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Thermal capacitance of insulation, 2nd portion (IEC 60853)

Symbol
$Q_{it2}$
Unit
J/(m.K)
Formulae
$\frac{\frac{\sigma_i \pi}{4} D_{it} \left(D_{it}-d_{ct}\right)}{{10}^6}$
Related
$d_{ct}$
External diameter of conductor for transient calculations [mm]
$D_{it}$
Diameter over insulation for transient calculations [mm]
$\pi$
Archimedes' constant $\pi$
$\sigma_i$
Volumetric heat capacity of insulation material [J/(K.m$^3$)]
Used in
$Q_{B,i}$
Element B of two-part thermal circuit, insulation [J/(m.K)]