HEAT TRANSFER ENHANCEMENT IN TUBE BY INSERTING TWISTED TAPE WITH ALTERNATE AXES |
Author(s): |
| Akhilesh Nandkumar Joshi , Government college of engineering, Amravati; S. M. Lawankar, Government college of engineering, Amravati |
Keywords: |
| Heat Transfer, Twisted Tape, Heat Exchanger, Swirl Flow, Nusselt Number, Reynolds Number, Friction Factor. |
Abstract |
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This project have been performed to study the influence of twisted tape with alternate axes and simple twisted tapes as turbulator and swirl flow generator. The experiments conducted using twisted tapes of the dimensions 900mm length, width 25.4 mm and thickness 2mm. The twists were made of twist ratio 2.5, 3.0 and 3.5. The Nusselt number obtained in the range of 25-97. The friction factor was found to lie in the range of 0.03-0.5. It is observed that the Nusselt number increases with increase in the Reynolds number and also increases with decrease in the twist ratio. The local convective heat transfer coefficient increases with increase in the mass flow rate and also increase by the use of simple twist and twist with alternate axes, Also as the twist ratio decreases the convective heat transfer coefficient increases. |
Other Details |
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Paper ID: IJSRDV2I4063 Published in: Volume : 2, Issue : 4 Publication Date: 01/07/2014 Page(s): 369-374 |
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