Summary
With the trend towards miniaturization of rotary compressors, increasing the speed of compressors and improving performance at high speed have become important research directions. Simultaneously, due to the need for refrigerants with low global warming potential (GWP), R290 has become an important alternative to hydrofluorocarbons (HFCs). Under the same compressor structure size, meeting the cooling/heating demands with R290 necessitates higher operating speed owing to its lower cooling capacity per unit volume. In this paper, the performance loss distribution of an ultra-high-speed R290 rotary compressor has been studied theoretically and experimentally, and the accuracy of theoretical calculation was verified through experiments. According to the calculation, the primary factor influencing the performance of the ultra-high-speed rotary compressor is over-compression loss. Consequently, corresponding solutions to improve the performance of the ultra-high-speed compressor were proposed. The internal parameters of the compressor were measured, thereby validating the conclusions and assessing the efficacy of the proposed solutions. Finally, the structure parameters were further optimized, which was also verified by experiments. It is found that the double-valve structure can effectively reduce the over-compression loss. When operating at 10,800 rpm under the ASHRAE T1, compared with the prototype, the compressor with double-valve structure can reduce the over-compression loss by 45.0 %, and increase the cyclic thermodynamic perfection by 7.85 %.
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Details
- Original title: Performance research and improvement of ultra-high-speed R290 rotary compressor.
- Record ID : 30032491
- Languages: English
- Subject: Technology
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 165
- Publication date: 2024/09
- DOI: http://dx.doi.org/10.1016/j.ijrefrig.2024.06.010
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Indexing
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Themes:
Compressors;
Hydrocarbons - Keywords: Rotary compressor; R290; Compression; Loss; Performance; Simulation; Expérimentation
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Research and development of R290 less oil rotar...
- Author(s) : GAO B., QIAN C., CHEN Z., et al.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
- Formats : PDF
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Research of lubrication oil applied to a R290 r...
- Author(s) : CHEN Z., GAO B.
- Date : 2011/08/21
- Languages : English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Formats : PDF
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Experimental analysis on R290 solubility and R2...
- Author(s) : WU J., CHEN Z., LIN J., et al.
- Date : 2018/10
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 94
- Formats : PDF
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Researches on heat pump system using rotary com...
- Author(s) : SHI J., GAO T., LU B., et al.
- Date : 2016/07/11
- Languages : English
- Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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Experimental investigation on cold startup char...
- Author(s) : WU J., LIN J., ZHANG Z., et al.
- Date : 2016/05
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 65
- Formats : PDF
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