Film condensation in a tube with counter current vapor flow
Abstract
The Nusselt analysis for laminar film condensation was extended for countercurrent vapor flow inside a vertical tube. This was done for both constant wall temperature and heat flux by accounting for the interfacial shear due to vapor friction and suction. Therefore, the decrease in the stream flow rate due to condensation is considered. A numerical solution of the problem is required and the results are given for special cases to illustrate the relative influence of the interfacial shear with respect to mass transfer. The same analysis can be applied to film condensation in a vertical tube with a closed top. This situation is associated with the condenser portion of a gravity assisted wickless heat pipe.
- Publication:
-
AIAA, Aerospace Sciences Meeting
- Pub Date:
- January 1983
- Bibcode:
- 1983aiaa.meet....3F
- Keywords:
-
- Counterflow;
- Film Condensation;
- Heat Pipes;
- Liquid-Vapor Interfaces;
- Pipe Flow;
- Two Phase Flow;
- Circular Tubes;
- Flow Resistance;
- Heat Flux;
- Shear Stress;
- Suction;
- Thermosiphons;
- Wall Temperature;
- Fluid Mechanics and Heat Transfer