NHS
The Down & Lisburn Health and Social Services Trust is part of the NHS. It has a clearly defined energy and environmental policy with two main objectives:
To reduce overheads in order to improve quality patient care through more effective management of funds.
To reduce harmful CO2 emissions in line with the government's commitment to the Kyoto Protocol Agreement. They also wanted to set an example to the private sector, making them more aware about their responsibilities.
The Trust had a minimum requirement for a boiler control system to have intelligence and understandable logic.
The following tables illustrate the before and after consumption rates after weather correction at various locations run by the trust.
Column 1: consumption for the year 2000 (prior to M2G System control)
Column 2: consumption weather corrected for the year 2002 (all boilers controlled by M2G System)
Column 3: the percentage reduction in fuel
Column 4: the payback on investment based on December 2003 energy prices
Column 5: the reduction in CO2 tonnes emissions due to M2G System control
Year 2000mWh | Year 2002mWh | % Saving | Payback in Years | CO2 Tonnes reduced | |
Laurelhill House | 557.30 | 412.99 | 25.9% | 0.99 | 27.4 |
Lindsay House | 182.5 | 145.59 | 20.2% | 3.86** | 7.0 |
Lisburn ATC | 613.50 | 446.10 | 27.3% | 0.85 | 31.8 |
CLASS D OIL | Year 2000 Litres | Year 2002 Litres | % Saving | Payback in Years | CO2 Tonnes reduced |
Finniston House | 197,621 | 162,788 | 17.7% | 0.30 | 94.1 |
Hillsborough Health Centre | 13,005 | 8,472 | 34.9% | 2.14 | 12.2 |
Room temperature in all the buildings was maintained and in some cases was slightly higher during the M2G System control.
The graph below illustrates boiler frequency firing per hour at varying ambient temperatures over a four month period. This confirms that the M2G System reduces the number of fires per hour as the load decreases.
