کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1292678 | 973394 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two-dimensional transient model of a cascaded micro-tubular solid oxide fuel cell fed with methane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Two-dimensional transient model of a cascaded micro-tubular solid oxide fuel cell fed with methane Two-dimensional transient model of a cascaded micro-tubular solid oxide fuel cell fed with methane](/preview/png/1292678.png)
چکیده انگلیسی
A two-dimensional transient simulation model for a cascaded (10 cascades) micro-tubular solid oxide fuel cell (SOFC) and a common micro-tubular SOFC with a preheater tub was developed to calculate the distribution of gas species, the local current, voltage and temperature. The goal was to compare these two different SOFC designs under steady state and load change conditions with respect to power density. Steady state simulation results have shown that the cascaded cell concept is able to operate at higher average cell voltages in principle. Compared to the cascaded cell concept the average ohmic anodic and cathodic resistance of the common cell has to be 84 times lower to reach the same average power density at an average voltage of 0.7Â V. The cascaded cell concept gives the opportunity to operate at a higher average voltage than the lowest Nernst voltage offers. This could be interesting to realize high fuel utilization (>85%). Transient simulation results have shown that both cell concepts respond within 10Â s on an electrical load change. The cascaded cell concept has shown a lower temporary voltage drop than the common cell concept. This paper describes the theory, solution techniques and results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 157, Issue 1, 19 June 2006, Pages 325-334
Journal: Journal of Power Sources - Volume 157, Issue 1, 19 June 2006, Pages 325-334
نویسندگان
Pedro Nehter,