M5.01 Composite Layer

Module 5.01 - Heat Transfer Through Composite Layer

Insulation #1 - Thickness, L₁, 8.00 in

Thermal Conductivity, k₁, 0.68 Btu/(hr.ft.°F)

Insulation #2 - Thickness, L₁, 0.25 in

Thermal Conductivity, k₂, 0.03 Btu/(hr.ft.°F)

Insulation #3 - Thickness, L₂, 4.00 in

Thermal Conductivity, k₃, 0.15 Btu/(hr.ft.°F)

Insulation #4 - Thickness, L₃, 6.00 in

Thermal Conductivity, k₄, 0.40 Btu/(hr.ft.°F)

Inner Temperature, T_i, 1600.0 °F

Outer Temperature, T_o, 125.0 °F

Results

R=L/(k·A)

Resistance of Insulation #1, R₁: 0.980 hr ft/Btu

Insulation #2, R₂: 0.786 hr ft/Btu

Insulation #3, R₃: 2.222 hr ft/Btu

Insulation #4, R₄: 1.250 hr ft/Btu

Total Resistance, Rc: 5.239 hr ft/Btu

Temperature Difference, Total, ΔT, 1475.0 °F

q = ΔT/Rc

Insulation #1, ΔT₁, 276.0 °F

Temperature of Interface #1, T₁, 1324.0 °F

Insulation #2, ΔT₂, 221.3 °F

Interface #2, T₂, 1102.6 °F

Insulation #3, ΔT₃, 625.7 °F

Interface #3, T₃, 476.9 °F

Insulation #4, ΔT₄, 351.9 °F

Interface #4, T₄, 125.0 °F

Heat Transfer Rate, q = 281.55 Btu/hr