Mass transfer enhancement during CO2 absorption process in methanol/Al2O3 nanofluids

被引：88

作者：

Kim, Jae Hyung ^{[1
]}

Jung, Chung Woo ^{[2
]}

Kang, Yong Tae ^{[2
]}

机构：

[1] Kyung Hee Univ, Dept Mech Engn, Gyeonggi Do 446701, South Korea

[2] Korea Univ, Sch Mech Engn, Seoul 136701, South Korea

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2014年 / 76卷

基金：

新加坡国家研究基金会;

关键词：

Al2O3; nanoparticles; Bubble motion; CO2; absorption; Diffusion; Mass transfer; THERMAL-CONDUCTIVITY ENHANCEMENT; VISCOSITY; BEHAVIOR;

D O I：

10.1016/j.ijheatmasstransfer.2014.04.057

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The objectives of this paper are to analyze the mass transfer characteristics during CO2 bubble absorption and diffusion processes in nanofluid with Al2O3 nanoparticles. To analyze the effect of the nanoparticles on the mass transfer enhancement, the surface tension and viscosity of the nanofluids are measured. It is found that Al2O3 nanoparticles enhance CO2 absorption rate and increase the viscosity as high as 11% at 0.01 vol% but the surface tension keeps almost constant. The images of bubble absorption and diffusion are captured by a high-speed camera with the shadow-graph method. It is found that the mass transfer coefficient is enhanced up to 26% at 0.01 vol% compared with pure methanol. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：484 / 491

页数：8

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