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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016 open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15 |
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| Paper Title: | EFFECT OF HEXAGONAL PERFORATIONS ON CONVECTIVE HEAT TRANSFER COEFFICIENT IN FORCED CONVECTION - EXPERIMENTAL STUDY |
| Authors Name: | HARSHA H B , VEDAVYASA M |
| Unique Id: | IJSDR1609064 |
| Published In: | Volume 1 Issue 9, September-2016 |
| Abstract: | Heat dissipation is important requirement in many applications, for which fins are used. Perforated fins offer increased heat transfer with reduction in weight and cost. In this project, effect of hexagonal perforations in a square fin is investigated for different values of heat flux and Reynolds numbers. Aluminium 5052 sheets having dimension of 150mm x 150mm with a thickness of 1mm are used for experimentation. Eight fins were mounted in the slots (1mm thick, 2mm wide and150mm long) provided circumferentially on a hollow cylinder. The cylinder is heated by using cylindrical electrical heater. Entire cylinder with fins is placed in a duct of square cross section 350mm x 350mm and 1.5m long. Air is induced in the duct by using fan. Experiments were conducted for three different heat flux values of 35.5, 55.5 and 80 and six different Reynolds number under steady state conditions. Results are expressed interms of variation of convective heat transfer coefficient and Nusselt number with Reynolds number. From the results, it is observed that, convective heat transfer coefficient and Nusselt number increases with increase in the Reynolds number. It is also observed that both convective heat transfer and Nusselt number for perforated fins are higher compared to plane fin. Fin with 20% perforation showed higher values compared to 5% and 11% perforated fin while fin with 11% perforation showed lower compare to 20% and 5% perforated fin. |
| Keywords: | fins, perforated fins, convective heat transfer on perforated fins |
| Cite Article: | "EFFECT OF HEXAGONAL PERFORATIONS ON CONVECTIVE HEAT TRANSFER COEFFICIENT IN FORCED CONVECTION - EXPERIMENTAL STUDY", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.1, Issue 9, page no.405 - 409, September-2016, Available :http://www.ijsdr.org/papers/IJSDR1609064.pdf |
| Downloads: | 000346978 |
| Publication Details: | Published Paper ID: IJSDR1609064 Registration ID:160822 Published In: Volume 1 Issue 9, September-2016 DOI (Digital Object Identifier): Page No: 405 - 409 Publisher: IJSDR | www.ijsdr.org ISSN Number: 2455-2631 |
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