In flue gas analysis, what is considered a good percent of CO2?

A good percent of CO2 in flue gas analysis is typically considered to be between 12% and 15%. This range indicates that the combustion process is functioning efficiently, with a sufficient amount of oxygen being used to produce maximum amounts of CO2. Higher levels of CO2 can suggest incomplete combustion or other issues that may impact efficiency and emissions.

In practice, maintaining CO2 levels within this ideal range helps ensure that the combustion is optimized, thus enhancing energy efficiency and minimizing pollutants associated with incomplete combustion, such as carbon monoxide. Lower percentages might indicate excess air in the combustion process, which can lead to wasted fuel, while significantly higher percentages may suggest fuel-rich conditions or problems that could affect safety and performance. Understanding and monitoring these levels are essential for ensuring that heating systems operate reliably and effectively.