International Journal of Application or Innovation in Engineering & Management
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ISSN 2319 – 4847
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Call for Paper, Published Articles, Indexing Infromation Comparision of Heat Transfer Coefficients in Free and Forced Convection Using Circular annular Finned Tubes, Authors : Dr. Abdul Jabbar N. Khalif, Israa Riyadh Aziz Al mousawi, International Journal of Application or Innovation in Engineering & Management (IJAIEM), www.ijaiem.org
Volume & Issue no: Volume 5, Issue 4, April 2016

Title:
Comparision of Heat Transfer Coefficients in Free and Forced Convection Using Circular annular Finned Tubes
Author Name:
Dr. Abdul Jabbar N. Khalif, Israa Riyadh Aziz Al mousawi
Abstract:
ABSTRACT In this study, heat transfer coefficients in both free and forced convection heat transferusing vertical circular annular finned tubes were investigatedexperimentally. For this purpose three types of metals were used, namely,Aluminum, Copper, and Iron. These metals differ from each other intheir specific weight,cost and thermal conductivities which are 204 W/m.K for Aluminum, 386 W/m.K for Copper and 73 W/m.K for iron.Surface temperature employed during experiments varied between 40and 60 Co at 10 Co intervals. The spacing between fins is 1cm. It was found that the heat transfer coefficient increases with increasing air speed from (1to 3) m/s, and there is anoticeable increase in heat transfer coefficientwhen using Copper metal to manufacture the tube and the fins as compared to Aluminum and Ironmetals.
Cite this article:
Dr. Abdul Jabbar N. Khalif, Israa Riyadh Aziz Al mousawi , " Comparision of Heat Transfer Coefficients in Free and Forced Convection Using Circular annular Finned Tubes " , International Journal of Application or Innovation in Engineering & Management (IJAIEM), Volume 5, Issue 4, April 2016 , pp. 194-204 , ISSN 2319 - 4847.
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