Heat Loss Diagrams Insulated Pipes

Engineering ToolBox > Heat Loss Diagrams Insulated Pipes

Heat loss (W/ft) diagrams for insulated pipes - ranging 1/2 to 6 inches - insulation thickness 0.5 - 4 inches - temperature difference 50 - 350 deg F

The heat loss diagrams below is based on metal pipes with fiber glass insulation with thermal conductivity 0.25 Btu/h ^oF ft²/in, outdoor condition with moderate wind 20 mph. A safety factor of 10% is included.

indoor location - reduce values with 10%
mineral wool insulation - increase values with 6%
rigid cellular polyurethane - reduce values by 30%
Heat loss diagram (W/ft)

Pipe Heat Loss - Insulation thickness 4 inches

pipe heat loss diagram insulation thickness 4 inches

1 W/ft = 3.41 Btu/h ft = 3.28 W/m
1 ^oF = 0.555 ^oC

Pipe Heat Loss - Insulation thickness 3 inches

pipe heat loss diagram insulation thickness 3 inches

Pipe Heat Loss - Insulation thickness 2.5 inches

pipe heat loss diagram insulation thickness 2.5 inches

Pipe Heat Loss - Insulation thickness 2 inches

pipe heat loss diagram insulation thickness 2 inches

Pipe Heat Loss - Insulation thickness 1.5 inches

pipe heat loss diagram insulation thickness 1.5 inches

Pipe Heat Loss - Insulation thickness 1 inch

pipe heat loss diagram insulation thickness 1 inch

Pipe Heat Loss - Insulation thickness 0.5 inches

pipe heat loss diagram insulation thickness 0.5 inches