制冷学报2016，Vol.37Issue(6)：1-6,6.DOI:10.3969/j.issn.0253-4339.2016.06.001
开缝翅片管换热器表面积尘与压降特性的实验研究
Experimental Investigation on Particle Deposition and Pressure Drop Characteristics of Slit Fin-and-tube Heat Exchanger
摘要
Abstract
The air⁃side pressure drop of fin⁃and⁃tube heat exchangers will increase when covered with dust particles. In this paper, a vis⁃ual experimental rig was set up to investigate the particle deposition and pressure drop characteristics. The slit fin⁃and⁃tube heat exchang⁃ers were selected as the test samples. The air velocity ranged from 1. 0 to 2. 3 m/s and the particle concentration ranged from 2. 1 to 10. 8 g/m3 . The results indicate that dust particles mostly deposited on the windward side of slit fins and the front part of tubes. High air veloci⁃ty is beneficial to the particle deposition and can increase the air⁃side pressure drop;the maximum particle deposition weight and the maxi⁃mum increase of air⁃side pressure drop increased up to 98. 4% and 93. 8% respectively in the experimental conditions. High particle con⁃centration can promote the particle deposition and increase the air⁃side pressure drop; the maximum particle deposition weight and the maximum increase of air⁃side pressure drop increased up to 22. 8% and 28. 6% respectively in the experimental conditions. The air⁃side pressure drop tended to stability more quickly than particle deposition weight in the particle deposition process.关键词
翅片管换热器/粉尘沉积/压降/开缝翅片/实验研究Key words
fin-and-tube heat exchanger/particle deposition/pressure drop/slit fin/experimental investigation分类
通用工业技术引用本文复制引用
唐家俊,詹飞龙,胡海涛,丁国良,庄大伟..开缝翅片管换热器表面积尘与压降特性的实验研究[J].制冷学报,2016,37(6):1-6,6.基金项目
国家自然科学基金创新研究群体（51521004）资助项目。（ The project was supported by Innovative Research Groups of the National Natural Science Foundation of China （No.51521004）.） （）
