制冷技术2026，Vol.46Issue(1)：45-50,6.DOI:10.3969/j.issn.2095-4468.2026.01.201
冷水机组末端风盘用铜管和不锈钢管的管内侧加速结垢对比
Comparison on Accelerated Fouling Test in Inner Sides of Copper Tubes and Stainless-Steel Tubes of Fan Coils in Chillers
摘要
Abstract
In order to evaluate the anti-fouling potential in fan coils of chillers by replacing the copper tubes with stainless-steel tubes,an experimental rig of accelerated fouling test in the inner sides of tubes is designed and established,and the fouling differences among a cooper smooth tube,a stainless-steel smooth tube and a stainless-steel tube with inner riblets are comparatively investigated.Testing conditions cover the inlet water velocity of 1.2 m/s,the suspension mass concentration of 800 mg/L,and the inlet water temperature of 10 ℃ and 60 ℃.The results show that,the fouling mass in the cooper smooth tube is the largest,which is respectively 39.1%and 48.2%higher than that in the stainless-steel smooth tube and the stainless-steel tube with inner riblets under the cooling condition of chiller,and is respectively 51.4%and 88.9%higher than that in the stainless-steel smooth tube and the stainless-steel tube with inner riblets under the heating condition of chiller.The surface free energy of copper smooth tube is greater than those of stainless-steel tubes,which means that the fouling particulates are more prone to deposit on the copper smooth tube.The crystal forms of fouling layer in the copper smooth tube,the stainless steel smooth tube and the stainless steel tube with inner riblets respectively present as the dense lamellar shape,the large crystal cluster shape and the small crystal cluster shape,which means that the fouling layer on the surface of copper smooth tube is more difficult to remove than that of stainless steel tubes,and the existence of internal riblets can destroy the stability of fouling layer on the surface of stainless steel tubes.关键词
末端风盘/铜管/不锈钢管/加速结垢/实验研究Key words
Fan coil/Copper tube/Stainless steel tube/Accelerated fouling test/Experimental research分类
通用工业技术引用本文复制引用
张超超,詹飞龙,周文艺,宋霞,丁国良,岳宝,李丰,黎辉玲..冷水机组末端风盘用铜管和不锈钢管的管内侧加速结垢对比[J].制冷技术,2026,46(1):45-50,6.基金项目
国家自然科学基金(No.52306273,No.52341601),国家重点研发计划(No.2023YFC3806402). （No.52306273,No.52341601）
