General FeaturesLow sound levelLow heightNo vibration transmissionFRP Casing, for low maintenance and total corrosion resistancePlastic internals for complete corrosion resistanceModular designIntegrated frame supportEpoxy coated fansDocumentation DOWNLOAD Assembly and Operation Manual DOWNLOAD Product Catalogue DOWNLOAD Sound Levels DOWNLOAD Nozzel Pressure DropConfigurationModel* Dissip. (kW)Dry Weight (kg)Service Weight (kg)Fan Power (kW)Length (mm)Width (mm)Height (mm)Dim. DrawingPlane DWGTechnical FeaturesWITHOUT ATTENUATIONEWK-D 225/234971814954.3319116122470Open Download [-]EWK-D 225/336071814955.3319116122470Open Download [-]EWK-D 225/437971814956.2319116122470Open Download [-]EWK-D 324/2490101021355.3358518962535Open Download [-]EWK-D 324/3518101021357.0358518962535Open Download [-]EWK-D 324/4546101021358.5358518962535Open Download [-]EWK-D 450/268599028707.1415122092565Open Download [-]EWK-D 450/372099028709.4415122092565Open Download [-]EWK-D 450/4758990287011.4415122092565Open Download [-]EWK-D 680/210351500430010.3518323692600Open Download [-]EWK-D 680/310881500430013.6518323692600Open Download [-]EWK-D 680/411461500430016.4518323692600Open Download [-]EWK-D 900/212752100550012.9648620922600Open Download [-]EWK-D 900/313922100550017.2648620922600Open Download [-]EWK-D 900/415172100550020.6648620922600Open Download [-]WITH ATTENUATIONEWK-DA 225/2349129220694.4419116123465Open Download [-]EWK-DA 225/3360129220695.9419116123465Open Download [-]EWK-DA 225/4379129220697.3419116123465Open Download [-]EWK-DA 324/2490165027755.9458518963550Open Download [-]EWK-DA 324/3518165027758.0458518963550Open Download [-]EWK-DA 324/4546165027759.9458518963550Open Download [-]EWK-DA 450/2685221837367.9509622093600Open Download [-]EWK-DA 450/37202218373610.7509622093600Open Download [-]EWK-DA 450/47581590358013.0509622093600Open Download [-]EWK-DA 680/210353157588111.4617823693890Open Download [-]EWK-DA 680/310883157588115.4617823693890Open Download [-]EWK-DA 680/411463157588118.9617823693890Open Download [-]EWK-DA 900/212753619683314.5749620923890Open Download [-]EWK-DA 900/313923619683319.7749620923890Open Download [-]EWK-DA 900/415173619683324.5749620923890Open Download [-]* Heat rejection at the following conditions: Tin: 35,0 ºC, Tout: 30,0 ºC, Twb: 24,0 ºCAdditional EquipmentSound attenuators for air inlet and outlet.Winter Pack (Thermostat & immersion heater)Variable speed drivesDosing systems for water treatmentWorking PrinciplesEvaporative cooling towers are the most energy efficient means of cooling water. Hot process water or condenser water from a chiller enters the distribution system at the top of the cooling tower and falls by gravity in counter-flow to the air being drawn or forced through the cooling tower by the fan. As the air passes the water a small proportion is evaporated cooling the remaining water which is collected in the cooling tower sump. The cooled water is then returned to the process or chiller.The difference between the required cold water temperature and the wet bulb temperature (called the approach temperature), is significant in determining the size of the tower. The smaller the approach the larger the required heat exchange surface. The approach temperature must be at least 3-4 °C.The heat exchange surface known as packing provides close contact between the air and water in open towers. High efficiency film packings provide a large surface area over which the cooling water is spread increasing the evaporative cooling effect.