Cableizer ®

Outer diameter duct

If the cable is not in a duct, $Do_d$ is equal to the cable outer diameter $D_e$.

Symbol
$Do_d$
Unit
mm
Formulas
$Di_d+2\left(t_d+t_{dp}\right)$
Related
$Di_d$
Inner diameter duct [mm]
$t_d$
Thickness duct [mm]
$t_{dp}$
Thickness protective cover [mm]
Used in
$A_d$
Cross-sectional area duct wall [mm$^2$]
$D_{do}$
Outer diameter duct [m]
$D_o$
Outer diameter [m]
$h_{lg}$
Ratio of heat dissipation coefficients
$T_{4d}$
Thermal resistance daily load cycle [K.m/W]
$T_{4ii}$
Thermal resistance duct wall [K.m/W]
$T_{4w}$
Thermal resistance weekly load cycle [K.m/W]
$T_{4y}$
Thermal resistance yearly load cycle [K.m/W]
$t_d$
Thickness duct [mm]