Cableizer
Log in

Temperature of tunnel wall at outlet

Temperature of the inner tunnel wall at tunnel outlet.

Symbol
$\theta_{t,L}$
Unit
°C
Formulae
$\theta_{at,L}+T_a W_{a,L}-T_t \left(N_{sys} N_c W_{tot}-W_{a,L}\right)$
Related
$N_c$
Number of sources in system
$N_{sys}$
Number of parallel systems in the same confinement
$T_a$
Star thermal resistance of air [K.m/W]
$T_t$
Star thermal resistance of tunnel [K.m/W]
$\theta_{at,L}$
Air temperature in tunnel at outlet [°C]
$W_{a,L}$
Heat removed by air at outlet [W/m]
$W_{tot}$
Total losses per object [W/m]
Used in
$T_{st}$
Radiation thermal resistance, surface to tunnel [K.m/W]