Fuel cell is a kind of devices that generates electricity and heat via electrochemical reactions. Accompanying the development of relevant applications, the efficiency issue has received more and more interest. In the duration of electricity generation, a variety of polarization losses will disperse in the form of heat. Higher electricity efficiency leads to lower heat generation, and vice versa. The amount of the generated heat correlates with the temperature gradient of the fuel flow along the stack channel. For a direct methanol fuel cell (DMFC), both the fuel utilization efficiency and fuel concentration are essential indices for the system. However, it is much complicated to acquire them. As a result, it will be a feasible and valuable approach to correlate these indices with the temperature gradient. In this work, an energy balance model of a DMFC is established to investigate factors that contribute thermal influences on the system. Based on the model, the relationship between efficiency and temperature gradient is derived. The proposed model may serve as the basis of water and thermal management strategies, which are beneficial for enhancing the performance and reliability of such a power generation system.
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ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability
August 7–10, 2011
Washington, DC, USA
Conference Sponsors:
- Advanced Energy Systems Division
ISBN:
978-0-7918-5469-3
PROCEEDINGS PAPER
An Energy Balance Model for a Direct Methanol Fuel Cell Available to Purchase
Yu-Jen Chiu,
Yu-Jen Chiu
Technology and Science Institute of Northern Taiwan, Taipei, Taiwan
Search for other works by this author on:
Yen-Ling Lin
Yen-Ling Lin
Technology and Science Institute of Northern Taiwan, Taipei, Taiwan
Search for other works by this author on:
Yu-Jen Chiu
Technology and Science Institute of Northern Taiwan, Taipei, Taiwan
Yen-Ling Lin
Technology and Science Institute of Northern Taiwan, Taipei, Taiwan
Paper No:
FuelCell2011-54376, pp. 645-651; 7 pages
Published Online:
March 22, 2012
Citation
Chiu, Y, & Lin, Y. "An Energy Balance Model for a Direct Methanol Fuel Cell." Proceedings of the ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability. ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Washington, DC, USA. August 7–10, 2011. pp. 645-651. ASME. https://doi.org/10.1115/FuelCell2011-54376
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