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Summary
The internal pressure characteristics of an oil-injected twin-screw refrigeration compressor was studied using a full 3D CFX model, and the hexahedral moveable meshes of the twin-screw domain were generated by the professional mesh tool SCORG. The gas pressure throughout the whole working process was investigated to disclose its distribution feature. The working pressure at different locations, such as the inner surface of the screw rotor housing, the oil injection paths, the male screw groove, the internal suction and discharge flowing paths, were all captured and analyzed. The simulated pressure inside the screw working chamber agreed well with the experimental results in both time and frequency domains. The pressure pulsations in the compression section acting on the inner surface of the screw rotor housing presented higher levels than the data in the other domains. The highest pulsation level occurred on the location where could record the whole discharge process of the internal ports. Under the high oil flowrate conditions, due to the different influences of the fluid hammer effect, the pressure pulsation increment of the axial oil injection outlet was much larger than that of the radial oil injection outlet. The orifice on the oil path could help reduce the influence of the fluid hammer. Finally, several suggestions were given based on the simulation findings.
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Details
- Original title: CFD simulation for the internal pressure characteristics of an oil-injected twin-screw refrigeration compressor.
- Record ID : 30028294
- Languages: English
- Subject: Technology
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 126
- Publication date: 2021/06
- DOI: http://dx.doi.org/10.1016/j.ijrefrig.2021.01.020
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Numerical evaluation of an oil free screw compr...
- Author(s) : TANKHIWALE S., DAGWAR A., RANE S., KOVACEVIC A., BIRARI A., ABDAN S., ASATI N.
- Date : 2021/09
- Languages : English
- Source: 12th International Conference on Compressors and their Systems
- Formats : PDF
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Refreshed internal working characteristics of t...
- Author(s) : WU W., ZHANG Z., PENG C., LI X., YANG Y., LEI W.
- Date : 2022/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 143
- Formats : PDF
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Application of computational fluid dynamics to ...
- Author(s) : HSIEH S. H., ZHANG J. W., HUANG C. S.
- Date : 2021/05
- Languages : English
- Source: 2021 Purdue Conferences. 25th International Compressor Engineering Conference at Purdue.
- Formats : PDF
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CFD analysis of a twin screw compressor with oi...
- Author(s) : WANG J., DING H., RANE S., KOVACEVIC A.
- Date : 2021/05
- Languages : English
- Source: 2021 Purdue Conferences. 25th International Compressor Engineering Conference at Purdue.
- Formats : PDF
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Transient analysis of startup characteristics o...
- Author(s) : LIU Y., WANG C., LIAO X., XING Z.
- Date : 2022/07/15
- Languages : English
- Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
- Formats : PDF
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