کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9692826 | 1458846 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flash evaporation from a water pool: Influence of the liquid height and of the depressurization rate
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This article presents a study about the influence of the initial water height and of the depressurization rate on the flash evaporation of a water film. Experimental study is carried out with initial water height ranging from 25 to 250 mm, superheats between 2 and 44 K, and an initial liquid temperature from 45 to 85â°C. Visualization of the phenomenon using a CCD camera lets us firstly point out the influence of the initial water level on the flashing phenomenon in a qualitative way. Thermal balance allows us to correlate the mass evaporated with the liquid temperature, and then to quantify the influence of the initial water height on several parameters: maximal amplitude of the phenomenon, flashing time, liquid mass evaporated. We also analyse influence of relatively low depressurization rate (from 0 to 3.5 barâ
sâ1) on the flashing time, the mass evaporated, and the mass flow rate. Finally, dimensionless correlations between these parameters are proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 44, Issue 10, October 2005, Pages 953-965
Journal: International Journal of Thermal Sciences - Volume 44, Issue 10, October 2005, Pages 953-965
نویسندگان
D. Saury, S. Harmand, M. Siroux,