BT, one of the world’s leading providers of communications solutions and services, has begun the rollout of Sabien’s M2G boiler load optimiser following extensive pilots. M2G will be installed, in a rolling program, to all suitable buildings within BT’s estate of 7,500 buildings.
Jeff Nash, Head of Sustainable Estates, BT noted; “BT has a clear focus to reduce its energy consumption and hence its CO2 emissions. It has plans to reduce its emissions by 80% by 2016 in the UK. To help it achieve this target it requires innovative solutions from suppliers to help save energy and Sabien delivered on our expectations and will have a continuing role to play in supporting BT in these plans.
“M2G’s ability to integrate with existing Building Management Systems and the vast range of single and multiple boiler applications regardless of size and age within the BT estate is a significant benefit,” he added.
Sabien worked closely with Monteray, BT’s FM provider, during the rollout, providing end to end project management and installation across the UK.
How M2G delivers CO2 savings
The M2G is an intelligent boiler load optimiser which improves the efficiency of each individual boiler regardless of age and size by removing ‘dry cycling’, an inherent problem found in over 80% of commercial boilers.
M2G is retro-fitted to each boiler and monitors the temperature of the water in the flow and return every 10 seconds, enabling the M2G to analyse the temperature losses from the boiler. The M2G calculates whether the temperature loss is caused by a genuine heating demand or from standing losses i.e. temperature losses through the boiler casing and flue. When the boiler tries to fire as a consequence of the standing losses the M2G will prevent the boiler from firing resulting in reduced energy consumption.
M2G’s ability to remove dry cycling within each boiler results in no changes to the boiler’s designed set points or impacts to ambient room temperatures. This approach eradicates previous control methods of using fixed time delays or predictive firing patterns.
M2G complements and integrates with existing building controls by identifying any changes to the boilers set point from building management systems or additional controls such as weather compensation.
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