deaerator
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The process parameters remained unchanged; however, the inlet pressure of the deaeration pump dropped suddenly, from around 300 kPa to just over 100 kPa. The pressure in the deaerator decreased from 60 kPa to 40 kPa, while the temperature of the deaerator did not change. As a solution, raw water was added to the deaerator at a rate of 20% and the system was operated in replacement mode for one hour. Afterwards, the pressure of the deaeration pump rose back to normal levels. This phenomenon occurred twice. What could be the cause? Does anyone know?
It’s probably the drop in deaerator pressure that causes the drop in pressure of the deaeration water pump. Is it because the pressure in the deaerator is unstable, causing it to break through the water seal?
You can analyze it this way: the inlet pressure of the deaeration pump = the pressure in the deaerator + ρgh. The decrease in the pressure of the deaerator is not equal to the decrease in the inlet pressure; therefore, only ρ and h change. Try to identify the factors that affect these parameters
It was suspected to be a water quality issue; the deaerator had its raw water replaced, and normal operation was restored after some time.
There must be changes in the dissolved gases in the raw water