Thermal Performance Evaluation of Heat Exchanger Tubes Equipped with Coupling Twisted Tapes

被引：24

作者：

Eiamsa-ard, S. ^{[1
]}

Nanan, K. ^{[1
]}

Thianpong, C. ^{[2
]}

Eiamsa-ard, P. ^{[2
]}

机构：

[1] Mahanakorn Univ Technol, Fac Engn, Dept Mech Engn, Bangkok 10530, Thailand

[2] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Dept Mech Engn, Bangkok, Thailand

来源：

EXPERIMENTAL HEAT TRANSFER | 2013年 / 26卷 / 05期

关键词：

heat transfer enhancement; heat exchanger; swirl flow; turbulence; coupling twisted tapes; FRICTION FACTOR CHARACTERISTICS; CIRCULAR TUBE; PRESSURE-DROP; FLOW; ENHANCEMENT; LAMINAR;

D O I：

10.1080/08916152.2012.704483

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present work has been conducted to investigate the effect of coupling twisted tapes on heat transfer enhancement in a heat exchanger. The effects of (1) twisted tape orientation (co-coupling twisted tapes or counter-coupling twisted tapes), (2) width ratio, and (3) twist ratio were also examined. Results of coupling twisted tapes were also compared to those of a typical twisted tape. Experimental results showed that the use of counter-coupling twisted tapes resulted in higher heat transfer, friction loss, and thermal performance factor than that of co-coupling twisted tapes and typical twisted tapes. Thermal performance factor increased as twist ratio and Reynolds number decreased while width ratio increased.

引用

页码：413 / 430

页数：18

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