In which direction does fuel and air in under-feed system move?(a) Opposite(b) Across(c) Same direction(d) Counter directionI 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

In which direction does fuel and air in under-feed system move?(a) Opp

1.	In which direction does fuel and air in under-feed system move?(a) Opposite(b) Across(c) Same direction(d) Counter directionI 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
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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