The issue with the temperature of the condensate pump
Thread Content
My facility is equipped with a condensate tank, into which condensate from various sources flows. The condensate tank is located on the first floor of the facility, and there are condensate pumps on the ground level that are used to pump the water out of the tank. When the temperature of the water in the tank reaches around 126 degrees, the pump starts to experience issues and its pumping capacity becomes unstable. At a temperature of 120 degrees, however, the condensate pump operates steadily. Why does it fail at 126 degrees? What is the principle behind this, or what is the design principle of such pumps? Please share your thoughts
What is the pressure in the tank? Has it reached the critical temperature? Is the amount of vaporization high?
First, know your operating pressure
The pressure in the tank is around 0.4 Mpa
The pressure in the tank is around 0.4 Mpa
Excluding other factors such as pump equipment, liquid level potential energy, and temperature measurement errors, an increase of 6°C is exactly enough to raise the boiling point of the hot water at the pump inlet to this pressure, resulting in cavitation. 126 When the flow rate is unstable, conducting an experiment under safe conditions will show that raising the liquid level in the tank to its maximum increases the potential energy, thereby making the flow rate more stable; if you reduce the pressure in the tank, the flow rate becomes even more unstable
It is related to pressure; it happens that this value reaches a critical point within the 6°C range. It is recommended to increase the pressure in the pipes or tanks in order to raise the boiling point of the liquid. This phenomenon can then be eliminated.