A non-isothermal two-dimensional two-phase numerical model is developed in this paper to investigate the heat generation and transport processes in a direct methanol fuel cell with anisotropic gas diffusion layers (GDLs). Thermal contact resistances at the GDL/CL (catalyst layer) and GDL/Rib interfaces, and the deformation of GDLs are considered together with the inherent anisotropy of the GDL. Latent heat effects due to condensation/evaporation of water and methanol between liquid and gas phases are also taken into account. Formulation of the two-phase mass transport across the membrane electrode assembly (MEA) is mainly based on the classical multiphase flow theory in the porous media. The numerical results show that the overall heat flux in MEA is mainly contributed to heat generation in anode and cathode CLs. And the three anisotropic factors of the GDLs, including the inherent anisotropy, the spatially varying contact resistances, and the deformation of GDLs, have a strong impact on the heat transport processes in the DMFC by altering the distribution of temperature across the MEA.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4940-8
PROCEEDINGS PAPER
Modeling of Heat Transport in a Direct Methanol Fuel Cell With Anisotropic Gas Diffusion Layers
Ya-Ling He,
Ya-Ling He
Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Zheng Miao,
Zheng Miao
Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Wen-Quan Tao
Wen-Quan Tao
Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Ya-Ling He
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Zheng Miao
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Wen-Quan Tao
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Paper No:
IHTC14-22102, pp. 1-11; 11 pages
Published Online:
March 1, 2011
Citation
He, Y, Miao, Z, & Tao, W. "Modeling of Heat Transport in a Direct Methanol Fuel Cell With Anisotropic Gas Diffusion Layers." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 5. Washington, DC, USA. August 8–13, 2010. pp. 1-11. ASME. https://doi.org/10.1115/IHTC14-22102
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