Fouling is one of the major factors which decreases the efficiency of the evaporative condensor. Based on the fouling model in the reference and experiment data,this paper analyzed the effect of the thickness of the fouling layer on the amount of energy that expels. The results show that dirt can at most decrease the efficiency of heat-removal equipment by 75%. The effect on the heat-exchange performance of the temperature variation of the wetbulb was analyzed. The result shows that the increase rate of hea...