ABSTRACT
The presented paper investigates the impact of the water film thickness on the ability of evaporation from the falling water film of the water wall. The physics of these processes is quite complex, involving conjugate heat transfer among solid-liquid film-gaseous phase together with the change of phase associated with evaporation. These processes depend not only on air and water temperatures, but also on the thickness of the water film and air velocity. For this purpose, a water wall prototype was designed and constructed, where water runs down the glass pane and forms the water film. The experiment was carried out in three measurement cycles where the water flow rate was set in a range of 300 l/h to 500 l/h. There is an assumption that with different flow rate the water film thickness and evaporation ability of the water wall is different. The experiment is carried out under laboratory conditions, temperatures of water, air and relative humidity are similar.
