Proper water maintenance is essential to keeping boiler rooms both safe and efficient. Every 1/8" of calcium and other debris created by steam boilers translates to a 3-5% loss in heat transfer. In addition, the build-up of debris could accumulate to a point where the boiler could have a failure to the tubes or tube sheets.
By only bringing in the boilers needed to maintain the load at any given time, the lead lag system reduces the total amount of energy exhausted and increases overall efficiency.
These precise adjustments significantly reduce the amount of fuel needed to fire the boiler over time, resulting in energy savings as well as increased operating efficiency.
For motors that operate above 7-10 hp, a variable frequency drive (VFD) can help achieve significant energy savings.
This computer-based system automatically positions air dampers and fuel valves in the optimal location, resulting in tighter control of both air and fuel. When these tolerances are kept closely linked, boiler system efficiency can increase by 1-1.5%.
Economizers can increase boiler system efficiency from 2-9%, depending on what the water is used for and the temperature of the incoming water.
Newer-design firetube boilers that feature XID tubes combined with economizers are recommended for process and hospitals where steam is used.