Commercial heating
www.heatingandventilating.net
Optimising steam boiler operation
Carl Knight, managing director of process steam and heat transfer specialist Fulton, looks at boiler sequencing control systems and how these intelligent controllers can optimise steam boiler installations to ensure energy efficient operation and improve boiler longevity
N
umerous processing facilities operate multiple steam boilers to meet the demands of their on-site processing equipment.
However, if the steam boilers in these facilities are not optimised for efficiency, then the potential for any energy savings is not itself being fully optimised.
The use of an intelligent sequencing system for steam boiler installations provides redundancy, builds reliability and offers significant energy
savings by automating start-up and shut-down procedures; controlling and optimising main steam header pressure or temperature; ensuring steam supply is controlled precisely for the required process; and balancing the load distribution across the boilers, all of which reduces extensive losses from repeated start/stop cycling of burners as much as is feasibly possible.
Steam boiler sequencing should be about more
than simple on/off or start-up control. An intelligent sequencing system should also consider steam system load conditions and match this to the most efficient combination of boiler output according to process requirements.
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