摘要
在综述管壳式换热器和板式换热器国内外污垢研究的基础上，介绍了轧槽管防垢性能实验和污垢模型，轧槽管的污垢热阻为光管的0．52—0．88倍，污垢条件下的传热Nu数为光管的1．8倍。轧槽管污垢热阻为流速的函数，当流速由0．25m／s增至0．75m／s时，污垢热阻减小至原来的66.7％。
Basing on the review of the investigations of fouling in shell-and-tube heat exchanger and plate heat exchanger, the experimental investigation of fouling prevention in corrugated tubes and the fouling models was introduced. Experimental investigation shows that the heat resistance of fouling in corrugated tube is 0.52 - 0.88 times that of smooth tube. The Nusellt number is 1.8 times that of smooth tube. The heat resistance of fouling in corrugated tube is majorant of fluid velocity. When the other parameter values are same, the fluid velocity increases from 0.25 m/s to 0.75 m/s, the heat resistance of fouling will reduce to 66.7%.
出处
《流体机械》
CSCD
北大核心
2007年第4期9-11,共3页
Fluid Machinery
基金
教育部新世纪优秀人才支持计划(NCET040826)
清洁高效冷却装备的研制及产业化
广东省重大科技攻关项目(2005A30303001)
关键词
轧槽管
污垢
污垢热阻
换热器
corrugated tube
fouling
heat resistance of fouling
heat exchanger
