Broag biomass boiler reduces carbon emissions from Suffolk college

Replacing oil-fired boilers in a Suffolk college with this Broag biomass boiler is reducing carbon emissions by 120 t a year.
A 450 kW biomass boiler from Broag has replaced three elderly oil-fired boilers at Stradbroke Business & Enterprise College in Suffolk and is reducing carbon emissions by around 120 t a year. The school has some 370 pupils. The boiler was specified by Suffolk County Council and installed by the Ipswich branch of Elyo Services. The opportunity was taken to create three separate heating zones in the college and upgrade the controls. The boiler is connected to a low-loss header as if it were a conventional pressure-jet boiler. The fully modulating combustion down to 30% of full output of the boiler means there is no need to have a buffer vessel or thermal store. Features of this boiler include the ability to burn wood chips or pellets, an automatic feed system, automatic ignition, automatic ash removal, automatic daily cleaning of the heat exchanger and an efficiency of 91 to 93%. The college now also has nine solar-thermal panels connector to the second coils of two HWS calorifiers, complemented by a Broag Quinta 65 kW boiler when there is not enough solar energy.
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