Application of unitary direct evaporative cooling air conditioner to a traffic control booth in Xian

Yan Zheng, Huang Xiang, Huang Kaixin and An Miaomiao

2019.09.17

 In a cooling season, measures and analyses the actual application effect of a unitary direct evaporative cooling air conditioner used in a traffic control booth in Xian. The test results show that when the outdoor dry bulb temperature is 40 ℃, the outlet air temperature can be maintained at about 29 ℃, the average wet bulb efficiency is 65.68%, and the water consumption is 5.85 kg/h. Compares this conditioner with a split air conditioner with cooling capacity of 3 500 W and power consumption of 960 W. The results show that the operating cost of the unitary air conditioner is only 1/8 of that of the split air conditioner. The air conditioner can reduce CO2 of 290.304 kg, SO2 of 1 536.192 g and NOx of 133.056 g per year and saves 244.34 kg of standard coal, with energy efficiency ratio of 29.8%. The unitary air conditioner has obvious advantages of economic and environmental protection benefits comparing with the split air conditioner, which provides a practical and economical cooling method for front-line workers.