Polestar, Europe’s largest independent printing company, is predicted to save more than £10,000 off the annual energy bill at its Sheffield printing plant by adopting a revolutionary new VSD-driven vacuum pump from Atlas Copco.
When Polestar was confronted with the need to make major repairs to one of its three existing fixed speed vacuum pumps at its £100 million purpose-built Sheffield Gravure plant − a production site that has received environmental awards for its green credentials − it made sense to re-assess their combined operation to establish the potential savings that could be made by installing a more energy-efficient replacement. Recognising the clear synergies between compressed air and vacuum in the field of air movement, it was a logical move by Polestar Sheffield to seek the recommendations of Halifax-based Pennine Pneumatic Services (PPS) for the optimum solution to their vacuum needs. Atlas Copco Compressors’ premier distributor in Yorkshire, PPS has been a long term supplier of compressed air systems, both fixed speed and VSD-driven, pipework and maintenance services to the company. As a result, a GHS900 VSD+, one of Atlas Copco's new generation of intelligent, oil-sealed, plug-and-play rotary screw vacuum pumps, was installed on a trial basis to show how it could deliver peak performance at the required operating pressure, and help achieve substantial energy savings. Of the three existing units, the two smaller fixed speed vacuum pumps previously used by Polestar Sheffield were running at approximately 20kW an hour (one rated at 11 kW and the other at 9.7kW combined). The single GHS VSD+ vacuum pump that replaced them is a 15kW unit, which operates at approximately 20 per cent load, equating to just 4kW. Based on an operation of 8,000 hours per annum, the estimated savings are expected to exceed £10,000 (16KW x £0.08 x 8,000 hours).
Ensuring reliability and harnessing advanced technology are key to Polestar Sheffield's success, which has led to the site winning the prestigious ERA (European Rotogravure Association) printing award. While the gravure process is traditionally employed for long print runs, the latest engraving technology allows for short-run work with significant paper usage savings. Polestar’s elite printing site produces around 2.5 million high-quality catalogues, magazines, brochures and supplements every 24 hours. These include many of the top consumer magazines including weekly TV listing titles and national newspaper supplements.
A vacuum system plays an essential role within the transfer of work from the presses to the print finishing and bindery operations. In addition to its modern rotary gravure printing facilities, Polestar’s £34 million investment has included a purpose-built web offset 96- and 64-page size press installation together with multiple stitching stations.
“ We pride ourselves on using the latest technology and continually look at ways to save energy which is why it made absolute sense to accept PPS’ recommendation to trial a variable speed drive rotary screw vacuum pump. The Atlas Copco GSH900VSD+ has proved a resounding success and the projections are for major savings on our energy bills over the course of a year. ”
The revolutionary GHS 350-900VSD+ rotary screw vacuum pump range represents a quantum leap forward in rough vacuum technology that is based on Atlas Copco’s proven, advanced screw compressor principles. The GHS VSD+ breakthrough range offers compelling benefits to manufacturers. Benefits include average energy savings of 50 per cent compared to conventional oil-sealed and dry vane pumps, as well as best-in-class noise levels and oil retention properties. Primarily, its VSD technology enables users to precisely adapt their vacuum generation requirements to match the demands of their production processes.
With approximately three quarters of all UK companies that employ rough vacuum requiring oil injected pumps − which are traditionally fixed speed − there is massive potential for energy savings derived from the new VSD technology to be gained across many sectors of UK manufacturing industry.
Get the latest news and stories from Atlas Copco straight to your inbox
Subscribe to our monthly Fresh Air newsletter
Pennine Pneumatic Services (PPS) was established in 1991 and has grown in size and stature to become one of the leading distributors of compressed air solutions throughout Yorkshire and the North of England. An Atlas Copco premier distributor, PPS won the Atlas Copco Compressors’ Distributor of the Year Award 2013.
Atlas Copco Compressors is the GB sales and service operation of the Atlas Copco Group providing oil-free and oil-injected stationary air compressors, gas and process compressors, vacuum pumps, turbo expanders, nitrogen generators, air treatment equipment (such as compressed air dryers, coolers, and filters) air management systems, and custom designed engineered packages.
Atlas Copco Compressors’ sales and distribution network means that specialist compressed air advice and service is always within easy reach. A team of over 80 service engineers operates across the country, to ensure maximum running efficiency and minimum downtime at its customers' sites.
In the United Kingdom, Atlas Copco also handles the sales and marketing of construction and mining equipment, portable compressors and electric power generators, industrial power tools and assembly systems – all backed up by a nationwide sales, distribution, service and maintenance network.
Atlas Copco is a world-leading provider of sustainable productivity solutions. The Group serves customers with innovative compressors, vacuum solutions and air treatment systems, construction and mining equipment, power tools and assembly systems. Atlas Copco develops products and services focused on productivity, energy efficiency, safety and ergonomics. The company was founded in 1873, is based in Stockholm, Sweden, and has a global reach spanning more than 180 countries. In 2015, Atlas Copco had revenues of BSEK 102 (BEUR 11) and more than 43,000 employees. Learn more at www.atlascopco.co.uk/compressorsuk.