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Companies that require a large supply of compressed air use our tried and tested centrifugal technology. At the heart of each machine is an individually designed impeller. That's right: each machine is optimized for its power range. Each pressure variant has its own optimized impeller. These impellers are built to last, which makes the centrifugal compressor a very reliable unit.
A very popular answer to this question is to select screw technology for best energy efficiency at lower flows and centrifugal technology for the higher flow demands. To advise the customer on the best technology fit, we have to look at the customer's application.
It all starts from our customer's need. For sure, the energy efficiency will play a role in the final selection, yet other parameters like the compressed air demand profile will have to be taken into account as well. Applications that show a fluctuating air demand will benefit more from the wide turndown capabilities of a variable speed driven oil-free screw, while centrifugal units typically would be a better fit on more steady flow demand patterns.
In most cases, the optimum selection is a combination of the 2: An oil-free centrifugal unit taking care of the base load combined with a variable speed driven oil-free screw unit to handle the fluctuating top load. This combo, together with our heat-of-compression dryers, forms a winning team, unique in the compressed air industry, providing ourselves and our customers the guarantee for success.
The working principle of a centrifugal compressor
By adding kinetic energy to air particles and abruptly slowing them down, you build up pressure. By doing this in several stages, you can go up to 13 bar in lower compression machinery, and as high as 205 bar in 4-8 stage high compression turbomachinery, also known as multistage centrifugal compressors.
The core of the centrifugal compressor consists of 3 elements;
Impeller: The air flow enters the impeller, where the rotating blades increase the kinetic energy of the air
Diffuser: The diffuser manipulates the air flow by gradually slowing down the air velocity and converting the kinetic energy into pressure.
Volute: The diffuser discharges in the collector – shaped as a snail shell- also known as the volute. In the volute, the air flow from the diffuser is collected and distributed to an outlet pipe.
Within the centrifugal compressors category, 3 main configurations are available:
In sensitive industry applications, reliable supply of oil-free air at lower pressures from 300 mbra(g) to 1.5 bar (g) is needed.
Oil-free air centrifugal blowers need to meet the rigorous standards expected in :
Variety of centrifugal blower solutions
There’s more than one configuration we can provide to meet the requirement of your application. No two projects are the same, and we realize that the initial investment cost or the total cost of ownership can also be a deciding factor. Our multistage centrifugal blowers are providing a simple, reliable solution that require a lower initial investment. Our highly efficient high speed centrifugal blowers ensure the lowest total cost of ownership.