# Temperature of tunnel wall at z

Temperature of the inner tunnel wall at the point z in the cable route in the tunnel.

Symbol
$\theta_{t,z}$
Unit
°C
Formulae
$\theta_{at,z}+T_a W_{a,z}-T_t \left(N_{sys} N_c W_{tot}-W_{a,z}\right)$
Related
$T_a$
$T_t$
$\theta_{at,z}$
$W_{a,z}$
$W_{tot}$
Used in
$\theta_{to,z}$