Why is wetted media evaporative cooling design superior to other methods of (evaporative) cooling…?
Properly designed to control air velocity uniformly across the face area of the media and proper water delivery method, wetted media is the simplest yet most effective method of evaporative cooling. Alternate versions of evaporative cooling such as direct spray or fogging systems are not necessarily true evaporative coolers. The ideal evaporative cooler adds moisture to the air molecule and is delivered in a gaseous or vapor form thereby cooling the air. The direct spray or fogging systems appear to deliver the air in a wet spray which operates in a slightly different process than the wetted media type cooler. “Specific humidity” increases the heat rate of the turbine which is a negative effect. The colder air contains more mass and therefore more oxygen density which increases the efficiency (output) of the fuel burned by the turbine. The negative effect of increased humidity in the air is offset by the positive effect of higher output due to the higher oxygen density in the colder ai
