Thermodynamics HW Solutions 163

Thermodynamics HW Solutions 163 - R_conv_2=1/(h_2*A)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 3 Steady Heat Conduction 3-21 "GIVEN" A=1.2*2 "[m^2]" L_glass=3 "[mm]" k_glass=0.78 "[W/m-C]" "L_air=12 [mm], parameter to be varied" T_infinity_1=24 "[C]" T_infinity_2=-5 "[C]" h_1=10 "[W/m^2-C]" h_2=25 "[W/m^2-C]" "PROPERTIES" k_air=conductivity(Air,T=25) "ANALYSIS" R_conv_1=1/(h_1*A) R_glass=(L_glass*Convert(mm, m))/(k_glass*A) R_air=(L_air*Convert(mm, m))/(k_air*A)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: R_conv_2=1/(h_2*A) R_total=R_conv_1+2*R_glass+R_air+R_conv_2 Q_dot=(T_infinity_1-T_infinity_2)/R_total L air [mm] Q [W] 2 307.8 4 228.6 6 181.8 8 150.9 10 129 12 112.6 14 99.93 16 89.82 18 81.57 20 74.7 2 4 6 8 10 12 14 16 18 20 50 100 150 200 250 300 350 L air [mm] Q [W] 3-6...
View Full Document

This note was uploaded on 01/14/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.

Ask a homework question - tutors are online