Turbulent heat transfer enhancement by counter/co-swirling flow in a tube fitted with twin twisted tapes

In the present study, the influences of twin-counter/co-twisted tapes ( counter/ co-swirl tape) on heat transfer rate ( Nu), friction factor ( f) and thermal enhancement index ( η) are experimentally determined. The twin counter twisted tapes ( CTs) are used as counter-swirl flow generators while tw...

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Veröffentlicht in:	Experimental thermal and fluid science 2010-01, Vol.34 (1), p.53-62
Hauptverfasser:	Eiamsa-ard, S., Thianpong, C., Eiamsa-ard, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences COMPARATIVE EVALUATIONS CORRELATIONS Devices using thermal energy Energy Energy. Thermal use of fuels ENGINEERING Enhancement index Exact sciences and technology FRICTION FACTOR Heat exchangers (included heat transformers, condensers, cooling towers) HEAT TRANSFER NUSSELT NUMBER REYNOLDS NUMBER TUBES Twin co-twisted tapes Twin counter twisted tapes VORTEX FLOW
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