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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
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.
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页码:413 / 430
页数:18
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