The purpose of the fill material (or support material) is to give to the air the most water surface as possible so that the same water can evaporate and, hence, become cool. The bigger the water surface exposed to the air, the more water gets cooled.
The concept of film material
Based on the physical principle of adhesion
, water sprinkled on a sheet (also glass sheet) sticks to the surface, forming a film. The air current (forced or induced) hitting the water causes evaporation and, hence, cooling. Because of evaporation (and/or contact) between the two flows of air and water, the amount of sheet surface is directly proportional to cooling tower performance.
The concept of splash material
Based on the physical principle of cohesion, water splash has the ability to aggregate droplets. Splash material tends to break aggregated water droplets and to reaggregate them again by cohesion.During this operation of aggregation-breaking-reaggregation of water droplets, more water surface is given to air for evaporation and, hence, cooling.
Film versus Splash
The required surface in the material for the film support is considerably greater than the splash material. Therefore, this entails a greater surface for limestone to deposit, dust and other elements that tend to clog the air passage with increased air pressure drop and, hence, reduce the performance.
On the other hand, splash material, besides breaking water droplets in a continuous way, it works with less surface area and is capable of creating air turbulence with minimal air pressure drop.
TURBOSplash PAC ™ Ⓡ was created based on the both above mentioned concepts.