SPRAY COOLING BY Al2O3 AND TiO2 NANOPARTICLES IN WATER

被引：0
|
作者：
Bellerova, Hana [1 ]
Pohanka, Michal [1 ]
Raudensky, Miroslav [1 ]
Tseng, Ampere A. [2 ]
机构：
[1] Brno Univ Technol, Heat Transfer & Fluid Flow Lab, Tech 2, Brno 61669, Czech Republic
[2] Arizona State Univ, Sch Mech Aerosp Chem & Mat Engn, Tempe, AZ 85287 USA
来源：
2010 12TH IEEE INTERSOCIETY CONFERENCE ON THERMAL AND THERMOMECHANICAL PHENOMENA IN ELECTRONIC SYSTEMS | 2010年
关键词：
nanofluids; nanoparticles; heat transfer; spray cooling; experimental;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An experimental investigation of spray cooling performed with water based nanofluids containing Al2O3 or TiO2 was conducted. The concentration of nanoparticles in the liquid was used in the experimental program was from 1 to 40 wt.%. A steel sensor with a soldered thermocouple was cooled from 200 degrees C. The liquid was sprayed on the surface with a full cone nozzle from distances of 40, 100 and 160 mm. The heat transfer coefficient was calculated at an interval of surface temperature from 100 degrees C to 50 degrees C by inverse modelling, and compared with the heat transfer coefficient of water cooling. The results surprisingly show a decrease of heat transfer coefficient on the cooled surface with a concentration of the nanoparticles.
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页数：5
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