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What is Henry’s Law?
Henry’s Law asserts that gas solubility in a solution decreases as the gas partial pressure above the solution decreases. See (The Deaerating Principle Page) for more information.
Why use a Deaerator?
There are many advantages to deaerating water prior to boiler input. The major ones are:
- Removal of corrosive oxygen and carbon-dioxide controls corrosion within the boiler and piping, extending the life expectancy of the system and reducing maintenance costs.
-The deaerating process not only removes non-condensable gases (mainly oxygen and carbon-dioxide), it also heats the water because it is a direct contact feed water heater. This reduces fuel consumption by the boiler.
- Mechanical deaeration by deaerators greatly reduces the amount of chemicals used for water conditioning resulting in cost savings.
What is the most efficient type of Deaerator?
The spray and tray type is the most widely used and most efficient type of Deaerator. This type also offers the widest range of guaranteed performance.
Why are spray type deaerators and steam sparger type deaerators limited in their turn-down ability?
These types of Deaerators use holes (fixed orifices) for steam distribution and as the unit is turned down the needed steam velocities are lost and performance suffers.
How often should I inspect my Deaerator?
Yearly is recommended.
How would I know that there is something mechanically wrong with my Deaerator?
You will see reduced water temperature coming out of the Deaerator storage tank and/or increased dissolved oxygen readings. |
