Experimental Studies of Droplet Evaporation in High-temperature Air and CO2

Spray evaporative cooling is in a wide range of application in the steel converter and electric furnace. The research of spray is based on that of a single droplet. Equipment is designed and CCD high-speed camera is used to attain the evaporation rules of suspended droplet with the diameter in range of 1.6 to 1.8 mm in the high-temperature air and CO₂, the result tells that traditional D²-law is not followed by drop evaporation in “hot” air and CO₂, the gas radiation of triatomic CO₂ on droplet is significant. These findings provide certain foundation for the further evaporation research of spray droplet in high-temperature air.