Cableizer ®

Number of sources in system

Number of objects of equal size with the same load acting as sources in a system.

Symbol
$N_{c}$
Related
$D_{eq}$
Equivalent diameter of a group of round objects [mm]
Used in
$A_{d,fill}$
Free cross-sectional area inside duct [mm$^2$]
$CF_{pull}$
Conduit fill [$\%$]
$d_{hot}$
Spacing from hottest object in group [m]
$\delta \theta_{c,t,o}$
Transient temperature rise conductor by ohmic losses [K]
$F_{g}$
Gravitational force [N/m]
$g_{dry}$
Geometric constant of circle drying zone [p.u.]
$\gamma_{t}$
Attainment factor cables
$n_{cc}$
Number of conductors combined
$T_{4t}$
Equivalent thermal resistance for tunnel [K.m/W]
$T_{a}$
Star thermal resistance air [K.m/W]
$T_{s}$
Star thermal resistance object [K.m/W]
$T_{t}$
Star thermal resistance tunnel [K.m/W]
$\theta_{at,L}$
Air temperature at outlet [°C]
$\theta_{at,z}$
Air temperature z [°C]
$\theta_{o,L}$
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]
$W_{sys}$
Total losses (system) [W/m]
$\zeta_{er}$
Radiation shape factor touching cables
Choices
NbType
11 single-core or multi-core
22 single-core
33 single-core