Experimental study of heat and mass transfer of saltwater cooling tower

被引：0

作者：

Wang, Chao ^{[1
]}

Dong, Fei-Ying ^{[1
]}

Fan, Li-Wu ^{[1
]}

Yu, Zi-Tao ^{[1
]}

Hu, Ya-Cai ^{[1
]}

机构：

[1] Institute of Thermal Science and Power Systems, Zhejiang University

来源：

Hu, Y.-C. (huyacai@zju.edu.cn) | 1600年 / Zhejiang University卷 / 48期

关键词：

Characteristics of heat and mass transfer; Cooling tower; Saltwater;

D O I：

10.3785/j.issn.1008-973X.2014.04.016

中图分类号：

学科分类号：

摘要：

Experiments were performed on a mechanical-draft counter-flow cooling tower to analyze the heat and mass transfer of saltwater cooling towers at high concentrations. By maintaining the inlet saltwater temperature at 28~50°C, the effects of mass fraction of the saltwater (6%, 12%, 16%, 25%, and 34% aqueous CaCl2 solutions) and Reynolds number Re (ranging between 2000~16000) on the non-dimensional heat and mass transfer coefficients, NuV and ShV were respectively analyzed. Results show that self-scaling phenomenon is occurred in packing layer of saltwater cooling tower, and the NuVPr-1/3 and ShVSc-1/3 are nearly independent of Re. The heat and mass transfer performance of the cooling towers deteriorates with increasing the concentration of the saltwater. When the mass fraction is increased from 6% to 34%, NuVPr-1/3 and ShVSc-1/3 are decreased by 51.5% and 45.8%, respectively. Correlations of NuVPr-1/3 and ShVSc-1/3 to the variation of concentration were proposed based on linear curve fitting.

引用

页码：666 / 670+710

共 21 条

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