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Thermal resistance protective jacket

Thermal resistance of the protective jacket over the insulation of a heat source, e.g. a district heat pipe.

Symbol
$T_{hsj}$
Unit
K.m/W
Formulas
$\frac{1}{k_{hsj}} \frac{1}{2\pi} \ln\left(\frac{D_{hsj}}{D_{hsi}}\right)$
Related
$D_{hsi}$
Diameter over pipe insulation [mm]
$D_{hsj}$
Diameter over protective jacket [mm]
$k_{hsj}$
Thermal conductivity protective jacket material [W/(m.K)]
$\pi$
Archimedes' constant $\pi$
Used in
$T_{hs}$
Thermal resistance heat source [K.m/W]