کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760253 | 1498045 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A natural-circulation fuel delivery system for direct methanol fuel cells
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A passive fuel delivery system utilizing a natural-circulation mechanism for direct methanol fuel cells (DMFC) is presented in this paper. It was shown that this novel methanol solution feed system was capable of achieving a performance comparable to that of an actively pumped system for different methanol concentrations ranging from 0.5 to 4.0Â M. The theoretical and experimental results showed that the natural-circulation feed flow rate increased with the increase in current density. As a result, the natural-circulation fed DMFC can operate with the fuel delivered in an electrical load-on-demand mode. The feed rates can be optimized for different methanol concentrations by selecting the right tubing size and length of the flow loop. The experimental results also showed that the performance was unstable when the fuel cell operated at low current densities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 147, Issues 1â2, 9 September 2005, Pages 196-202
Journal: Journal of Power Sources - Volume 147, Issues 1â2, 9 September 2005, Pages 196-202
نویسندگان
Q. Ye, T.S. Zhao,