Design of high efficiency centrifugal compressors stages

The modern trend in compressor industry is an extension of the use of multi-shaft centrifugal compressors.Multi-shaft compressors have a number of advantages over single-shaft.The design of such compressors gives opportunity to use an axial inlet for all stages and select the optimum rotational speed for each Navy Tumbler pair of impellers, which,

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Determination of the basic concepts of migration processes in Ukraine from the perspective of modern realities

The article presents the results of the classification gradation of forced migration from the conflict zone in the Donbas (previously-the ATO zone, then-the zone of OOS).Forced migration is migration flows caused by threats to life and well-being due to natural, man-made or Spot serum political (for example, wars and ethnic conflicts) causes.The ar

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