Cableizer
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Outer diameter duct

Symbol
$D_{do}$
Unit
m
Formulas
$\frac{Do_d}{1000}$
Related
$Do_d$
Outer diameter duct [mm]
Used in
$A_{do}$
Duct surface (outer) [m$^2$]
$h_{conv,ext}$
Heat transfer coefficient convection riser—air [W/(K.m$^2$)]
$\mathrm{Re}_{air}$
Reynolds number air
$T_{4iii}$
Thermal resistance ambient [K.m/W]
$W_{conv,ext}$
Convective heat transfer riser—air [W/m]
$W_{de}$
Losses outside of riser [W/m]
$W_{rad,ext}$
Radiation heat transfer riser—air [W/m]