Cableizer ®

Air temperature z

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

Symbol
$\theta_{at,z}$
Unit
°C
Formulas
$\theta_{init}+\left(\theta_{a}+\left(T_{t}+T_{e}\right) N_{sys} N_{c} W_{tot}-\theta_{init}\right) \left(1-e^{\frac{-z}{L_{0}}}\right)$
Related
$L_{0}$
Reference length of the tunnel [m]
$N_{c}$
Number of sources in system
$N_{sys}$
Number of parallel systems in the same confinement
$T_{e}$
External thermal resistance of tunnel [K.m/W]
$T_{t}$
Star thermal resistance tunnel [K.m/W]
$\theta_{a}$
Ambient temperature [°C]
$\theta_{init}$
Air temperature without load [°C]
$W_{tot}$
Total losses (object) [W/m]
Used in
$\theta_{o,z}$
Temperature object surface z [°C]
$\theta_{t,z}$
Temperature wall z [°C]
$W_{a,z}$
Heat removed by air z [W/m]