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Unformatted text preview: T A Q h T T hA Q s s s s & & The radiation heat loss from the cylinder is W 7 . 4 ] ) K 273 20 ( ) K 273 120 )[( .K W/m 10 67 . 5 )( m 05027 . )( 1 . ( ) ( 4 4 4 2 8 2 4 4 = + − + × = − = − surr s s rad T T A Q σε & Therefore, the fraction of heat loss by radiation is % 8 . 11 1175 . W 40 W 7 . 4 fraction Radiation = = = = total radiation Q Q & & which is greater than 5%. Therefore, the radiation effect is still more than acceptable, and corrections must be made for the radiation effect. 924...
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This note was uploaded on 01/24/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.
 Fall '10
 Dr.DanielArenas
 Thermodynamics, Convection, Mass, Heat

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