# Mean temperature of the medium in the duct

This is the mean temperature of the medium filling the space between cable and duct.

With crossing heat sources, a temperature rise of $\Delta\theta_{0x}$ applies at the hottest point.

Symbol
$\theta_{dm}$
Unit
°C
Formulae
$\frac{\theta_e}{2}+\frac{\theta_{di}}{2}$
Related
$\Delta \theta_{0x}$
$\theta_{di}$
$\theta_e$
Used in
$T_{4i}$
$\theta_{gas}$