Effects of fin structure on heat transfer and resistance characteristics of super slit finned tube heat exchangers

被引：0
|
作者：
Tu Q. [1 ]
Yuan Y. [1 ]
Hu X. [1 ]
机构：
[1] Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai
来源：
Huagong Xuebao/CIESC Journal | 2016年 / 67卷 / 11期
关键词：
Comprehensive flow and heat transfer performance; Heat transfer; Modeling experiment; Numerical simulation; Optimization; Super slit finned tube heat exchangers;
D O I：
10.11949/j.issn.0438-1157.20160756
中图分类号：
学科分类号：
摘要：
To understand the effect of fin structure on heat transfer and resistance, numerical simulation and validation experiments were performed on super slit finned tube heat exchangers with different fin pitches Pf and slit heights Sh. When Re was less than 7200, heat transfer and resistance performance was improved with Pf increase. When Re was greater than 7200, heat transfer was improved but resistance was declined with Pf decrease. In case of Sh increase, heat transfer declined first and enhanced later, whereas resistance showed an opposite trend. With regard to five super slit finned tube heat exchangers with different fin structures, the comprehensive flow and heat transfer performance were improved while the actual heat transfer area was decreased with Pf increase, which a consideration of all factors should be required. A good agreement was observed between the numerical simulation and experimental results when Re was in the range of 2734-6712, indicating that the numerical simulation method could predict the heat transfer and resistance characteristics of super slit finned tube heat exchangers. These results would set a basis for optimization between structure and performance of these heat exchangers. © All Right Reserved.
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页码：4615 / 4622
页数：7
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