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18. Methanol catalytic micro-combustor with pervaporation-based methanol supply system

Author

Zhaochun Zhang, Zongtao Li, Jun Deng, Kairui Tang, Wei Yuan, and Tang Yong

Subjects
Methanol reformer, Waste management, 020209 energy, General Chemical Engineering, 02 engineering and technology, General Chemistry, Combustion, Industrial and Manufacturing Engineering, chemistry.chemical_compound, Direct methanol fuel cell, chemistry, Chemical engineering, 0202 electrical engineering, electronic engineering, information engineering, Combustor, Environmental Chemistry, Methanol, Pervaporation, Vaporizer, Thermal analysis
Abstract

A catalytic micro-combustor using a pervaporation membrane as the passive methanol vaporizer is developed for direct methanol fuel cell (DMFC) applications, which is able to realize self-starting in an ambient environment. The methanol feed rate and the membrane diffusion coefficient related to the permeation flux are experimentally evaluated. Results indicate that the air feed rate (AFR) has positive effects on enhancing the methanol production and also increasing the catalyst temperature. A higher AFR promotes vapor generation and improves the combustion rate, thereby facilitating a higher start-up performance of the combustor. The infrared thermal analysis verifies the positive effect of increasing the AFR on the status of heat production and distribution. Results also validate the feasibility of changing the operating orientation of the combustor, which illuminates its potential use for portable applications. The online fuel cell tests validate that this combustor is viable to be used as a heat generator for a vapor-feed DMFC.

Published
2016

20. Performance of a catalytic micro-combustor based on Pt/Al2O3/Ni for methanol fuel cell application.

Author

Yuan, Wei, Deng, Jun, Zhou, Bo, Zhang, Zhao-chun, and Tang, Yong

Subjects
*COMBUSTION chambers, *PLATINUM catalysts, *ALUMINUM oxide, *METHANOL fuel industry, *FUEL cells
Abstract

Highlights: [•] A catalytic micro-combustor is designed for methanol fuel cells. [•] The combustor uses Pt/Al2O3/Ni to provide catalysis for methanol combustion. [•] The effects of Pt and Al2O3 loadings and methanol feeding mode are evaluated. [•] The feasibility of self-combustion based on heat recirculation is validated. [Copyright &y& Elsevier]

Published
2014
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