کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7055091 | 1458040 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Systematic measurements of heat transfer characteristics in saturated pool boiling of water-based nanofluids
ترجمه فارسی عنوان
اندازه گیری های سیستماتیک از ویژگی های انتقال گرما در گرمایش اشباع استوانه نانوسیم های مبتنی بر آب
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کلمات کلیدی
نانو سیال، جوش پایدار اشباع شده، مواد ذرات، غلظت ذرات، شرایط پراکندگی ذرات، ضریب انتقال حرارت، شار گرمای انتقالی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Experiments were carried out to investigate the heat transfer characteristics in saturated pool boiling of water-based nanofluids. An upward-facing copper surface of 20Â mm in diameter was used as the heated surface. Main experimental parameters in this work were nanoparticles' material (TiO2, Al2O3 and SiO2), mass concentration (0.04, 0.4 and 1Â kg/m3) and dispersion condition (fine and coarse dispersions). Effects of these parameters on the time-variation of wall superheat under constant heat flux, the heat transfer coefficient (boiling curve) and the critical heat flux (CHF) were explored. It was found that the particle dispersion condition has no noticeable influence on the heat transfer characteristics within the range tested in this work. Whilst, the material and concentration of nanoparticles greatly affected the time-variation of wall superheat and the boiling curve. In particular, it was found that the wall superheat likely to increase significantly when the nanoparticle layer formed on the heated surface is partially detached. The CHF in nanofluid was 2.5-3 times higher than that for pure water in all the experimental conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 102, November 2016, Pages 264-276
Journal: International Journal of Heat and Mass Transfer - Volume 102, November 2016, Pages 264-276
نویسندگان
Muhamad Zuhairi Sulaiman, Daisuke Matsuo, Koji Enoki, Tomio Okawa,