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R32 has been considered as an important alternative in the phase-out of hydrochlorofluorocarbons (HCFCs) due to its advantages such as relatively low global warming potential compared to R410A, favorable thermal properties. However, the increased discharge temperature of the R32 compressor, compared with R410A, is the main barrier affecting the wide and quick adoption. In this work, three promising methods to decrease the discharge temperature of R32 scroll compressor, namely, two-phase suction, liquid injection and two-phase injection, have been investigated. By considering the variations of motor efficiency and leakage rate, an improved distributed parameter model of the scroll compressor is rebuilt based on a previously developed one (Wang et al., 2008). By that model, the effectiveness of these three methods in decreasing discharge temperature and their influence on thermodynamic performance are researched. It is concluded that all the three methods show excellent potential in decreasing the discharge temperature of R32 scroll compressor. Besides, two-phase injection outperforms the other two methods in cooling capacity and COP by 11.8% and 4.8%, respectively.
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Details
- Original title: Evaluation of two-phase suction, liquid injection and two-phase injection for decreasing the discharge temperature of the R32 scroll compressor.
- Record ID : 30016311
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 59
- Publication date: 2015/11
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Indexing
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Themes:
Compressors;
HFCs;
Two-phase flow - Keywords: Suction; Liquid; Temperature; Discharge; R32; Performance; Optimization; Injection; Scroll compressor
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- Languages : English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Formats : PDF
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Design and control of R32 two-phase refrigerant...
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- Date : 2015/05
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- Source: Journal of Refrigeration - vol. 36 - n. 165
- Formats : PDF
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An experimental study of a multi-port vapor inj...
- Author(s) : SONG Y., YANG B., GROLL E. A., et al.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
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Design of a compressor load stand capable of su...
- Author(s) : GU R., MATHISON M. M.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
- Formats : PDF
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Evaluation of methods to decrease the discharge...
- Author(s) : WANG B., YANG M., DEWITTE P., 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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