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Unformatted text preview: Using the proper relation for Nusselt number, heat transfer coefficient is determined to be [ ] C . W/m 93 . 40 ) 2046 ( m 2 . 1 C W/m. 02401 . 2046 ) 7350 . ( 871 ) 10 447 . 1 ( 037 . Pr ) 871 Re 037 . ( 2 3 / 1 8 . 6 3 / 1 8 . = = = = = = = Nu L k h k hL Nu L The thermal resistances are 2 m 5.4 = m) m)(1.5 2 . 1 ( 3 = s A C/W 0045 . ) m C)(5.4 . W/m 93 . 40 ( 1 1 C/W 0012 . ) m C)(5.4 W/m. (0.78 m 005 . C/W 0231 . ) m C)(5.4 . W/m 8 ( 1 1 2 2 , 2 2 2 , = = = = = = = = = s o o conv s cond s i i conv A h R kA L R A h R Then the total thermal resistance and the heat transfer rate through the 3 windows become W 833.3 = = = = + + = + + = C/W 0288 . C )] 2 ( 22 [ C/W 0288 . 0045 . 0012 . 0231 . 2 1 , , total o conv cond i conv total R T T Q R R R R & 778...
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 Fall '10
 Dr.DanielArenas
 Thermodynamics, Convection, Force, Mass, Heat

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