کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7056690 1458057 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and theoretical description of a technique for the concentration measurement of binary liquids containing nanoparticles
ترجمه فارسی عنوان
شرح تجربی و نظری یک روش برای اندازه گیری غلظت مایعات دودویی حاوی نانوذرات
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Nanoparticles are known to enhance both the heat and mass transport properties of fluids in which they are suspended resulting in significant interest for many fields, including refrigeration systems whose efficiency is linked to effective heat and mass transport. Within absorption refrigeration the concentration of the binary liquid is a key component in evaluating the performance during operation. Conventional techniques for concentration measurement rely on properties such as the density or electrical conductivity which are changed when nanoparticles are present. In addition to changing the thermophysical properties by adding nanoparticles, the volume fraction of the nanoparticles changes during a mass transfer process which further complicates the concentration measurement. The method presented here is a density based measurement that incorporates the changing volume fraction of the nanoparticles and concentration of the base fluid. Experiments include LiBr and LiCl solutions containing silver and iron-oxide nanoparticles at multiple initial volume fractions and particle sizes. The method developed is extremely robust and useful, as it is possible to determine the concentration of any unknown sample based only on knowledge of the initial concentration of base liquid and nanoparticle volume fraction when the sample is synthesized.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 85, June 2015, Pages 561-567
نویسندگان
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