Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System
The gravity recirculation refrigeration system has two significant advantages compared with the ordinary direct-expansion refrigeration system. The lower the evaporation temperature, the clearer the efficiency advantage, and the lower temperature obtained in the chamber. In this study, the pressure...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2021-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.06.059 |
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| _version_ | 1849707587083173888 |
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| author | Ruan Jianwen Zhang Cheng Li Min Ye Biao |
| author_facet | Ruan Jianwen Zhang Cheng Li Min Ye Biao |
| author_sort | Ruan Jianwen |
| collection | DOAJ |
| description | The gravity recirculation refrigeration system has two significant advantages compared with the ordinary direct-expansion refrigeration system. The lower the evaporation temperature, the clearer the efficiency advantage, and the lower temperature obtained in the chamber. In this study, the pressure enthalpy diagram of a gravity recirculation system is redesigned based on the principle of a gravity recirculation system, and the thermodynamic cycle of a gravity recirculation system is divided into two cycles for analysis. By analyzing the flow resistance in the refrigerant flow process, the variation trend of the pressure in each part of the system is obtained. The experimental results show that the pressure at each state point is identical to the theoretical analysis results. The coefficient of performance (COP) of the gravity recirculation refrigeration system can be improved by up to 19% at different evaporation temperatures compared with the experimental results of the ordinary direct-expansion refrigeration system, and the COP reaches 1.07 at ?30 °C. |
| format | Article |
| id | doaj-art-7c10dac7a2b54ff88e1b301ea235249a |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-7c10dac7a2b54ff88e1b301ea235249a2025-08-20T03:15:53ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392021-01-014266505195Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration SystemRuan JianwenZhang ChengLi MinYe BiaoThe gravity recirculation refrigeration system has two significant advantages compared with the ordinary direct-expansion refrigeration system. The lower the evaporation temperature, the clearer the efficiency advantage, and the lower temperature obtained in the chamber. In this study, the pressure enthalpy diagram of a gravity recirculation system is redesigned based on the principle of a gravity recirculation system, and the thermodynamic cycle of a gravity recirculation system is divided into two cycles for analysis. By analyzing the flow resistance in the refrigerant flow process, the variation trend of the pressure in each part of the system is obtained. The experimental results show that the pressure at each state point is identical to the theoretical analysis results. The coefficient of performance (COP) of the gravity recirculation refrigeration system can be improved by up to 19% at different evaporation temperatures compared with the experimental results of the ordinary direct-expansion refrigeration system, and the COP reaches 1.07 at ?30 °C.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.06.059gravity recirculation refrigeration systemdirect expansion refrigeration systemtheoretical analysispressure-enthalpy diagram |
| spellingShingle | Ruan Jianwen Zhang Cheng Li Min Ye Biao Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System Zhileng xuebao gravity recirculation refrigeration system direct expansion refrigeration system theoretical analysis pressure-enthalpy diagram |
| title | Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System |
| title_full | Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System |
| title_fullStr | Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System |
| title_full_unstemmed | Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System |
| title_short | Theoretical Analysis and Experimental Study of Gravity Recirculation Refrigeration System |
| title_sort | theoretical analysis and experimental study of gravity recirculation refrigeration system |
| topic | gravity recirculation refrigeration system direct expansion refrigeration system theoretical analysis pressure-enthalpy diagram |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.06.059 |
| work_keys_str_mv | AT ruanjianwen theoreticalanalysisandexperimentalstudyofgravityrecirculationrefrigerationsystem AT zhangcheng theoreticalanalysisandexperimentalstudyofgravityrecirculationrefrigerationsystem AT limin theoreticalanalysisandexperimentalstudyofgravityrecirculationrefrigerationsystem AT yebiao theoreticalanalysisandexperimentalstudyofgravityrecirculationrefrigerationsystem |