Thermal capacitance of duct filling

Thermal capacitance of the material the duct is filled with such as air, bentonite, oil.

Symbol
$Q_{d,fill}$
Unit
J/(m.K)
Formulae
$\frac{\sigma_{d,fill} A_{d,fill}}{{10}^6}$
Related
$A_{d,fill}$
$\sigma_{d,fill}$
Used in
$Q_{B,d}$