Critical heat flux for CuO nanofluid fabricated by pulsed laser ablation differentiating deposition characteristics

被引：35
|
作者：
Lee, Seung Won [1 ]
Park, Seong Dae [1 ]
Bang, In Cheol [1 ]
机构：
[1] UNIST, Interdisciplinary Sch Green Energy, Ulsan Metropolitan City 689798, South Korea
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2012年 / 55卷 / 23-24期
基金：
新加坡国家研究基金会;
关键词：
CHF enhancement; Nanofluids; Contact angle; Capillarity; Rayleigh-Taylor instability wavelength; NANO-FLUIDS; POOL; WATER;
D O I：
10.1016/j.ijheatmasstransfer.2012.07.004
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, CHF characteristics in pool boiling according to CuO nanoparticles deposition characteristics are investigated compared with that of pure water. The deposition characteristics are controlled by using in-house prepared CuO nanofluids in two ways such as one-step method of pulsed laser ablation in liquid (PLAL) and two-step method of particles dispersion. Morphology of CuO nanoparticles in shape and size is analyzed by TEM while SEM images are obtained to observe the deposition structures on heated surfaces. Also, contact angle and capillary height for deposition layer on the surfaces after pool boiling experiments are measured to investigate the surface wettability. Rayleigh-Taylor instability wavelength on the surface with respect to a unified CHF enhancement mechanism is measured indirectly by a condensation method. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6908 / 6915
页数：8
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