化工学报2012，Vol.63Issue(3)：728-732,5.DOI:10.3969/j.issn.0438-1157.2012.03.008
内置转子套管式换热器强化传热实验
Heat transfer enhancement of double-pipe heat exchanger inserted with rotors
摘要
Abstract
Enhanced heat transfer technology is an energy-saving technology. For new types of tube inserts, the mechanism of the rotors-assembled device for heat transfer enhancement and automatic cleaning is introduced in this paper. Experiments were carried out in order to study the heat transfer and friction characteristics of the tube inserted with helical blade rotors and discrete blade rotors. An experiment with a smooth tube was used to calibrate the experimental system and data reduction method. The experimental results show that the Nusselt number from the tube inserted with rotors is higher than that of plain tube within the experimental range of Reynolds number, though the friction factor of the tube with rotors inserted is slightly higher. The comparison of the tubes inserted with helical blade rotors and discrete blade rotors shows that the former present higher Nusselt number, lower friction factor and higher PEC value, indicating that the comprehensive performance of helical blade rotor is better.关键词
转子组合式/强化传热/螺旋叶片/叶片间断型/综合性能Key words
rotors-assembled/heat transfer enhancement/helical blade/discrete blade/comprehensive performance分类
能源科技引用本文复制引用
张震,丁玉梅,阎华,杨卫民..内置转子套管式换热器强化传热实验[J].化工学报,2012,63(3):728-732,5.基金项目
北京市自然科学基金项目(3102023) （3102023）
国家科技支撑计划重大项目(2011BAA04B02). （2011BAA04B02）
