Investigation on the flow and convective heat transfer characteristics of nanofluids in the plate heat exchanger

被引：72

作者：

Sun, Bin ^{[1
]}

Peng, Cheng ^{[1
]}

Zuo, Ruiliang ^{[1
]}

Yang, Di ^{[1
]}

Li, Hongwei ^{[1
]}

机构：

[1] Northeast Dianli Univ, Sch Energy & Power Engn, Jilin 132000, Peoples R China

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2016年 / 76卷

关键词：

Nanofluids; Turbulent flow; Convective heat transfer coefficient; Resistance coefficient; TRANSFER ENHANCEMENT; CNT NANOFLUIDS; WATER;

D O I：

10.1016/j.expthermflusci.2016.03.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The researchers used nanoparticles (Cu, Fe2O3 and Al2O3) with an average particle size of 50 nm to prepare nanofluids with mass fractions at 0.1%, 0.3%, and 0.5%. Dispersants such as sodium dodecyl benzene sulfonate (SDBS) were added at various concentrations to improve the stability of the nanofluids. The flow and convective heat transfer characteristics of the nanofluids inside a plate heat exchanger were analyzed. The dispersants significantly improved the stability of the nanofluids. The results demonstrate that, at the same Reynolds number, the overall heat transfer coefficient and resistance coefficient are enhanced, compared to deionized water, with the addition of nanoparticles. Further, the overall heat transfer coefficient was improved significantly with the increase of the mass fraction of nanoparticles. However, the resistance coefficient did not significantly increase. Different nanoparticles (Cu, Fe2O3 and Al2O3) lead to different consequences. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：75 / 86

页数：12

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