Unformatted text preview: m 20 . m) 02 . ( 10 10 = = ≈ ≈ D L L t h which is much shorter than the total length of the duct. Therefore, we can assume fully developed turbulent flow in the entire duct, and determine the Nusselt number from 79 . 82 ) 91 . 3 ( ) 101 , 14 ( 023 . Pr Re 023 . 4 . 8 . 4 . 8 . = = = = k hD Nu h Heat transfer coefficient is C . W/m 2637 ) 79 . 82 ( m 02 . C W/m. 637 . 2 ° = ° = = Nu D k h h Then the inner surface temperature of the pipe at the exit becomes C 113.3 ° = ° − ° = − = e s s e e s s T T T T hA Q , 2 , C ) 80 )]( m 7 )( m 02 . ( )[ C . W/m 2637 ( W 627 , 38 ) ( & 812...
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 Fall '10
 Dr.DanielArenas
 Fluid Dynamics, Thermodynamics, Resistance, Convection, Force, Mass, Power, Heat, Heat Transfer, resistance heater, inner surface temperature

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