M5.02 Composite Cylinder a Composite Cylinder

Module 5.02 - Heat Transfer Through a Composite Cylinder

Data

Thermal Conductivity of pipe, k_m = 28 Btu/(hr·ft·°F)

Thermal Conductivity of Insulation #1, k₁ = 0.033 Btu/(hr·ft·°F)

Thickness of Insulation #1, Δr₁ = 0.5 in

Bulk Temperature, Inside, T_ib = 300 °F

Bulk Temperature, Outside, T_ob = 70 °F

Film Coefficient, Inside, h_i = 1500 Btu/(hr·ft²·°F)

Film Coefficient, Outside, h_o = 2.23 Btu/(hr·ft²·°F)

Inner Film Resistance, R_i = 0.001 °F/(Btu·hr)

Pipe Material Resistance, R_m = 0.001 °F/(Btu·hr)

Insulation #1 Resistance, R₁ = 1.694 °F/(Btu·hr)

Outside Film Resistance, R_o = 0.507 °F/(Btu·hr)

Total Resistance, R_c = 2.204 °F/(Btu·hr)

Inside Film Temperature Difference, ΔT_ib = 0.13 °F

Inner Pipe Surface Temperature, T_i = 299.87 °F

Pipe Temperature Difference, ΔT_m = 0.10 °F

Outer Pipe Surface Temperature, T_m = 299.76 °F

Insulation #1 Temperature Difference, ΔT₁ = 176.81 °F

Interface Temperature, T₁ = 122.95 °F

Outer Bulk Temperature Difference, ΔT_ob = 52.95 °F

Outside Temperature, T_o = 122.95 °F

Heat Transfer Rate, q = 104.37 Btu/hr