01 مهر 1400
احمد آذري

احمد آذری

مرتبه علمی: دانشیار
نشانی: دانشکده مهندسی نفت، گاز و پتروشیمی - گروه مهندسی شیمی
تحصیلات: دکترای تخصصی / مهندسی شیمی
تلفن: 07733441913
دانشکده: دانشکده مهندسی نفت، گاز و پتروشیمی

مشخصات پژوهش

عنوان An experimental comparison of water based alumina and silica nanofluids heat transfer in laminar flow regime
نوع پژوهش مقالات در نشریات
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مجله Journal of Central South University
شناسه DOI
پژوهشگران احمد آذری (نفر اول) ، منصور کلباسی (نفر دوم) ، مسعود درخشنده (نفر سوم)

چکیده

Experimental investigations were carried out to determine the convective heat transfer performance and pressure drop of Al2O3/water and SiO2/water nanofluids flowing through a circular tube. Measurements show that the addition of small amounts of nano-sized Al2O3 particles to the base fluid increases heat transfer coefficients considerably, while the result for the silica nanofluids contradicts with the alumina nanofluids and this leads to some interesting results. In the case of alumina nanofluids, an average increase of 16% in convective heat transfer coefficient is observed with an average penalty of 28% in pressure drop. Moreover, flow resistance increases significantly compared to the base fluid even at very low concentrations of nanofluids. Finally, measured heat transfer coefficients are compared with predicted ones from the correlation of Shah under the same conditions.