A hot fluid at 35C is to be transported through a
Chapter 9, Problem 9.75(choose chapter or problem)
A hot fluid at 35?C is to be transported through a tubehorizontally positioned in quiescent air at 25?C. Whichof the tube shapes, each of equal cross-sectional area,would you use in order to minimize heat losses to theambient air by free convection?Use the following correlation of Lienhard [Int. J. HeatMass Transfer,16, 2121, 1973] to approximate thelaminar convection coefficient for an immersed bodyon which the boundary layer does not separate fromthe surface,The characteristic length lis the length of travel of thefluid in the boundary layer across the shape surface.Compare this correlation to that given for a sphere totest its utility.
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