keep the burner tips cool

aid in proper combustion

cause sputtering, possibly extinguish¬ing flame

clean the nozzles

prevent the bulging of flat surfaces

avoid explosion in furnace

prevent leakage of hot flue gases

support furnace freely from top

heating the oil in the settling tanks

cooling the oil in the settling tanks

burning the oil

suspension

lowest temperature at which oil will flow under set condition

storage temperature

temperature at which fuel is pumped through burners

temperature at which oil is transported

provide air around burners for obtaining optimum combustion

transport and dry the coal

convert CO (formed in lower zone of furnace) into C02 at higher zone

air delivered by induced draft fan