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Unformatted text preview: m 92 . 12 m 6 . m 4 . 1 08 . 1 ln ) m 9 . 1 ( 2 08 . 1 ln 2 = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π = D w L S Then the steady rate of heat transfer to the tank becomes [ ] W 1.395 = ° − − ° = − = C ) 160 ( 20 ) C W/m. 0006 . )( m 92 . 12 ( ) ( 2 1 T T Sk Q & The mass of LNG is kg 07 . 48 6 m) 6 . ( ) kg/m 425 ( 6 3 3 3 = π = ρπ = ρ = D V m The amount heat transfer to the tank for a onemonth period is J 840 , 615 , 3 s) 3600 24 W)(30 395 . 1 ( = × × = Δ = t Q Q & Then the temperature of LNG at the end of the month becomes [ ] C138.4 ° = ° − − ° = − = 2 2 2 1 C ) 160 ( ) C J/kg. kg)(3475 (48.07 J 840 , 615 , 3 ) ( T T T T mC Q p 3178 ··· 3184 Design and Essay Problems KJ 3132...
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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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