same value
higher value
lower value
lower/higher depending on steam flow
high burning rate is possible
heat release can be easily controlled
fuel burns economically
it is the best technique for burning high ash content fuel having low fusion ash
temperature, time, and turbulence
total air, true fuel, and turbulence
thorough mixing, total air, and temperature
total air, time, and temperature
to provide proper conditions for continuous complete combustion
mix fuel with air and ignite
separate ash from coal
maintain heat supply to prepare and ignite the incoming fuel
it has heating value
it helps in electrostatic precipitation of ash in flue-gases
it leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
it erodes furnace walls