Heat loss (W/m) diagrams for insulated pipes - ranging 1/2 to 6
inches - insulation thickness 10 - 80 mm - temperature difference 20 -
180 deg C
The heat loss diagrams below is based on metal pipes with 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

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