Thermal resistance of protective cover

Symbol
$T_{prot}$
Unit
K.m/W
Formulae
$\frac{1}{2k_{prot} \pi} \ln\left(\frac{D_{prot}}{D_{encl}}\right)$GIL/PAC
$\frac{1}{2k_{prot} \pi} \ln\left(\frac{D_{prot}}{D_{ins}}\right)$heat source
Used in
$\theta_{c,z}$
$\theta_{encl}$
$U_{wall}$
OHTC of pipe wall [W/(K.m$^2$)]