Experimental Study of High-Pressure Fogging Cooling System in World Expo Axis

This paper presents an experimental study of cooling effectiveness of the designed high-pressure fogging system in the World Expo axis. Eligible meteorological condition of air temperature is upon 30 degrees C and its humidity is below 70% and different pressures of the pump were conducted in the experiment. The experimental results shows the high-pressure fogging system has a positive cool effect in the Expo axis, as a result of 2-3. temperature descent and about 10% humidity ascend. Under fogging pressures of 7MPa, 5MPa, 3MPa, the temperature descent is respectively 4.7 degrees C, 3.6 degrees C and 3.2 degrees C, and relative humidity raise in 20.7%, 12.2% and 14.3%, furthermore, the black bulb temperature correspondingly drop 4.61 degrees C, 4.1 degrees C, 2.35 degrees C at the distance of 1m from the fogging pole.