Combustion Analysis: Relevant Parameters

How do relevant combustion parameters like O2, CO, CO2, temperature, and smoke (soot) relate to efficiency?

If it were possible to have perfect combustion, CO2 would be maximised and O2 would be at, or close to, zero in the flue gas stream. Since perfect combustion is not practically possible due, in part, to incomplete mixing of the fuel and air, most combustion equipment is set up to have a small percentage of excess oxygen present. The lower the temperature for a given O2 or CO2 value the higher is the combustion efficiency. This is because less heat is carried up the stack by the combustion gases.

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