کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8092105 | 1522004 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical simulation of radiation intensity of oxy-coal combustion with flue gas recirculation
ترجمه فارسی عنوان
شبیه سازی عددی شدت تابش احتراق اکسین زغال سنگ با احتراق گاز دودکش
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کلمات کلیدی
Weighted sum of gray gasesEDMFRCEddy dissipation modelWSGGCTFFGRRTEOxy-coal combustion - احتراق اکسی زغال سنگFlue gas recycle - بازیافت گاز دودکشCFD - دینامیک سیالاتComputational fluid dynamics - دینامیک سیالات محاسباتیRANS - رانRadiation intensity - شدت تابشCarbon capture - ضبط کربنAbsorption coefficient - ضریب جذبReynolds-averaged Navier–Stokes equations - معادلات ناییر استوکس به طور متوسط رینولدزRadiative transfer equation - معادله انتقال تابشی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
Oxy-fuel combustion is one of potential technologies for carbon dioxide (CO2) capture in fossil fuel fired power plants. Characterization of flue gas composition in the oxy-fuel combustion differs from that of conventional air-coal combustion, which results in the change of radiative heat transfer in combustion processes. This paper presents a numerical study of radiation intensity on lateral walls based on the experimental results of a 0.5Â MW combustion test facility (CTF). Differences in the oxy-coal combustion are analyzed, such as flue gas recycle, absorption coefficient and radiation intensity. The simulation results show that an effective O2 concentration ([O2]effective) between 29 and 33Â vol% (equivalent to the flue gas recycle ratio of 72-69%) constitutes a reasonable range, within this range the behavior of oxy-coal combustion is similar to air-coal combustion. Compared with the air-coal combustion, the lower limit (29Â vol%) of this range results in a similar radiative heat flux at the region closed to the burner, but a lower radiative heat flux in the downstream region of the CTF; the upper limit (33Â vol%) of this range results in a higher radiative heat flux at the region closed to the burner, while a similar radiative heat flux in the downstream region of the CTF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Greenhouse Gas Control - Volume 17, September 2013, Pages 473-480
Journal: International Journal of Greenhouse Gas Control - Volume 17, September 2013, Pages 473-480
نویسندگان
Yukun Hu, Jinyue Yan,