Customer: Engineering and fabrication
Reason for audit: Exploring the potential to replace two compressors with one single unit.
Current compressor: 2 off Atlas Copco GA5
Cost of electricity: £0.34 /kWh (average cost)
Results of Audit: Measured potential savings 77.5% = £12,169/year
Simulated compressor: Atlas Copco GA5VSDs (5kW) IE5
ROI on equipment: <12 Months
How does this GA5VSDs compressor save so much energy and money?
Atlas Copco’s state-of-the-art element in a unique vertical configuration with an ultra-premium efficiency (IE5) ferrite assisted synchronous reluctance motor. This new motor technology equals IE5 efficiency without the need of rare earth materials, making it a completely sustainable solution.
The energy (Amps) charts are showing the compressor running condition, running on load, running unloaded (not pumping air), and stopped.
Green is loaded running – efficient use of power.
Orange is unloaded running, not producing air – wasted electricity.
The compressors are a typical fixed speed units, they are both running independently and from the lack of green there is little efficient loaded running, we can see from the volume of off-load running, that there is great potential to save with a variable speed drive replacement.
Weekly Flow chart (l/s)
Survey results
