrane ohmic losses. These losses cause reduction of the PEMFC performance. Numerical models can be used to improve some important areas in PEMFCs design, such as water management, fuel cell thermal management, fuel cell stack design, and fuel delivery.
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