Convection heat transfer coefficient, gas to duct

Symbol
$h_{conv,gd}$
Unit
W/(K.m$^2$)
Formulae
$\frac{h_{conv,og} D_o}{D_{di}}$Riser closed at both ends (Anders)
$\frac{\left(\frac{0.6D_o}{D_{di}}+0.4\right) k_{gas} \mathrm{Nu}_{gd}}{\delta_d}$Riser open at both ends (Anders)
$\frac{k_{gas} \mathrm{Nu}_{gd}}{D_{di}}$Riser open at top and closed at bottom (Anders/Hartlein & Black)
$h_{conv,og}$Riser closed at both ends (Hartlein & Black)
$h_{conv,og}$Riser open at both ends (Hartlein & Black IIa)
$\frac{k_{gas} \mathrm{Nu}_{gd}}{\delta_d}$Riser open at both ends, 0.1 ≤ $Ra$ < 10^5 (Hartlein & Black IIb)
Used in