November 2020

Energy, the Environment & Water Focus on: Boilers, Burners & Controls the air to match, but combustion efficiency can be improved at low fire, if the fan speed is reduced. Fan speed control is a straightforward add- on option on some electronic burner controls. By including fan speed control, burner turn- down can be increased without conceding efficiency, and additional fuel savings can be realised. The benefits of variable speed control continue, because when an inverter is used to slow the speed of an AC electric motor for example, electrical energy savings result. When a fan motor is slowed to 25Hz – half speed – an 80% electrical energy saving is achieved. Oxygen trim Oxygen trim is a closed loop system available as an option on some electronic fuel:air ratio controls. Oxygen trim refers to a system of monitors used to maintain excess air at the preferred level in a combustion device. When oxygen trim is included, ETC says 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%. Boiler sequencing and communication software Modern electronic fuel:air ratio controls incorporate boiler sequencing and communications software. A boiler sequencing system says ETC helps to guarantee that boilers are fired in a controlled manner, providing cost savings by preventing individual boilers from over firing and cycling on and off unnecessarily. Communications software offers vastly improved information gathering and boiler operation data. Next steps There has never been a better time to review your industrial burner control strategy. Energy savings due to improved efficiency can be achieved, allowing businesses to reduce outgoings and save money in these uncertain times. For further information please visit: www.energytechnologycontrol.com Plant Master The ETC6075 Touchscreen HMI has a ‘Plant Master’ mode which uses the Ethernet to connect up to 10 ETC6000 series controllers to the user interface, making it easier than ever before to analyse numerous boiler results. The Plant Master operating mode allows engineers to view all of the boilers as one all-encompassing system providing valuable input into the steam generation process. By viewing the set-up as a whole, it is possible to draw wider conclusions on where there is room for improvement. Join us on Facebook Plant &Works Engineering Follow us on LinkedIn Plant &Works Engineering Followus on Twitter @PWEmagazine1 @PlantAssetMgt For the latest news visit the PWE website www.pwemag.co.uk Find out the latest on Plant &Asset Management 2022 www.maintenanceuk-expo.com PWE Plant & Works Engineering Plant & Asset Management 2022