کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7716842 | 1497473 | 2014 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modeling and optimum design of hybrid solid oxide fuel cell-gas turbine power plants
ترجمه فارسی عنوان
مدلسازی و طراحی بهینه از نیروگاه های توربین سلول های سوختی هیبرید جامد اکسید سوخت
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کلمات کلیدی
تفاوت محدود، سلول سوختی اکسید جامد، انتقال گرما، الکتروشیمیایی، بهینه سازی، نیروگاه،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
An integrated solid oxide fuel cell-gas turbine process is modeled and analyzed. A two dimensional finite difference model is developed for planar solid oxide fuel cells (SOFCs), considering co- and counter-flow configurations. In this model, the SOFC is divided into five control volumes. Mass and heat transfer and electrochemical processes are examined and such factors as electrochemical reactions, conduction in the solid structure, convection in channels and between channels and solid structures and polarization losses are discussed. Also, the influences of temperature, pressure, current density and fuel utilization on voltage and electric power for both configurations are investigated. The results show that voltage and electric power increase as pressure and temperature rise, for both configurations. The optimum current density is determined to be 9000Â AÂ mâ2 (for co- and counter-flow). Also, the voltage in both configurations decreases as fuel utilization increases. Furthermore, an investigation of the effect of input temperature, pressure and current density on system performance and number of cells required demonstrates that the power output should be fixed at 200Â kW. With increasing temperature, pressure and mole fraction of H2, the number of cells required decreases and the electrical and overall efficiencies both increase. The optimum number of cells (co-flow) and current density are found to be 2122 and 8000Â AÂ mâ2, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 36, 12 December 2014, Pages 21196-21214
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 36, 12 December 2014, Pages 21196-21214
نویسندگان
Mehdi Mehrpooya, Sepide Akbarpour, Ali Vatani, Marc A. Rosen,