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Consideration of oil interaction on the operating behaviour of twin-screw compressors using chamber model simulations.

Number: 1399

Author(s) : HESELMANN M., BURCHARDT L., BRÜMMER A.

Summary

Positive displacement compressors, such as the twin-screw compressor, are frequently oil-injected. The oil brings benefits like partially sealed gap connections, the absorption of a considerable amount of compression heat, and the lubrication of the rotors. Even if those basic effects of the oil in the working chambers are well known, predicting them is still a challenge, but needed in terms of optimizing the compressor by simulation. Especially the drawbacks of the injected oil like frictional drag of the oil, or in general hydraulic losses, are not fully understood. Based on high-speed imaging of an oil-injected series twin-screw compressor, this work uses various model approaches for the individual loss mechanisms in order to determine the influence of the oil on the compressor performance. The measurement data of the series compressor - recorded in parallel with the high-speed imaging – are used as a reference. A sensitivity analysis of the performance leads to a weighting of the individual oil-induced loss mechanisms.

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  • Original title: Consideration of oil interaction on the operating behaviour of twin-screw compressors using chamber model simulations.
  • Record ID : 30033613
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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