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
$\theta_{at,0}+\left(\theta_a+\left(T_t+T_e\right) N_{sys} N_c W_{tot}-\theta_{at,0}\right) \left(1-e^{\frac{-z}{L_0}}\right)$