Boiling Thermal Performance of TiO2 Aqueous NanoFluids as a Coolant on a Disc Copper Block

被引：73

作者：

Salari, Elham ^{[1
]}

Peyghambarzadeh, Seyed Mohsen ^{[1
]}

Sarafraz, Mohammad Mohsen ^{[2
]}

Hormozi, Faramarz ^{[2
]}

机构：

[1] Islamic Azad Univ, Mahshahr Branch, Dept Chem Engn, Coll Chem Engn, Mahshahr, Iran

[2] Semnan Univ, Fac Chem Petr & Gas Engn, Semnan, Iran

来源：

PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING | 2016年 / 60卷 / 02期

关键词：

Pool Boiling; TiO2; Bubble formation; fouling; heat flux; nanofluid; HEAT-TRANSFER; WATER NANOFLUID; POOL; SURFACE;

D O I：

10.3311/PPch.8262

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This work focuses on potential application of nano-fluids in cooling of high heat flux surfaces. For this purpose, experimental studies have been performed to quantify the heat transfer coefficient of Titana (TiO2) aqueous nano-fluids under different operating conditions. Boiling mechanism is established on a disc copper made heater at different heat flux, mass concentration of nano-fluids and sub-cooling temperatures. Results demonstrated that heat transfer coefficient of Titana nano-fluids are relatively higher than that of the base fluid. Heat and mass concentration of nano-particles can intensify the pool boiling heat transfer coefficient, while sub-cooling temperature can only have impacts on bubble formation. Also, visual study demonstrates that fouling formation of nano-particles can intensify the bubble transport due to the intensification of nucleation sites in the boiling surface.

引用

页码：106 / 112

页数：7

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