Sabien supports DSA’s carbon-reduction plan

Sabien, boiler, space heating, dry cycling
Driving Standards Agency is enjoying the energy-saving benefits of Sabien Technology boiler-load optimisers at two major buildings.

Energy savings of 22% over and above those already being achieved by the building-management system have been realised by the Driving Standards Agency by fitting Sabien Technology’s M2G intelligent boiler load optimisers to boilers at Eastgate House in Newcastle upon Tyne. The payback is projected to be abound 1.4 years.

Tom Newholm, DSA’s sustainable-development manager, explains, ‘Having already successfully implemented a number of energy-saving initiatives, we were challenged by Government to achieve a further 10% reduction in carbon emissions.

‘This led us to consider additional interventions, and we had heard from colleagues that the M2G had delivered significant savings for them. We therefore decided to consider using M2G as one of a number of carbon-reduction measures being initiated across the DSA estate.’

Following discussions and site surveys, M2G units were fitted to boiler plant at the DSA's Eastgate House in Newcastle and at a second site in Cardington. These two sites are the highest gas consumers on the DSA estate, accounting for around 17% of total gas consumption. In both cases, the M2Gs were fully integrated with the existing BMS and used to complement the existing control strategies.

Eastgate House has Ideal Concord Super Series 3 modular boilers, made up four 50 kW modular boilers to give a total output of 200 kW. Sabien applied its unique 'master slave' solution to control all the sequenced modules from one M2G, measuring the boiler load profile as a complete system.

Boiler plant at Eastgate House is connected to a single gas meter, so measuring gas consumption before and after installation of the M2G was very straightforward. Following correction with degree-day data, combined with CuSum analysis, the gas savings were shown to be 22%, which equates to a reduction in CO2 emissions of 12 tonnes per annum.

At the Cardington site the gas meter measures consumption for a variety of uses in the building, so that the gas consumption data for the heating could not be isolated for evaluation purposes.

For more information on this story, click here: March 2013, 83
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