Cableizer ®

Star thermal resistance air

Symbol
$T_{a}$
Unit
K.m/W
Formulas
$\frac{T_{at} \frac{T_{sa}}{N_{sys} N_{c}}}{\frac{T_{st}}{N_{sys} N_{c}}+\frac{T_{sa}}{N_{sys} N_{c}}+T_{at}}$
Related
$N_{c}$
Number of sources in system
$N_{sys}$
Number of parallel systems in the same confinement
$T_{at}$
Thermal resistance convection air—tunnel [K.m/W]
$T_{sa}$
Thermal resistance convection object—air [K.m/W]
$T_{st}$
Thermal resistance radiation object—tunnel [K.m/W]
Used in
$\Delta \theta_{0t}$
Air temperature increase [K]
$L_{0}$
Reference length of the tunnel [m]
$T_{4t}$
Equivalent thermal resistance for tunnel [K.m/W]
$\theta_{o,L}$
Temperature object surface at outlet [°C]
$\theta_{o,z}$
Temperature object surface z [°C]
$\theta_{t,L}$
Temperature wall at outlet [°C]
$\theta_{t,z}$
Temperature wall z [°C]
$W_{a,L}$
Heat removed by air at outlet [W/m]
$W_{a,z}$
Heat removed by air z [W/m]