# Air temperature in tunnel at z

Air temperature in the tunnel at the point z in the cable route.

Symbol
$\theta_{at,z}$
Unit
°C
Formulae
$\theta_{at,0}+\left(\theta_a+\left(T_t+T_e\right) N_{sys} N_c W_{tot}-\theta_{at,0}\right) \left(1-e^{\frac{-z}{L_0}}\right)$
Related
$L_0$
$T_e$
$T_t$
$\theta_a$
$\theta_{at,0}$
$W_{tot}$
Used in
$\theta_{o,z}$
$\theta_{t,z}$
$W_{a,z}$