Thermodynamics HW Solutions 641

Thermodynamics HW Solutions 641 - Chapter 8 Internal Forced...

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Chapter 8 Internal Forced Convection kg/s 0.256 = m/s) (7 4 m) (0.2 ) kg/m 164 . 1 ( 4 2 3 2 π = π ρ = ρ = m m c D A m V V Air 50 ° C 7 m/s 12 m 5 ° C 2 m 7.54 = m) m)(12 2 . 0 ( ππ = = DL A s The exit temperature of air is determined from C 8.74 ° = = = ) 1007 )( 256 . 0 ( ) 54 . 7 )( 09 . 9 ( ) /( ) 50 5 ( 5 ) ( e e T T T T p s C m hA i s s e The logarithmic mean temperature difference and the rate of heat transfe r are kW 10.6 W 10,633
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This note was uploaded on 01/22/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.

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