Where treatment uses energy
Main contributors:
- Pressure drop across filters and dryers, which the compressor must overcome
- Dryer power, including purge air in some desiccant types
- Drains that waste compressed air
- Over-specified treatment applied to all air
Match treatment to need
Not every user needs the same air quality. Treating all air to the highest standard costs energy. Consider treating critical points locally and the rest to a standard that suits them.
Maintain it
Blocked filters raise pressure drop, and failed drains waste air or let water through. Regular element changes and drain checks protect both quality and energy.
Choose dryer type with the whole cost in view
Compare dryer types on energy, maintenance and the dew point the process needs, not only on purchase price.
Starting data
To start, it helps to have:
- Compressor make, model, rated power and controls
- Operating pressure settings and the lowest pressure the processes need
- Operating hours and shift pattern
- Any existing power, flow or pressure records
Frequently asked questions
Can I remove a filter to save pressure drop?
Only if the process does not need it. Check the air quality requirement first.
Is a desiccant dryer always more energy-hungry?
Not always, but some types use purge air, which costs energy. Compare the actual options.
How do I know my filters are due?
Differential pressure indicators and the maintenance schedule show it.
Field guide
Air treatment losses: dryers and filters cost energy too
Treatment equipment protects users, but it also costs energy: pressure drop across dryers and filters forces the compressor to run at higher pressure, and some dryers consume compressed air or electricity of their own.
| Source | Energy effect | What to do |
|---|---|---|
| Filter elements past their change point | Rising pressure drop | Change by differential pressure and interval |
| Over-specified filtration | Pressure drop with no benefit | Match grade to the actual quality need |
| Heatless desiccant dryer purge | Uses a share of the dried air | Dew-point-dependent purge control; consider other dryer types for large flows |
| Refrigerated dryer running at no load | Electricity with no benefit | Cycling dryers, or switch off with compressor |
| Timer drains set too long | Air blown out with condensate | Zero-loss level-sensing drains |
Measure pressure before and after each treatment stage. The total drop from compressor outlet to the user should be small; if it is large, the compressor is being set high to make up for it.
What to send for a quotation
- Compressor make, model and rated power of each machine.
- Electricity tariff and annual running hours.
- Typical pressure at the compressor and at the furthest user.
- Any measurements you already have (power, flow, loaded hours).
Send it through find my part or the spare parts enquiry, or call +91 99590 60718 or +91 92468 88812.