Thermal resistance offered by the material in layer 3 along the flow path q1.

Symbol
$R_{\mathrm{q13}}$
Unit
K.m/W
Formulae
$\frac{1}{k_{\mathrm{3}} \operatorname{atan}{\left (\frac{s_{\mathrm{T}}}{a_{\mathrm{T}}} \right )}} \ln{\left (\frac{2}{D_{\mathrm{o}}} \left(C_{1} \left(- a_{\mathrm{T}} + c_{\mathrm{T}}\right) + a_{\mathrm{T}}\right) \right )}$
Related
$a_{\mathrm{T}}$
$k_{\mathrm{3}}$
Used in
$R_{\mathrm{q1}}$
Resistance 1 [K.m/W]