Chemical and Process Engineering Resources

Section 7: Film Condensation
All properties without subscript are for condensate at the mean temperature .
Exception: ?D = vapor density at saturation temperature Ts
7-1 Laminar Film Condensation
Vertical wall or tube:
![]() | (Nusselt) | Eq. (35) |
Tw = mean wall temperature
Horizontal cylinder:
![]() | (Nusselt) | Eq. (36) |
Tw = const.
7-2 Turbulent Film Condensation
For vertical wall:
Re = C Am
Recrit = 350
For turbulent film: C = 3.8 x 10-3 and m = 3/2 (Grigull).
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