Question

The amount of fuel burned depends on ____________

(a) Design of burner

(b) Depends on air inlet and exhaust system

(c) Depends on bed movement velocity

(d) Depends on amount of supply of combustion supportive air

The question was posed to me during an interview.

My doubt stems from Fuel Burning topic in chapter Steam Power Plant of Energy Engineering

Answer 1

Right answer is (c) Depends on bed movement velocity

The explanation is: The amount of fuel burned depends on the amount of fuel burned and on the bed velocity movement. The grate area is the total area of grate (a frame of iron bars). The large the grate area, the more fuel can be burned per hour.