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NUMERICAL STUDY OF FIN-TUBE TYPE HEAT EXCHANGER WITH DELTA WINGLETS

Divyprakash C. Pal, Abhik Majumder
Frontiers in Heat and Mass Transfer (FHMT) 7 - 1 (2016)


Abstract


In this present work heat transfer characteristics, thermal performance and pressure drop are studied numerically for a finned-tube bank heat exchanger with Delta Winglet Vortex Generator (DWVG) on the fin at different angle of attack (α). The thermo-fluidic properties are studied by varying α at 15o, 25o, 30o and 35o. The base length (lDW) of the winglet also varied from 20mm to 35mm. The heat transfer coefficient and pressure drop increased in all the cases with increase in Reynolds number. However, significant increase in heat transfer of about 23.92% was observed for α35o when compared with plain fin heat-exchanger.


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DOI: http://dx.doi.org/10.5098/hmt.7.1

ISSN: 2151-8629