A STUDY OF NATURAL HEAT TRANSFER FROM HORIZONTAL AND INCLINED CYLINDERS
journal of kerbala university,
2008, Volume 4, Issue 3, Pages 60-69
AbstractHeat transfer by free convection occurs at any temperature differences. This mode of heat transfer was covered with thousands of researches to find the relations that related between the heat transfer coefficient and the parameters affected the heat transfer by natural convection. This paper including the simple study of heat transfer by free convection from cylinders heated at constant heat flux exposited to the ambient air at low Grashof number (>3x105). Heated cylinders with a constant heat flux were fixed horizontally and with inclination angles with the horizontal until 45o. Results showed the relation between Nussult number and (Gr.Pr). Empirical relations between these numbers were obtained to calculate the heat transfer coefficient depending on the range of (Gr.Pr). It was also shown that the heat transfer coefficient was decreased with angle of inclination.
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