Temperature of duct inner wall

Symbol
$\theta_{di}$
Unit
$^{\circ}$C
Formulae
$- T_{4i} n_{cc} \left(W_{I} + W_{d}\right) + \theta_{e}$cable(s) in duct
$- T_{4i} W_{hs} + \theta_{e}$heat source in duct
$\theta_{e}$
$W_{d}$
Used in
$T_{rad_{int}}$
$\theta_{de}$