Experimental Research on the R134a/CO2 Cascade Refrigeration System
A test rig of the R134a/CO2 cascade supermarket refrigeration system has been built up to get a comprehensive understanding of its performance. The results show that the maximum COP of the system occurred when the condensing temperature of the CO2 cycle was about -2℃, the condensing temperature of R...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2013-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.04.059 |
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| _version_ | 1850232985055395840 |
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| author | Shen Jiubing Hu Bin Qiu Jianwei Cao Feng Xing Ziwen |
| author_facet | Shen Jiubing Hu Bin Qiu Jianwei Cao Feng Xing Ziwen |
| author_sort | Shen Jiubing |
| collection | DOAJ |
| description | A test rig of the R134a/CO2 cascade supermarket refrigeration system has been built up to get a comprehensive understanding of its performance. The results show that the maximum COP of the system occurred when the condensing temperature of the CO2 cycle was about -2℃, the condensing temperature of R134a and the evaporating temperature of CO2 was settled at 48℃ and -30℃ respectively with a temperature difference of 3℃. Moreover, the COP remained stable while the condensing temperature varied within a certain range of ±5℃. Results also show that the maximum deviation of the compressor adiabatic efficiency is within 4%, the main factor affecting the system cooling capacity is the compressor volumetric efficiency. And the performance of the cascade system could be 3% higher compared with that of conventional R404a refrigeration system at the same condition. |
| format | Article |
| id | doaj-art-3527659ae39044ee8d54abc201aed4bd |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2013-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-3527659ae39044ee8d54abc201aed4bd2025-08-20T02:03:01ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392013-01-013466518372Experimental Research on the R134a/CO2 Cascade Refrigeration SystemShen JiubingHu BinQiu JianweiCao FengXing ZiwenA test rig of the R134a/CO2 cascade supermarket refrigeration system has been built up to get a comprehensive understanding of its performance. The results show that the maximum COP of the system occurred when the condensing temperature of the CO2 cycle was about -2℃, the condensing temperature of R134a and the evaporating temperature of CO2 was settled at 48℃ and -30℃ respectively with a temperature difference of 3℃. Moreover, the COP remained stable while the condensing temperature varied within a certain range of ±5℃. Results also show that the maximum deviation of the compressor adiabatic efficiency is within 4%, the main factor affecting the system cooling capacity is the compressor volumetric efficiency. And the performance of the cascade system could be 3% higher compared with that of conventional R404a refrigeration system at the same condition.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.04.059cascade refrigeration systemexperimental researchR134a/CO2 |
| spellingShingle | Shen Jiubing Hu Bin Qiu Jianwei Cao Feng Xing Ziwen Experimental Research on the R134a/CO2 Cascade Refrigeration System Zhileng xuebao cascade refrigeration system experimental research R134a/CO2 |
| title | Experimental Research on the R134a/CO2 Cascade Refrigeration System |
| title_full | Experimental Research on the R134a/CO2 Cascade Refrigeration System |
| title_fullStr | Experimental Research on the R134a/CO2 Cascade Refrigeration System |
| title_full_unstemmed | Experimental Research on the R134a/CO2 Cascade Refrigeration System |
| title_short | Experimental Research on the R134a/CO2 Cascade Refrigeration System |
| title_sort | experimental research on the r134a co2 cascade refrigeration system |
| topic | cascade refrigeration system experimental research R134a/CO2 |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.04.059 |
| work_keys_str_mv | AT shenjiubing experimentalresearchonther134aco2cascaderefrigerationsystem AT hubin experimentalresearchonther134aco2cascaderefrigerationsystem AT qiujianwei experimentalresearchonther134aco2cascaderefrigerationsystem AT caofeng experimentalresearchonther134aco2cascaderefrigerationsystem AT xingziwen experimentalresearchonther134aco2cascaderefrigerationsystem |