Plant & Works Engineering
How to cut energy consumption
Published:  02 February, 2023

FPS AIR COMPRESSORS says it can provide a number of tips and initiatives to reduce the energy consumed by compressed air systems. In particular, the company offers the new NOBEL PM series of oil-injected rotary screw compressors, which feature IE4 permanent magnet motors, variable speed drives and an extended airflow range for a high level of energy efficiency and quiet operation.

The company says this industry-leading performance helps to counter the current trend of spiralling energy costs, which look likely to remain high for the foreseeable future. Compared with the operating costs of a standard compressor. As an example, a user operating a 37 kW Nobel DVPM air compressor could enjoy savings of up to £25,000 a year or more.

Compressed air usage represents a significant proportion of electricity costs at manufacturing plants, food production facilities, machine shops, packaging plants, garages, body shops and woodyards – essentially any facility using compressed air. FPS says a big part of the solution is to get savvy about specifying the optimal technology, notably the compressor. The energy costs linked to an air compressor’s operation during its service life represent more than 80% of total lifecycle costs.

There are three principal compressor metrics to consider: specific energy; greater FAD (free air delivery) performance; and a wider operating range to suit varying demand.

The specific energy value reveals how much power (kW) is used to generate a specific volume of compressed air (1m³). Users unfortunately often overlook this highly accurate measure of an air compressor’s energy efficiency. However, NOBEL PM series models from Power System deliver a 3-8% better specific energy performance in comparison with competitor alternatives.

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