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.

Basics, dropwise condensation, filmwise condensation, vertical plate, cylinder and sphere, nongravitational condensate removal, and film condensation in porous media.