Unformatted text preview: Bi < 0.1, s 144 = ⎯→ ⎯ = − − ⎯→ ⎯ = − − = ° ° = = = − − ∞ ∞ t e e T T T t T L C h V C hA b t bt i c p p s ) s 0193 . ( 13 21 30 350 30 50 ) ( s 0193 . m) C)(0.00075 J/kg. 896 )( kg/m (2702 C . W/m 35 ρρ ( b ) The wire travels a distance of m 24 = = → = s) m/s)(144 60 / 10 ( length time length velocity This distance can be reduced by cooling the wire in a water or oil bath. ( c ) The mass flow rate of the extruded wire through the air is kg/min 191 . m/min) 10 ( m) 0015 . ( ) kg/m 2702 ( ) 4 / ( 2 3 2 = = = = πρρ V r V m & & Then the rate of heat transfer from the wire to the air becomes W 856 = kJ/min 51.3 = C ) 50 350 )( C kJ/kg. 896 . )( kg/min 191 . ( ] ) ( [ ° − ° = − = ∞ T t T C m Q p & & 4102...
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This note was uploaded on 01/19/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.
 Fall '10
 Dr.DanielArenas
 Thermodynamics, Mass, Heat

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