Thermal resistance 22 of multi-layer backfill

Thermal resistance of 2nd segment (soil) along flow path $\Phi_2$ of the multi-layer backfill method.

Symbol

$R_{q22}$

Unit

K.m/W

Formulae

$\rho_4 C_{b4} \left(\frac{L_{cm}+d_{im}}{s_{b3}+s_{b4}}\right)^{C_{b5}}$

Related

$C_{bq}$

Constants $C_1$ - $C_7$ of multi-layer backfill

$d_{im}$

Imaginary layer of soil [m]

$L_{cm}$

Depth of laying [m]

$\rho_4$

Thermal resistivity of soil [K.m/W]

$s_{b3}$

Thickness from object to top of bedding layer [m]

$s_{b4}$

Thickness from object to bottom of bedding layer [m]

Used in

$R_{CG}$

Thermal resistance of multi-layer backfill [K.m/W]