Cableizer ®

Radiation heat transfer conductor→enclosure

Radiation heat transfer from conductor surface to inner wall of the PAC/GIL enclosure.

Symbol
$W_{rad,ce}$
Unit
W/m
Formulas
$\sigma n_{c} \pi D_{c} K_{ce} \left(\left(\theta_{c}+\theta_{abs}\right)^4-\left(\theta_{encl}+\theta_{abs}\right)^4\right)$Stefan–Boltzmann law
$\pi D_{c} h_{rad,ce} \left(\theta_{c}-\theta_{encl}\right)$using heat transfer coefficient
Related
$D_{c}$
Diameter conductor (outer) [m]
$h_{rad,ce}$
Heat transfer coefficient radiation conductor—enclosure [W/(K.m$^2$)]
$K_{ce}$
Radiation shape factor conductor—enclosure
$n_{c}$
Number of conductors cable
$\pi$
Archimedes' constant $\pi$
$\sigma$
Stefan Boltzmann constant [W/m$^2$K$^4$]
$\theta_{abs}$
Absolute temperature [K]
$\theta_{c}$
Temperature conductor [°C]
$\theta_{encl}$
Temperature enclosure [°C]
Used in
$T_{1}$
Thermal resistance conductor—sheath [K.m/W]
$T_{rad,ce}$
Thermal resistance radiation conductor—enclosure [K.m/W]