摘要
为了明确积灰对翅片管换热器的长效性能的影响规律，需要了解不同管排数对翅片管换热器表面积灰量与空气侧压降的影响。本文通过换热器积灰可视化实验，研究了管排数对换热器表面粉尘沉积量与空气侧压降的影响特性。实验中测试样件为开缝翅片管换热器，管排数范围为1 排~3 排。实验结果表明，管排数为3 排的换热器样件表面积灰量比管排数为2 排和1 排的换热器样件分别增加了54.4%和101.1%；换热器表面沉积粉尘后，会增大空气侧压降，对于管排数为1 排、2 排和3 排的换热器样件，积灰导致空气侧压降分别增加了248.7%、189.3%和167.6%。
The effect of tube row number on particle deposition weight and air-side pressure drop of finned tube heatexchangers should be investigated to know the influence of particle deposition on the long-term performance of finnedtube heat exchangers. In this study, the influence mechanism of tube row number on particle deposition weight andair-side pressure drop was analyzed by visualization experiments. In the experiments, the tested samples are split finnedtube heat exchangers, and the number of tube rows ranged from 1 to 3. The results show that, the maximum dustdeposition weight on finned tube heat exchangers with triple row tube increased by 54.4% and 101.1% respectivelycompared with those on the heat exchangers with double row tube and single row tube. Particle deposited on the heatexchangers can increase the air-side pressure drop, and the air-side pressure drop on heat exchangers with triple rowtube, double row tube and single row tube increased by 247.8%, 189.3% and 167.6%, respectively.
作者
唐家俊
詹飞龙
胡海涛
丁国良
庄大伟
申隽
TANG Jia-jun;ZHAN Fei-long;HU Hai-tao;DING Guo-liang;ZHUANG Da-wei;SHEN Jun(Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai, 200240, China;International Copper Association, Shanghai 200020, China)
出处
《制冷技术》
2016年第3期11-14,共4页
Chinese Journal of Refrigeration Technology
基金
国家自然科学基金创新研究群体项目(No.51521004)
上海市优秀学术带头人计划项目(No.16XD1401500)
关键词
翅片管换热器
积灰量
压降
管排数
实验研究
Finned tube heat exchanger
Particle deposition weight
Pressure drop
Tube row number
Experimental investigation
