Humid climate. Will the system work?

Yes, but only if the water fog droplets are air aspirated. Cooling of air by evaporating water (water changing to vapor) can only occur when the relative humidity (RH) is less than 100% (ie: unsaturated). As the RH drops from 100%, more water can evaporate into the air to achieve temperature drops as great as 40 degrees F. All Cool Zone Systems are engineered to achieve maximum cooling in any climate without wetting people or surfaces. That requires pressurizing the water to over 1,000 psi and forcing that water through an .008" orifice nozzle with an impeller behind the orifice. That process generates 10 micron water droplets. The smaller the water droplet the greater is the exposed surface area, for that given amount of water, to flash evaporation. In desert climates (10% relative humidity) fog evaporates from static line systems to cool covered areas by 35F without wetting the ground. In humid climates (over 50%RH)static line systems will achieve only minimum cooling and will in fact make the covered area less comfortable by raising RH levels to 100%. The Cool Zone Fans, with staged fogging, move large amounts of air through the water fog droplets (air aspiration) allowing flash evaporation to occur without increasing the RH of the area being cooled. By staging the amount of water fog injected into the fans air stream, maximum cooling without wetting is achieved as only the proper amount of water is present to assure all available water is evaporated. As the temperature rises and/or the RH declines more water is added to the air stream to gain ever larger drops in temperature for people in the air from the fan. Comfort in humid areas can only be achieved by circulation of air.


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