problem4-09 - PROBLEM 4.9 KNOWN Heat generation in a buried...

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PROBLEM 4.9 K NOWN: Heat generation in a buried spherical container. FIND: (a) Outer surface temperature of the container, (b) Representative isotherms and heat low lines. f SCHEMATIC: ASSUMPTIONS: (1) Steady-state conditions, (2) Soil is a homogeneous medium with onstant properties. c P ROPERTIES: Table A-3 , Soil (300K): k = 0.52 W/m K. ANALYSIS: (a) From an energy balance on the container, and from the first entry in
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