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Screw compressors, which are part of positive displacement compressors, can find an increasing use in gas industry and beyond due to their advantages. Maximal parameters of these devices, done by Comoti under GHH-Rand license stop at a maximum flow of 3000 Nm 3 /hour and 26 bara discharge pressure. The needs of potential beneficiaries have imposed the necessity to design and manufacture a new family of screw compressors and oil injection able to develop a discharge pressure of 45 bara with flow rates up to 5000 Nm 3 /hour. This paper presents the design and experimental test phases - for the first screw compressor with discharge of pressure up to 45 bara - CU90 HP. Continue research and development have allowed to this type of screw-compressor - to find a market position, diversifying its size range in the last decade in a manner more explosive, if we refer to other types of compressors.

Case Study regarding the test of the new screw compressor with high delivery pressure - 45 bara - on the test bench (with air)