Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids

被引：276

作者：

Kim, S. J. ^{[1
]}

Bang, I. C. ^{[1
]}

Buongiorno, J. ^{[1
]}

Hu, L. W. ^{[1
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

NUCLEATION SITE DENSITY; NANO-FLUIDS; POOL; WATER; DYNAMICS; CRISIS; MODEL; FLUX;

D O I：

10.1063/1.2360892

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Buildup of a porous layer of nanoparticles on the heated surface occurs upon boiling of nanofluids containing alumina, zirconia, or silica nanoparticles. This layer significantly improves the surface wettability, as shown by a reduction of the static contact angle on the nanofluid-boiled surfaces compared with the pure-water-boiled surfaces. The contact angle reduction is attributed to changes in surface energy and surface morphology brought about by the presence of the nanoparticle layer. The high surface wettability can plausibly explain the boiling critical heat flux enhancement in nanofluids. (c) 2006 American Institute of Physics.

引用

页数：3

共 19 条

[1]

[Anonymous], POOL EXT FLOW BOIL A

[2]

[Anonymous], 2006, Nucl. Eng. Technol

[3] Boiling heat transfer performance and phenomena of Al2O3-water nano-fluids from a plain surface in a pool [J].