UNIVERSITY OF BRISTOL - Autoflame
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UNIVERSITY OF BRISTOL

CASE STUDIES: UNIVERSITY OF BRISTOL

Autoflame were invited by the University of Bristol to carry out a complimentary energy efficiency survey for several of the boiler rooms across their estate. It was quickly identified that one of the biggest problems within the boiler rooms was a lack of control integration between the boilers and CHP. The boilers were often coming online to help the CHP with the heating load demand but when demand lowered the CHP would go offline before the boilers affecting the overall plant efficiency.

 

To overcome this issue the Autoflame Mini Mk7 MM controller was specified by the University as it has built into it Modbus communication protocols which would allow the controller to communicate to the Universities Trend system that the CHP’s were already connected to. The Modbus integration also allows the Trend system to disable and enable the boilers as well as monitor each boilers status.

 

During the survey it was noted that whilst upgrading the burner controls to the Autoflame Mini Mk7 MM controller would deliver fuel savings by fully modulating the burner, further savings could be achieved by fitting high efficiency Limpsfield burners. Limpsfield burners are guaranteed to run at 3% O2 with zero CO throughout the entire firing range with a high turndown ratio. High levels of O2 significantly reduce the efficiency of boilers by reducing flame temperatures and increasing the speed at which hot gases pass through the boiler.

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