What is the blowdown in boiler

Question

Accepted Answer

Blowdown in a boiler is the process of removing impurities and sediment from the boiler water to maintain its efficiency and prevent corrosion.

Blowdown is necessary to control the concentration of dissolved solids in the boiler water.
It involves draining a portion of the boiler water and replacing it with fresh water.
Blowdown helps to remove sludge, scale, and other impurities that can accumulate in the boiler.
Regular blowdown prevents the build-up of harmful deposits and maintains the boiler's heat transfer efficiency.
There are two types of blowdown: bottom blowdown and surface blowdown.
Bottom blowdown removes sediment and sludge from the bottom of the boiler.
Surface blowdown removes dissolved solids from the surface of the water.
Blowdown is typically done manually or automatically based on the boiler's water quality and operating conditions.

Accepted Answer

To remove impurities ,scale and sluge.

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