Thermodynamics HW Solutions 176

Thermodynamics HW Solutions 176 - R_conv_o=1(h_o*A k...

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Chapter 3 Steady Heat Conduction 3-36 "GIVEN" k_ins=0.035 "[W/m-C], parameter to be varied" L_metal=0.001 "[m]" k_metal=15.1 "[W/m-C], parameter to be varied" T_refrig=3 "[C]" T_kitchen=25 "[C]" h_i=4 "[W/m^2-C]" h_o=9 "[W/m^2-C]" T_s_out=20 "[C]" "ANALYSIS" A=1 "[m^2], a unit surface area is considered" Q_dot=h_o*A*(T_kitchen-T_s_out) Q_dot=(T_kitchen-T_refrig)/R_total R_total=R_conv_i+2*R_metal+R_ins+R_conv_o R_conv_i=1/(h_i*A) R_metal=L_metal/(k_metal*A) R_ins=(L_ins*Convert(cm, m))/(k_ins*A) "L_ins is in cm"
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Unformatted text preview: R_conv_o=1/(h_o*A) k ins [W/m.C] L ins [cm] 0.02 0.2553 0.025 0.3191 0.03 0.3829 0.035 0.4468 0.04 0.5106 0.045 0.5744 0.05 0.6382 0.055 0.702 0.06 0.7659 0.065 0.8297 0.07 0.8935 0.075 0.9573 0.08 1.021 k metal [W/m.C] L ins [cm] 10 0.4465 30.53 0.447 51.05 0.4471 71.58 0.4471 92.11 0.4471 112.6 0.4472 133.2 0.4472 153.7 0.4472 174.2 0.4472 194.7 0.4472 215.3 0.4472 235.8 0.4472 256.3 0.4472 276.8 0.4472 297.4 0.4472 317.9 0.4472 338.4 0.4472 358.9 0.4472 379.5 0.4472 3-19...
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