Thermodynamics HW Solutions 948

Thermodynamics HW Solutions 948 -...

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Chapter 12 Radiation Heat Transfer 12-58 "!PROBLEM 12-58" "GIVEN" T_1=650 "[K]" T_2=400 "[K]" epsilon_1=0.6 epsilon_2=0.9 "PercentReduction=85 [%], parameter to be varied" sigma=5.67E-8 "[W/m^2-K^4], Stefan-Boltzmann constant" "ANALYSIS" Q_dot_12_NoShield=(sigma*(T_1^4-T_2^4))/(1/epsilon_1+1/epsilon_2-1) Q_dot_12_1shield=(sigma*(T_1^4-T_2^4))/((1/epsilon_1+1/epsilon_2-
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Unformatted text preview: 1)+(1/epsilon_3+1/epsilon_3-1)) Q_dot_12_1shield=(1-PercentReduction/100)*Q_dot_12_NoShield Percent Reduction [%] 3 40 0.9153 45 0.8148 50 0.72 55 0.6304 60 0.5455 65 0.4649 70 0.3885 75 0.3158 80 0.2466 85 0.1806 90 0.1176 95 0.05751 40 50 60 70 80 90 100 0.2 0.4 0.6 0.8 1 PercentReduction [%] 3 12-45...
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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.

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