H 2 O and many other varying elements, such as silica and carbonate. These additional elements are detrimental to a boiler. Solid particles entrained in the circulating water will deposit on heat transfer surfaces, where boiling is most vigorous in the highest heat-release regions of the furnace. These compounds will deposit on the boiler tubes and impede heat transfer by forming an insulating layer. Chemical treatment of the feedwater neutralizes such elements, allowing their removal from the system and therefore eliminating their detriment.
Specific tests indicate the contents of the system's water.
Phosphate content - measures the hardness of the water. If the water is hard, it will necessitate more heat to create steam, thus consuming more fuel. Ferric steels will be more rapidly attacked in strongly acidic and strongly caustic water solutions. The proper pH balance must be maintained to prevent corrosion of this type. If water has a high pH, it is known to be caustic.