کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
649198 | 884647 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental and numerical study on the flow fields in upper furnace for large scale tangentially fired boilers
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
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چکیده انگلیسی
Experimental and numerical study on the aerodynamic field has been carried out in a tangentially fired boiler model of a 600Â MW unit, with emphasis on the flow fields in upper furnace and the gas velocity nonuniformity in horizontal flue gas pass. The results show that there exists residual swirl intensity of nearly 20% at the entry of the plate zone in upper furnace for large scale tangentially fired boilers. And the flow fields are obviously different in the left and right sides of upper furnace and the gas velocity deviation is large in horizontal flue gas pass. Moreover, some new furnace arch structures and arrangements of division platen superheaters are proposed to effectively alleviate gas velocity deviation in horizontal flue gas pass for large scale tangentially fired boilers. The numerical results agree well with the experimental ones, which can give a good insight into the flow characteristics in upper furnace and a clear explanation on the forming mechanism of flue gas velocity and temperature deviation for large scale tangentially fired boilers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 29, Issue 4, March 2009, Pages 732-739
Journal: Applied Thermal Engineering - Volume 29, Issue 4, March 2009, Pages 732-739
نویسندگان
Yuegui Zhou, Tongmo Xu, Shien Hui, Mingchuan Zhang,