This Aviation Company is amongst the world’s leading producers of large and small jet engines for military and commercial aircraft. In addition they supply aircraft derived engines for marine applications and provide aviation services.
The site in South Wales faced an annual energy bill of £1.2m and RUMM was asked to investigate energy usage across the site in order to understand the total consumption picture and identify those areas where improvements could be made.
RUMM split the site into 5 areas and installed a sub-metering aM&T system comprising of 32 meters. Data analysis identified that the base load of electricity was around 1MW, with several area highlighted as targets for energy reduction measures.
Initiatives such as the installation of variable speed drives in the site cleaning bay extraction system, meant that the speed of the motors providing air extraction was able to be optimised in line with the process requirements, resulting in a 28% decrease in energy consumption.
A new lighting and control scheme which worked in accordance with daylight and occupancy saved a further 6%. Improved temperature control of a large chilling circuit and the addition of a timer control system also added a further 24% to the savings.
The air compressor system was also identified as an area where energy was being wasted and advanced fault finding discovered air leaks. Once these were fixed, pressure was reduced and a smaller fixed lead
compressor was added, the combined measure of which saved an additional 30%.
Energy savings have increased year on year since the installation of RUMM’s energy management solution, rising from 5% in 2007,to 12% in 2008 and 21% in 2009.
This reduction equates to a total of £500,000 savings to date with a reduction of 2,685teC02 emissions. The savings made to date have also enabled the site to install additional metering with the view to obtaining similar reductions in gas usage and expenditure.
WHY IT WORKED
Splitting the site into 5 key areas and then installing a sub-metering system allowed the RUMM and on site energy teams to clearly identify those areas where energy consumption was highest.
This targeted approach meant energy reduction measures could be very specific and easily benchmarked to ascertain their success.
“The service that RUMM provides is not just a contract, they also form personal relationships with the client.
It’s very much a working partnership, which sometimes goes above and beyond the contract”
— Maintenance Leader