Study on the Time Decreasing Trend Model of Condenser Cleanness Coefficient

The fouling on the condenser water-side wall is an important factor that impacts the cleanness coefficient of condenser in the optimization of designing, operation and improvement of opening cooling water circulation system. Based on the mechanism of foul-forming, a comprehensive prediction model of fouling growth on condenser water-side wall is constructed in this paper. Through analyzing the simplified theoretical model of fouling growth, the characteristic of fouling deposit, effects of working time and cooling water velocity are discussed. Taking a 600MW supercritical steam power plant's condenser as an example, the accurate estimation and prediction of cleanness coefficient can be obtained with this model. The effects of the temperature difference and condenser pressure are analyzed at the same time, and the work conditions of water circulating with different cleanness coefficient are obtained. With the evidence of some condenser fouling growth, it can be concluded that the present model is validity and would be contributed to water circulating optimization of condenser.