Thermal management of a PEMFC stack by 3D nodal modeling

Validated Leverett Approach for Multiphase Flow in PEFC Diffusion Media

“…One important effect that still must be better understood is that of temperature. As repeatedly expressed in the literature, [13][14][15][16] thermal management is closely coupled with delicate water balance, which is essential to high performance and longevity of PEFCs. In terms of transport, the fuel cell DM is often exposed to a nonisothermal environment, causing significant changes in the heat and mass transport process.…”

“…In terms of transport, the fuel cell DM is often exposed to a nonisothermal environment, causing significant changes in the heat and mass transport process. 15,16 Such a variation in temperature influences the governing transport properties, including permeability, the capillary pressure-saturation relation, fluid viscosity, and the surface energy of the medium, thereby directly affecting the capillary transport characteristics in fuel cell or other porous media. [17][18][19][20][21] Moreover, existing efforts in soil science [22][23][24][25][26][27][28] have revealed that the variation in equilibrium temperature is the dominating factor determining the equilibrium capillary pressure.…”

Thermal management system modeling of a water-cooled proton exchange membrane fuel cell

“…However, some models are more complex. Dumercy [8,9] proposed a 3D thermal modeling by a nodes network model for two PEMFC of 150 and 500 W to describe the temperature and the heat flux distribution in the fell cell stack. Tiss [10], basing on the theory of heat and mass transfer, proposed a dynamic model for the thermal system of a PEMFC, which showed that the fuel cell temperature is a significant function for manipulative the fuel cell output voltage and gas flow.…”

Application of a thermally conductive pyrolytic graphite sheet to thermal management of a PEM fuel cell

“…The problem of thermal management in a PEMFC always accompanies that of water management and mass transport limitations. Since an understanding of the coupled fluid flow, heat and mass transfer processes within a single fuel cell and a fuel cell stack are of critical importance to the optimization of their designs, thermal and water management has been the subject of several fundamental experiment and theoretical studies [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Thermal management is well understood to remove waste heat properly to ensure that the PEMFC operates within a specific temperature range.…”