کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
660140 1458122 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nucleate boiling heat transfer enhancement for water and FC-72 on titanium oxide and silicon oxide surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Nucleate boiling heat transfer enhancement for water and FC-72 on titanium oxide and silicon oxide surfaces
چکیده انگلیسی

An experimental study was performed to investigate the nucleate boiling and critical heat flux (CHF) of water and FC-72 dielectric liquid on hydrophilic titanium oxide (TiO2) nanoparticle modified surface. A 1 cm2 copper heater with 1 μm thick TiO2 coating was utilized in saturated pool boiling tests with water and highly-wetting FC-72, and its performance was compared to that of a smooth surface. Results showed that TiO2 coated surface increased CHF by 50.4% and 38.2% for water and FC-72, respectively, and therefore indicated that boiling performance enhancement depends on the level of wettability improvement. A silicon oxide (SiO2) coated surface, exhibiting similar surface topology, was tested to isolate the roughness related enhancement from the overall enhancement. Data confirmed that hydrophilicity of TiO2 coated surface provides an additional mechanism for boiling enhancement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 9–10, April 2010, Pages 1773–1777
نویسندگان
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