Research and Improvement of Deaerators in Turbine Bypass Condition

The requirement of deaerators about turbine bypass system in nuclear power station has been described in this paper. The pressure change curves of spray deaerator and tray deaerator on turbine bypass condition has also been expounded according to the calculation. The pressure of tray deaerator will increase rapidly and may be over the design pressure on transient operating condition, and some measures about system optimization or equipment improvement can resolve these problems.