 | Housekeeping |
To do list:
1. Reduce the pressure
Compressed 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. 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). If possible, don’t use it for drying or ventilation. 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.
Unless there is a specific requirement (e.g. an explosion risk) do not use air driven motors for providing motion. Where possible use an electrically powered motor instead.
See the video below for more advice on alternatives to compressed air:
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3. See if compressed air could be delivered more efficiently
If compressed air is appropriate for the job, could it be delivered more efficiently? For example, many blow guns are simply open-ended pipes: fitting a venturi-type nozzle can use 30% less compressed air, and, by making the operation much quieter, improve the working environment.
4. Switch off compressors when not in use
An idling compressor uses around 40% of its full load. Where appropriate, turn compressors off when they’re not being used (for example during tea breaks, and certainly overnight), to save energy.
5. Don’t over-treat air
Treating air to remove dirt, water and oil is necessary but uses lots of energy. Treat the application rather than the whole system. For more information on air treatment systems, refer to page 13 of the Compressed air technology overview.
Download or order copies of our employee awareness poster:
Compressed air - Employee awareness poster