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Of the total energy supplied to a compressor, as little as 8 to 10 % may be converted into useful energy that can do work at the point of use. Minimising waste of compressed air is vital, as the right approach can save over 30% of the energy used.
On our website you will find a range of advice to help make your compressed air system more efficient – from simple housekeeping tips to more detailed implementation advice. You can also download our Compressed air technology overview (CTV050) for more in depth advice on the main compressed air energy saving opportunities for businesses.Alternatively, why not listen to our training webinar delivered by industry expert, Eric Harding. In it, he explains how you can make significant cost savings by improving the efficiency of your compressed air systems and processes.We also offer the following specific and practical 'how to' compressed air guides:How to recover heat from a compressed air system (CTL166)How to apply variable speed drives to air compressors (CTL167)How to implement leak detection techniques in compressed air (CTL168)Maintenance checklist – Compressed air (CTL169)How to purchase new compressed air equipment (CTL170)
1. Reduce the pressureCompressed air is often generated at the compressor’s maximum pressure (often 7 bar, 100 psi). Reducing pressure by 10% can lead to 5% savings in energy. Make small, incremental reductions, checking that operations are not affected.
2. Test for and fix leaks Even a tiny leak (just 3mm) could cost you more than £700 a year in wasted energy, so carry out a ‘no-load’ test to check for leaks. We explain how in this short video:
If you do have leaks, locate them by listening for them out of hours or using ultrasonic leak detection equipment. Ultrasonic equipment (shown in the video below) is often the most convenient way of checking for leaks during production. This equipment can be hired or specialists used to carry out a survey.How to implement leak detection techniques in compressed air (CTL168)
3. Check that compressed air is really required Compressed air is expensive to run, and yet cheaper options exist for certain jobs. Educate your staff not to allow compressed air to vent to atmosphere (e.g. cleaning benches). A usage policy that suggests safe and easy alternatives to compressed air (as well as detailing acceptable uses for it) will help your staff save energy and reduce carbon.