Through investigation

it is obtained that the actual oil-spraying quantity of an ignition nozzle was far greater than the theoritical quantity corresponding with the air-supplying quantity of the ignition burner. The difference between them is often accounting for more than 50% of the total oil consumption for ignition. The experiments in laboratory and the combustion phenomena in actual boilers show that the most part in the said difference to be imperfect combustion loss. Hence

a huge oil-saving potential is determined by doing well the work of matching the air quantity with the oil quantity.