دانلود مقاله ISI انگلیسی شماره 153878
ترجمه فارسی عنوان مقاله

ویژگی های انتقال جرم و قدرت مخزن مخلوط با رشتون و پروانه منحنی تیغه

عنوان انگلیسی
Mass transfer and power characteristics of stirred tank with Rushton and curved blade impeller
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
153878 2017 8 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Engineering Science and Technology, an International Journal, Volume 20, Issue 2, April 2017, Pages 730-737

پیش نمایش مقاله
پیش نمایش مقاله  ویژگی های انتقال جرم و قدرت مخزن مخلوط با رشتون و پروانه منحنی تیغه

چکیده انگلیسی

Present work compares the mass transfer coefficient (kLa) and power draw capability of stirred tank employed with Rushton and curved blade impeller using computational fluid dynamics (CFD) techniques in single and double impeller cases. Comparative analysis for different boundary conditions and mass transfer model has been done to assess their suitability. The predicted local kLa has been found higher in curved blade impeller than the Rushton impeller, whereas stirred tank with double impeller does not show variation due to low superficial gas velocity. The global kLa predicted has been found higher in curved blade impeller than the Rushton impeller in double and single cases. Curved blade impeller also exhibits higher power draw capability than the Rushton impeller. Overall, stirred tank with curved blade impeller gives higher efficiency in both single and double cases than the Rushton turbine