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The responsible use of resources and the saving of energy plays an important role for the profitability of a company today and will become increasingly indispensable in the future. This makes it all the more important to identify processes within the company in which potential energy savings can be achieved with relatively little effort. For example, in the generation of compressed air.
The life cycle costs of a compressor are generally divided into three groups, the capital investment or purchase price, maintenance and energy consumption. Energy costs have the largest share of the three groups, followed by acquisition costs. The maintenance costs are the lowest.
Compressed air audits are a good way to quickly identify the actual costs. But it is important to understand how each of these factors affects your bottom line and what steps can be taken to minimize overall life cycle costs.
Each electric motor has an efficiency class that determines the percentage of electrical input power that the motor uses to drive the compressor. Although there is a wide range of efficiency classes, a good gerneral rule is: the older and the smaller the compressor motor is, the less efficient it is. For example, a 75 kW premium efficiency motor of class IE3 typically has a minimum motor efficiency of about 95%. To calculate this for your compressor, you need the motor efficiency in the motor manufacturer's data sheet and the motor power from the motor nameplate.