The combustion within the boiler burns fuel to create heat energy whichthen produces electrical power. The combustionof fuel isitsreactionwith oxygenavailable in the air. The amount of fuel that can be well burnt is limited by the quantity of oxygen.Once all the fuel is not burnt at all, some of it stays in the boiler and other quantity goes to the atmosphere. Most of the fuelsused in the boiler are hydrocarbons which release hydrogen and carbon as residuals. It causes small efficiency and degradation of the air. It is needed to take the factionofair/fuelto the optimum value to reduce these problems. This paper providesdifferent reviewed algorithms that control the combustion within the boiler and the role of environmental temperature. The authorfound that the separation of the oxygen from the air combined with the preheating both fuel and oxygen taking into account environmental temperature would provide better stoichiometric values, which improve the performance.
Keywords: Boiler, Combustion, Air fuel ratio, Fuel, OxygenControl.