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Element B of two-part thermal circuit, duct

Symbol
$Q_{B,d}$
Unit
J/(m.K)
Formulae
$\frac{\left(\frac{q_4 \left(T_{4i}+T_{4ii}\right)}{T_B}\right)^2 \left(\left(1-p_j\right) Q_j+Q_{d,fill}+Q_d\right)}{q_4}$
Related
$p_j$
Factor apportioning the jacket
$q_4$
Ratio of losses affecting environment
$Q_d$
Thermal capacitance of duct wall [J/(m.K)]
$Q_{d,fill}$
Thermal capacitance of duct filling [J/(m.K)]
$Q_j$
Thermal capacitance of jacket [J/(m.K)]
$T_{4i}$
Thermal resistance of medium in the duct [K.m/W]
$T_{4ii}$
Thermal resistance of the duct wall [K.m/W]
$T_B$
Element B of equivalent thermal circuit [K.m/W]
Used in
$Q_B$
Element B of two-part thermal circuit [J/(m.K)]