By reviewing your industrial burner controls strategy it is possible to achieve significant energy savings and substantially reduce outgoings. Our industrial burner control experts have taken a deeper look at five ways that reviewing your electronic burner controls can reduce your energy bills.
Linkageless burners have no backlash. On a frequently modulating burner this can commonly result in energy savings of up to 1%!
On an electronic burner control, the low fire point can be set lower than the ignition point, meaning that the turn-down ratio can be increased. In addition to this burner on/off cycles and their associated cold air purges can also be reduced, resulting in energy savings.
While savings from reduced on/off cycles will vary with boiler utilisation, savings of up to 5% have been reported (based on a burner with an on/off frequency of approximately once every 10 minutes).
A second PID control
Some electronic fuel:air ratio controls have two internal PID modulation circuits. If a plant does not run continuously, then this second PID control’s set point can be used to switch the boiler to a lower steam pressure or hot water temperature during periods of reduced activity.
Using a second boiler set point provides energy savings of approximately 10% pa.
Fan speed control
Combustion efficiency can be improved at low fire if the fan speed is reduced. Fan speed control is an easy to add option on some electronic burner controls. By adding fan speed control, burner turn-down can be increased without compromising efficiency, and additional fuel savings can be achieved.
The benefits of variable speed control do not end here: When an inverter is used to slow the speed of an ac electric motor, electrical energy savings result. For example, when a fan motor is slowed to 25Hz i.e. to half speed, an 80% electrical energy saving is achieved.
Oxygen trim automatically and continuously compensates for the variables that affect efficient combustion. When oxygen trim is included the oxygen levels can be set at their optimum level. In addition, if the trim control is adaptive then it will contribute energy savings of approximately 2% to 3%.
If you would like to discuss how our electronic burner controls could help your business please do get in touch.