Abstract: Abstract:After adding reclaimed water to doublepass condenser, the risk of scale formation in the tube of condenser has increased. According to calculation and analysis, this article brings out the method of adding middle water temperature measuring point in the returning water chamber of doublepass condenser. This method helps find out the reason why the heat transfer of condenser is poor and the degree of supercoiling is high, which can monitor the scale formation and air leakin in air leakin effectively. 

Key words: Keywords:doublepass condenser, reclaimed water, scale formation, water temperature measuring point