Thermodynamics HW Solutions 231

Thermodynamics HW Solutions 231 - T [F] 5 124.9 16.58 122.6...

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Chapter 15 Steady Heat Conduction 3-113 "GIVEN" k_spoon=8.7 "[Btu/h-ft-F], parameter to be varied" T_w=200 "[F]" T_infinity=75 "[F]" A_c=0.08/12*0.5/12 "[ft^2]" "L=7 [in], parameter to be varied" h=3 "[Btu/h-ft^2-F]" "ANALYSIS" p=2*(0.08/12+0.5/12) a=sqrt((h*p)/(k_spoon*A_c)) (T_tip-T_infinity)/(T_w-T_infinity)=cosh(a*(L-x)*Convert(in, ft))/cosh(a*L*Convert(in, ft)) x=L "for tip temperature" DELTAT=T_w-T_tip k spoon [Btu/h.ft.F]
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Unformatted text preview: T [F] 5 124.9 16.58 122.6 28.16 117.8 39.74 112.5 51.32 107.1 62.89 102 74.47 97.21 86.05 92.78 97.63 88.69 109.2 84.91 120.8 81.42 132.4 78.19 143.9 75.19 155.5 72.41 167.1 69.82 178.7 67.4 190.3 65.14 201.8 63.02 213.4 61.04 225 59.17 k spoon [Btu/h.ft.F] T [F] 5 122.4 5.5 123.4 6 124 6.5 124.3 7 124.6 7.5 124.7 8 124.8 8.5 124.9 9 124.9 9.5 125 10 125 10.5 125 11 125 11.5 125 12 125 3-74...
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