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The secondary air in the stream-liner coal burner is fed flames from which direction?

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The secondary air in the stream-liner coal burner is fed flames from which direction?

(a) At straight angle

(b) Opposite to the fuel flow

(c) At Right angle

(d) Along the fuel

I had been asked this question during an interview.

The doubt is from Fuel Burning Equipments topic in chapter Steam Power Plant of Energy Engineering

1 Answer

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The correct answer is (c) At Right angle

Explanation: Heated secondary air in the stream-liner coal burners fed at right angles to the flame. It ensures proper mixing of air and fuel. This type of burner is suitable for burning fuels with low volatile matter as fuel flows at low velocity.

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