Air temperature in tunnel at outlet

Symbol
$\theta_{at_{L}}$
Unit
$^{\circ}$C
Formulae
$\theta_{at_{0}} + \left(1 - e^{- \frac{L_{T}}{L_{0}}}\right) \left(N_{c} N_{sys} W_{tot} \left(T_{e} + T_{t}\right) + \theta_{a} - \theta_{at_{0}}\right)$
$\theta_{a}$
Ambient temperature [$^{\circ}$C]
$\theta_{at_{0}}$
$\theta_{t_{L}}$