Life Cycle Cost comparison (LCC) over a period of 5 years.

Standard Compressor

Maintenance 9 %

Investment 14 %

Energy consumption 77 %

Atlas Copco VSD Compressor

Maintenance 9%

Investment 19 %

Energy consumption 50 %

Savings 22 % (on Life Cycle Cost)

35% savings on energy consumption

Atlas Copco VSD - Savings and Payback

The realised savings and resulting payback are strongly dependant on fluctuations in air demand. Surveys show three typical air demand profiles :

Profile 1

Typical 24 hours a day operation with low night shift and high day shift consumption. Steady weekend consumption (leakages).

(64 % of installations).

Profile 2

5 days a week operation, erratic demand fluctuations.

(28 % of installations).

Profile 3

5 days a week operation, constant air demand.

(8 % of installations).

On average, the extra cost of Atlas Copco VSD compared to standard regulation will have a payback period of about one year due to realised energy savings.