کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
207804 461226 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental studies of flame stability and emission characteristics of simple LPG jet diffusion flame
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental studies of flame stability and emission characteristics of simple LPG jet diffusion flame
چکیده انگلیسی

In the present study, experiments were carried out to measure the lift-off height, HL; flame length, Lf and blow-off velocity for a simple LPG (liquefied petroleum gas) jet diffusion flames. It is observed that lift-off height is proportional to the fuel exit velocity, Uf. A semi-empirical correlation between lift-off height and global strain rate, Uf/Df is proposed. Two regimes identified either as buoyancy or momentum dominated were characterized by Froude number, Fr. For momentum dominated jet diffusion flames, Lf/Df remains almost constant and therefore is independent of the Froude number. The NOx emissions, expressed in terms of emission index, EINOx is found to decrease with Uf. This decreasing trend is consistent with the concept that increasing jet velocity reduces the residence time as reported in the literature. The present data is also compared with the available data of propane gas and found to be in good agreement well particularly in trend wise. Besides these data, EINOx scaling law is also reported in the present study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 86, Issues 10–11, July–August 2007, Pages 1545–1551
نویسندگان
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