What are Deaerator Tanks :
The Deaerator tank acts as a Feed Water Tank to store cold and hot fluid in order to remove dissolved air or non-condensable gases from the fluid.
Thermodyne manufactures Deaerator tanks that suit the customer needs.
Deaerator Tanks Uses:
Water or any fluid which is used as a medium for heat transfer generally contains Oxygen and other non-condensable gases in it. These gases dissolved in a fluid acts as an insulation to heat transfer. Due to the presence of these gases in a fluid, heat transfer rates from fuel to fluid is generally reduced which in turn will increase the fuel required for heating, thereby decreasing the efficiency.
In deaerator tank ( aka Feed Water Tank), carbon dioxide (CO2), Non-dissolved Gas, and oxygen (O2) are released as gases and combine with water (H2O) to form carbonic acid, (H2CO3).
Deaerator Tank Working Principle
Deaerator tank works on a principle that:-
The solubility of gases in a fluid decreases with increase in the temperature of a fluid and the pressure of gas in a fluid is directly proportional to the partial pressure of gas above it, so removing the gas above the fluid decreases the pressure above the fluid and causes the gas dissolved in a fluid to escape the fluid in order to balance the pressure.
Condensate or process fluid returning from the process is generally at high temperature than the ambient temperature and the fluid which needs to be fed is at the lower temperature than the ambient. Both the feed and process fluid is kept together in a tank in order to increase the temperature of the feed by taking heat from the process fluid.
Sometimes some part or partial steam is also injected into a tank through a perforated steam pipe to heat the feed water and to maintain its operating temperature. The level of fluid in a tank is such that, some space above the fluid is kept free for the air to escape the fluid. An air vent is provided at the top of the tank so that all the air could escape the tank leaving behind any vapor formed.
Thermodyne manufactures deaerator tanks that come with adequate controllers for easy operation. Our deaerator tank is provided with the water level controller and the gauge glass to monitor and control the water level in the tank.
Safety Valve is provided on the top of the tank to prevent the operating pressure of the tank to exceed the design pressure.
Advantages of Deaerator Tanks :
- Removing these gases from the feed protects the boiler or heater tubes from getting corroded, thereby increasing the life of the equipment.
- Increases the efficiency of a boiler.
- It also acts as a Feed tank which provides Net Positive Suction Head to the feed.
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We, Thermodyne Boilers, are trusted boiler & boiler parts manufacturer in India. We supply Deaerator Tank pan India.
Also Read: Importance of Deaerator Tanks