Sulfuric acid deposition characteristics of H-type finned tube bank with 10 rows

被引：32

作者：

He, Ya-Ling ^{[1
]}

Han, Hui ^{[1
]}

Tang, Song-Zhen ^{[1
]}

Zhou, Tian ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2015年 / 81卷

关键词：

Heat exchanger; Deposition; Waste heat recovery; H-type finned tube; HEAT-EXCHANGERS; SURFACES; VAPOR;

D O I：

10.1016/j.ijheatmasstransfer.2014.10.013

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The deposition rate and condensate mass fraction of sulfuric acid on heat exchanger surfaces play a decisive role on the local low-temperature corrosion of heat exchangers. Based on the prediction model of acid deposition, a three-dimensional numerical simulation was performed for acid deposition characteristics of H-type finned tube bank with 10 rows. The effect of six geometric parameters (spanwise tube pitch, longitudinal tube pitch, fin height, fin pitch, fin thickness and slit width) and Reynolds number are examined. It can be observed that the fin thickness and Reynolds number have the most significant effect on acid deposition. A large fin thickness will greatly increase the risks of fin corrosion, and it is not recommended for practical use. According to the calculation results, a correlation of Sh number of sulfuric acid vs fin geometries for the 10-row tube bundle is presented. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：137 / 141

页数：5