Monitoring Environmental Performance
Energy Improvement: Key Areas
- Air should be taken in from outside the building as it is colder and thus the
compressor will work more efficiently. The inlet should be protected from extreme
temperature and weather conditions, on a north wall. The ducting from the air intake
and the compressor should be as short and straight as possible, and the diameter as
large as possible.
- Ring mains are the best and most efficient systems, and designed for a maximum
pressure drop of 0.1 to 0.2 bar at points of use at maximum demand. Air receivers can
be installed for short periods of high demand.
- The system should be zoned using isolation valves (electronically controlled
isolation valves are preferable to manually operated valves).
- Compressors should be sized in order for capacity to match demand for compressed
- Different sizes of compressors should be used for installations with multiple
- Make regular checks on compressed air use.
- Train shop floor personnel in leak detection.
- Fix all leaks promptly.
- Investigate leaks during quiet periods / shutdown.
- Tag all leaks.
- Isolate machinery that is leak prone.
- Get rid of redundant pipework.
- Heat can be recovered by ducting the air outlet into the factory during winter
and outside in summer.