The burner is the true driver of fuel use and costs in a boiler. After about 10 to 15 years of service, linkage joints, cams and other moving parts wear out, and the burner loses its ability to keep tight control on the fuel-air ratio.
We will explore the mechanical devices that can be applied to the burner to control the fuel/air ratio, and how a higher degree of sophistication can result in better overall performance.
Unexpected boiler equipment failure can be dangerous and typically results in lost productivity and revenue. These issues can be avoided or greatly mitigated by properly implementing a preventative maintenance plan.
In the boiler-burner industry, most experts agree that NO comprises about 95% of total NOx, with NO2 making up the remaining 5%. However, studies that are more recent have shown that NO2 can make up an appreciable amount of the total NOx formed, particularly at very low NOx levels.
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Most of the time, boiler systems in operation for 10 years or more are only 60- to 70-percent efficient, which wastes unnecessary energy and money every day. After about 10 to 15 years of service, a typical burner loses its effectiveness.