Compressed Air?


"Most compressed air applications have varying demand based on the process for which the compressed air is being used. There are many choices of compressor technology and types of controls that can be used for variable demands. Some examples are rotary screw compressors with inlet valve control: variable speed drives: load/unload control; or centrifugal compressors with variable inlet guide vanes. However, in many cases, the efficiency of the overall compression process can be reduced significantly during lower flow demands, leading to more power per unit of air flow being delivered. It is very important to evaluate different available options and see how a plant can run most efficiently.

Centrifugal compressors can be a very good choice for certain applications where the variable demand can be met within the turndown range of centrifugal compressors. Centrifugal compressors are well known for their reliability, efficiency and air quality. Let us now understand the centrifugal technology and its use in variable demand with a varying load application."

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