Condensation

From Thermal-FluidsPedia

Condensation occurs when a saturated or superheated vapor – pure or multi-component – comes into contact with an object, such as a wall or other contaminant, that has a temperature below the saturation temperature.

• Basics

Heterogeneous and homogeneous condensation, and phase diagrams for condensation of binary vapor.

• Dropwise Condensation

Dropwise condensation formation theories, critical droplet radius, thermal resistances, and heat transfer coefficient.

• Filmwise Condensation

Regimes, governing equations for a binary vapor mixture, stagnant pure vapor reservoir, effects of vapor motion, turbulent film condensation, cylinders and spheres, and effects of noncondensable gas.

• Nongravitational Condensate Removal

Suction at the porous wall, forced vapor flow, centrifugal field, and capillary action.

• Film Condensation in Porous Media

Inclined wall, and effect of surface tension.