CaCO_3在不锈钢光管内结垢特性及其对传热的影响  

The Characteristics of CaCO_3 Fouling and Their Effect on Heat Transfer of Stainless Steel Smooth Tube

作　　者：李素芳[1] 王良成[1,2] 王良璧[3,2] 鞠雪松 崔涛[3,2] 崔凯[1] 

机构地区：[1]兰州交通大学化学与生物工程学院,兰州730070 [2]兰州交通大学铁道车辆热工教育部重点实验室,兰州730070 [3]兰州交通大学机电工程学院,兰州730070

出　　处：《工程热物理学报》2016年第2期419-423,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51166007)

摘　　要：本文研究了雷诺数Re=600~2600时,CaCO_3析晶污垢在316L不锈钢光管内结垢特性及其对传热的影响,实验结果表明污垢热阻在粗糙度诱导期和污垢生长期的变化规律及粗糙度诱导期随流速先减小后增大。采用称量法获得CaCO_3在不锈钢光管内的结垢质量,得出Re=600~2100时,污垢平均生长速率随雷诺数增加而增大。In this paper it is studied that the characteristics of CaCO_3 crystallization fouling and their effects on heat transfer of 316 L stainless steel smooth tube in the range of Reynolds number600 to 2600.The results show that characteristics of fouling resistance are different in the induction period and fouling period.The induction period decreases with increasing the flow velocity firstly,and then increases with increasing the flow velocity.The quality of CaCO_3 fouling is obtained by weighing method,the mean growth rate of fouling increases with increasing Reynolds number from600 to 2100.

关 键 词：雷诺数 316L不锈钢光管 粗糙度诱导期 平均生长速率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]