Engineering ToolBox > Heat Loss Diagrams Insulated Pipes
Heat loss (W/m) diagrams for insulated pipes - ranging 1/2 to 6 inches - insulation thickness 10 - 80 mm - temperature differences 20 to 180 deg C
The heat loss diagrams below can be used as an indication of the heat loss from insulated pipes at various temperature differences. The diagrams are based on
- metal pipes
- fiber glass insulation with thermal conductivity 0.036 W/mK
- outdoor condition with moderate wind 9 m/s
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/m)
Pipe Heat Loss - Insulation thickness 80 mm
- 1 W/m = 0.305 W/ft
- 1 oC = 1.8 oF
Pipe Heat Loss - Insulation thickness 50 mm
Pipe Heat Loss - Insulation thickness 40 mm
Pipe Heat Loss - Insulation thickness 30 mm
Pipe Heat Loss - Insulation thickness 25 mm
Pipe Heat Loss - Insulation thickness 20 mm
Pipe Heat Loss - Insulation thickness 10 mm
