A cooling tower's performance is determined by many factors, cooling tower fills is one of the most import and parts a cooling tower, its types and quality decide whether a cooling tower could transfer heat efficiently or not. If you choose right type of cooling tower fill, water will flowing much more surface area, hot water will be cooled quickly.
There are two common types of fill media, splash fill, and film fill. But what's the difference between the two? So, how do you choose the best one to increase efficiency and optimal performance?
Splash fill consists of layers of horizontal bars or slats. When the warm water hits the surface of these bars, it spreads, breaks, and forms small droplets. As more droplets are formed, there is increased contact between air and water, which accelerates the rate of cooling and evaporation.
Splash fill media were traditionally made from wood, but modern designs make use of PVC. PVC is more efficient as it facilitates better heat transfer.
Splash fill is ideal for use in industries that generate poor quality or dirty water. As the water is broken up to form small droplets, there is no medium in which dirt and debris can be caught and trapped; therefore, the efficiency of the medium is not reduced.
♦ Film Fill
Film fill consists of closely placed thin sheets of PVC material with a flat, corrugated or otherwise textured surface. It creates a large surface area on which the hot recirculated water spreads forming a thin film in contact with air. It allows heat to evaporate at an accelerated rate and cools the water faster.
Film fill is ideal for cooling clean and quality water, as any debris in the water can build up in the film media and reduce its efficiency and overall performance of the cooling tower. However, you can get a film fill with wider flutes if your water is not clean.