Recent Experience With Large Liquid Injected Rotary Screw Process Gas Compressors.
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Advances in manufacturing techniques and design enhancements for such components as shaft seals have made it possible for liquid flooded rotary screw compressors to achieve availability, reliability, and overall performance thought impossible 10 years ago. With some machines operating continuously for over 30000 hr, and installed driving power levels exceeding 7000 hp per compressor train, process engineers and machinery specialists may have to reassess older notions of the application range for this close cousin of the modem turbocompressor. Specific details on construction features and design parameters are given for large rotary screw process machines which can clearly outperform turbocompressors and reciprocating process compressors in selected gas compression services. Two application examples are given, together with shortcut estimating procedures on the performance, initial installed cost, probable maintenance cost, and projected long term operating cost of large state-of-the-art rotary screw machines.
Bloch, Heinz P.; Noack, Pierre W. (1991). Recent Experience With Large Liquid Injected Rotary Screw Process Gas Compressors.. Texas A&M University. Turbomachinery Laboratories. Available electronically from