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In which direction does fuel and air in under-feed system move?

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in Energy Engineering by (91.0k points)
In which direction does fuel and air in under-feed system move?

(a) Opposite

(b) Across

(c) Same direction

(d) Counter direction

I have been asked this question by my school principal while I was bunking the class.

This intriguing question originated from Principle of Stoker in section Steam Power Plant of Energy Engineering

1 Answer

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Best answer
Correct choice is (c) Same direction

To elaborate: In under feed type of stokers, the fuel and air move in the same direction. In this stoker air after passing through the holes in the grate comes in contact with the raw coal. As air diffuses through the bed of raw coal, it mixes with the volatile matter generated by the raw coal.

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