Overall thermal resistance between buried cable in a multilayer backfill and the ground surface.

Symbol
$R_{\mathrm{CG}}$
Unit
K.m/W
Formulae
$\frac{0.5}{\frac{1}{R_{\mathrm{q3}}} + \frac{1}{R_{\mathrm{q2}}} + \frac{1}{R_{\mathrm{q1}}}}$
Related
$R_{\mathrm{q1}}$
Resistance 1 [K.m/W]
$R_{\mathrm{q2}}$
Resistance 2 [K.m/W]
$R_{\mathrm{q3}}$
Resistance 3 [K.m/W]