Cableizer ®

Air velocity required to remove all heat by ventilation

This is the minimal velocity of the air inside the tunnel in order to remove all generated heat by ventilation.

Symbol
$V_{air,min}$
Unit
m/s
Formulas
$\frac{W_{sum} L_{T}}{C_{vair} A_{t} \left(\theta_{at,max}-\theta_{init}\right)}$
Related
$A_{t}$
Cross-sectional area (inner) tunnel [m$^2$]
$C_{vair}$
Volumetric heat capacity air [J/(K.m$^3$)]
$L_{T}$
Length tunnel [m]
$\theta_{at,max}$
Air temperature permissible [°C]
$\theta_{init}$
Air temperature without load [°C]
$W_{sum}$
Sum of total losses of all systems [W/m]