Burners with controls are used to provide heat for hot water, steam and thermal oil boilers, heaters and processes. They are widely used in industry and commerce and they are designed to create and burn air and fuel mixtures in a safe, efficient and controlled manner, and to direct the heat released through combustion into a pressurised vessel (or other combustion chamber).
Condensing Economisers are a type of heat exchanger that has been designed to improve boiler net thermal efficiency by recovering both sensible and latent heat from boiler flue gases. This heat is normally used to preheat the boiler’s feedwater and to supply low grade heating requirements.
Heat recovery from flash steam and boiler blowdown condensate covers recover heat from steam condensate and / or water from boiler blowdown, by means of heat exchangers and/or flash steam recovery vessels. Significant amounts of heat can be recovered from the water extracted during boiler blowdown and from steam condensate. However this water can contain significant levels of contaminants that reduce the efficiency of the heat recovery process.
Non-condensing economisers are a type of heat exchanger that enables some of the sensible heat in boiler flue gases to be recovered. This heat is normally used to preheat the boiler’s feedwater.
Burners are used to provide heat for hot water, steam and thermal oil boilers, heaters and processes. They are widely used in industry and commerce. A range of retrofit burner control systems is available, and these offer different levels of precision and repeatability of control. The Energy Technology List (ETL) aims to encourage the purchase of microprocessor- based products that are able to accurately control combustion and maintain burner efficiency over a specified turn down range.
As installers assemble retrofit burner control systems on site from standard components from different manufacturers, which reflect the specific requirements of the installation, only the retrofit burner control units are listed on the ETL.