[1]吴金星,彭旭,李俊超.螺旋格栅纽带开发及其综合换热性能分析[J].郑州大学学报(工学版),2014,35(06):10-13.[doi:10.3969/j.issn.1671-6833.2014.06.003]
　WU Jinxing,PENG Xu,LI Junchao.Analysis on Comprehensive Heat Transfer Characteristics andDevelopment of the Spiral Grid Twisted Tape[J].Journal of Zhengzhou University (Engineering Science),2014,35(06):10-13.[doi:10.3969/j.issn.1671-6833.2014.06.003]
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螺旋格栅纽带开发及其综合换热性能分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
35
期数:
2014年06期
页码:
10-13
栏目:
出版日期:
2014-11-25

文章信息/Info

Title:
Analysis on Comprehensive Heat Transfer Characteristics andDevelopment of the Spiral Grid Twisted Tape
作者:
吴金星; 彭旭; 李俊超
Author(s):
WU Jinxing; PENG Xu; LI Junchao
1.School of Chemical Engineering and Energy, 2hengzhou University, Zhengzhou 450001, China; 2. Henan Leway Thermal E.quipment Manufacturing Co. Ltd.,Zhengzhou 450101,China
Keywords:
gas-fired vaeuum boiler;  tube insert;  spiral grid twisted tape;  heat transfer enhaneement;  numerical simulation
分类号:
TQ051.5 TK124
DOI:
10.3969/j.issn.1671-6833.2014.06.003
文献标志码:
A
Abstract:
In order to enhanee conveclive heat transler of the heat transfer tubes with bigger diameter, a newkind of tube insert, spiral grid twisted tape, was developed for the gas-fired vacuum boiler. 3D geometricmodels of the spiral grid twisted tape and the classie twisted tape with the same twist ratio inserted the tubeswere sel up repeelively. The comprehensive heat transfer charaeteristies in the tube was simulated using theFlUEN’T sofware under the same conditions. The mechanisms of heat transfer enhancement, such as deereasement of hydraulie diameler of flow section, inereasement of spiral flow speed, the secondary llow causedeentrifugal foree ete. are analyzed. The results show that the conveetive heat transfer coefficient of the spiragrid twisted tape deereases 8.6% than that of the classic twisted tapes and pressure drop decreases 32.0%.and comprehensive evaluation factor J is greater than 1. lt shows that the spiral grid twisted tape has a goodcomprehensive heat transter perermance.
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