LED has proven its payback credentials – so where’s the next big energy efficiency opportunity?
In this article, Stef Lievens – Business Line Manager for Industrial Air at Atlas Copco Compressors UK - argues that compressed air represents the next big viable opportunity for UK manufacturers to save energy and reduce carbon emissions.
Reading time: 6 minutes
Stef Lievens, Business Line Manager - Atlas Copco Compressors
Anecdotal evidence has shown that when LED lighting is installed along with other energy efficiency measures there is significant potential to reduce carbon emissions. This is an important point to think about when companies look at the bigger picture and consider their wider impact on the environment, as well as how this impacts on their brand purpose and reputation with customers. However, with many facilities having already adopted LED lighting, is it time for companies to begin looking elsewhere for other opportunities to become more energy efficient?
The answer is undoubtedly yes, and a technology that presents great potential for both immediate energy efficiency improvements and long-term total cost of ownership savings is compressed air. There’s no argument that compressed air is a mature technology, with stationary compressors having been successfully utilised in various parts of UK industry for several decades. However, what is widely overlooked by the public, and some professionals working in senior positions at major UK manufacturing companies, is the essential, yet hidden, role that compressed air plays in everyday life. From pneumatic conveying lines in factories, to powering the moving exhibits in museums and theme parks, compressed air is literally used everywhere.
But LED and air compressors aren’t the same, right? That’s undeniable, but their potential impact on production sites and wider industry is comparable in many ways. With conservative analyses estimating it accounts for 10 per cent of all energy used in global industry, there’s no doubt compressed air should be high on the agenda of any enterprise seeking to reduce its carbon footprint. Thankfully, there have been significant advances in recent years that can enable companies to drastically improve both production and energy efficiency.
What is also worth considering are the benefits of IoT-enabled remote monitoring systems, such as SmartLink, which can be used to intelligently predict future compressed air usage patterns and make recommendations on how to further improve system optimisation. Furthermore, with about 90 per cent of the electricity you put into a compressor capable of being re-used elsewhere through the application of energy recovery systems, why not be smart and convert it into heating for your water supply or warehouse?
While it can be argued that adopting LED lighting is comparatively quicker than replacing a stationary compressor, it’s worth noting that assessing a compressed air system is non-intrusive and the time it takes to identify savings is relatively short. For instance, the recommendation is to undertake a data-logging exercise which, apart from approx. 15 minutes for set-up, has no impact on production. Most importantly, it results in a detailed energy report that, among other things, can flag up how much energy could be being lost through leaks in compressed air pipework. To highlight this, even a tiny leak of just 3mm could cost you more than £700 a year in wasted energy according to The Carbon Trust.
In addition, what compressed air users may not be aware of is how many local authorities also run their own schemes offering grants to encourage the adoption of energy efficient industrial machinery. For instance, there are these two such initiatives in Derbyshire and Worcestershire, which have been running for some time now and have benefited companies in their respective areas.
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About the author
Stef Lievens is a Belgian citizen, with a Master of Science in Mechanical Engineering and Business Administration from the University of Leuven, Belgium. He and his sales team have a customer-centric focus on offering reliable and cost-effective compressed air and industrial gas solutions that have a short payback. They seek to raise awareness of complementary technologies that offer improved productivity; such as quality air ancillaries, energy recovery systems, remote monitoring programs and real-time control and management software.