A chimney is a structure for venting hot flue gases or smoke from a boiler, furnace or fireplace to the outside atmosphere. Chimneys are typically vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack or chimney effect. The space inside a chimney is called a flue. A chimney can be single flue or multi flue.
In a multi flue chimney several flues are enclosed within a circular reinforced concrete wind shield. There are Two types of multi flue chimney:
1. It can be one With independent concrete shafts with lining for each boiler enclosed within a concrete windshield. Floors are provided in the inter space between the chimneys and the windshield at intervals for access.
2. In another type of multiflue chimney a reinforced concrete windshield encloses flues formed only of lining brickwork. The section of flue brickwork are carried on a series of floors and beams support these load bearing floors.
Major parts of chimney
2.Flue Duct(with insulation material)
3.Foundation(pile and pile cap)
4.Concrete Wind shield
5.Flue gasses inlet
6.Elevator
7.walkway Platforms
8.Structural steel staircase
9.Control room and motor room at bottom level
10.All electrical fittings and necessary devices
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