Archive for December, 2009

Toronto Boiler

The natural corrosion that toronto boilers have in the water varies with the impurities found in the raw water supply. One common indicator of corrosiveness is the level of pH. The more acidic the pH, the more corrosive the water. Other factors that can affect the corrosiveness of water are the quantity of dissolved minerals and gases, temperature, and velocity.
The various types of corrosion can be identified by examining the metal surface of the cooling or boiler system:

General corrosion is a uniform attack of a metal surface.

Galvanic corrosion occurs when two dissimilar metals or alloys are connected and exposed to a corrosive environment.

Pitting corrosion, or oxygen pitting, is a randomly occurring, highly localized form of attack on the metal surface and often is most destructive to the boiler or cooling system.

Erosion corrosion occurs when flow rates are excessive; the metal surface actually is worn away.

Corrosion also can be the result of micro biological organisms such as bacteria, fungus, and algae. The growth of micro biological organisms in industrial and commercial cooling systems also can foul heat exchangers and cause odor problems.

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Toronto Boiler Service

Toronto boiler service is important when getting ready for the heating season. Boiler energy in the form of heat is transferred from a fuel source to the water across a heat transfer surface. When subjected to temperature and pressure, the composition of the boiler water undergoes radical changes. Solubility levels are exceeded, the effects of dissolved gases are magnified, and the efficiency of the heat-transfer process can be affected. The structural and functional capabilities of equipment may become compromised. Improperly maintained steam boilers could even explode in a piping hot blast of super heated steam.
Scale buildup, corrosion and pitting in boiler systems lead to efficiency losses. These processes may possibly allow dangerous steam build up, stressing weakened vessels, pipe components and parts, which may lead to blockage, perhaps even leading to devastating equipment failure, complete with an explosion of super heated steam.
Equipment failure of this type may cause property damage and loss of life.
With proper equipment installed, and with a properly scheduled program of complete maintenance procedures including water treatment and mechanical inspection, a blast of this kind would not likely happen.
Scale, corrosion, and pitting in boiler systems lead to dangerous and expensive efficiency losses.
A well-balanced internal and external boiler water treatment program addresses all of the potential problems associated with boilers, including:

The control or removal of calcium and magnesium hardness through external (mechanical) pretreatment or internal (chemical) treatment.

The maintenance of proper levels of sludge conditioners to ensure that any present or precipitated suspended solids remain fluid so they can be properly blown down.

The maintenance of appropriate levels of alkalinity to ensure that proper chemical reactions are allowed to occur.

The control of dissolved oxygen through external pretreatment or through the use of a suitable oxygen scavenger.

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