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From where is the over fire or secondary air is supplied through in the sprinkler stoker?

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From where is the over fire or secondary air is supplied through in the sprinkler stoker?

(a) Air duct

(b) Nozzle

(c) Air damper

(d) Tuyere’s

I have been asked this question in my homework.

I want to ask this question from Type of Stokers in portion Steam Power Plant of Energy Engineering

1 Answer

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Correct option is (b) Nozzle

The explanation: Over fire or secondary air is supplied through nozzle. The secondary air creates high turbulence and completes the combustion of volatile matter and fine particles of the coal. The unburnt coal and ash are deposited on the grate which should be removed periodically.

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