Summary
Intermittent gas flow generates pressure oscillations in the twin-screw refrigeration compressor that cause serious problems such as structural vibration and noise. In order to reduce the amplitude of this pressure pulsation, a pressure pulsation dampener (PPD) applied in the discharge chamber of a twin screw refrigeration compressor was proposed based on the theory of Helmholtz resonator. A mathematical model was developed to design an optimal PPD by incorporating the R134-oil mixture sound speed model and the pressure pulsation simulation model. A comprehensive experimental study was then performed to validate the model and evaluate the effect of key parameters such as oil flow rate and cavity volume on attenuation performance of the PPD. Vibrational characteristics of the compressor equipped with and without the PPD were also measured and compared. Under the design frequency of 250?Hz, the vibrational acceleration of compressor under-chassis reduced by 36.2% to 41.1% when the compressor was fitted with the proposed PPD.
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Details
- Original title: Performance investigation of a pressure pulsation dampener applied in the discharge chamber of a twin screw refrigeration compressor.
- Record ID : 30022746
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 85
- Publication date: 2018/01
- DOI: http://dx.doi.org/10.1016/j.ijrefrig.2017.09.012
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Indexing
- Themes: Compressors
- Keywords: Pulsation; Noise; Gas; Vibration; Discharge; Modelling; Pressure; Flow; Screw compressor
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Numerical simulation of discharge process in th...
- Author(s) : ZHANG Z., PENG C., WU W.
- Date : 2018/07/09
- Languages : English
- Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
- Formats : PDF
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Theoretical analysis of noise and vibration gen...
- Author(s) : HE D., ZIVIANI D., LIU Y.
- Date : 2021/05
- Languages : English
- Source: 2021 Purdue Conferences. 25th International Compressor Engineering Conference at Purdue.
- Formats : PDF
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Experimental investigation on damping performan...
- Author(s) : JIA X., YU X., REN Y., et al.
- Date : 2017/07/20
- Languages : English
- Source: 8th international conference on compressors and refrigeration, 2017.
- Formats : PDF
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Incorporating 3D suction or discharge plenum ge...
- Author(s) : SAULS J., NOVAK K.
- Date : 2012/07/16
- Languages : English
- Source: 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
- Formats : PDF
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Noise control of a twin-screw refrigeration com...
- Author(s) : HE Z., LI D., HAN Y., ZHOU M., XING Z., WANG X.
- Date : 2021/04
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 124
- Formats : PDF
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