Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler
In this study a cooling-fan simulation model was established using the steady-state distributed parameter method, and the performance of a cooling-fan prototype was tested in an air-blower performance test rig. Further, a cooler heat transfer performance analysis was conducted based on the experimen...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2017-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.05.051 |
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| _version_ | 1849705194720329728 |
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| author | Shen Jiang Bian Yujun Huang Bing |
| author_facet | Shen Jiang Bian Yujun Huang Bing |
| author_sort | Shen Jiang |
| collection | DOAJ |
| description | In this study a cooling-fan simulation model was established using the steady-state distributed parameter method, and the performance of a cooling-fan prototype was tested in an air-blower performance test rig. Further, a cooler heat transfer performance analysis was conducted based on the experimental data and numerical simulation. For a temperature calibration of ?25-0 ℃ and a circulation rate varying in the range of 2-5, it was found that the total heat transfer coefficient increases with increasing calibration-box temperature. When the refrigerant is CO2, the cooling capacity of the cooling fan is obviously higher than that for an NH3 refrigerant. Further, the cooling capacity is 42% higher when the temperature in the tank is 0 ℃ and 26% higher for a tank temperature of ?20 ℃. The pressure drop of inner side of the tube increases with increases in the circulation rate. Further, the heat transfer coefficient first increases and then decreases with increases in the circulation rate. The circulation ratio is approximately 3, corresponding to the maximum change in the thermal coefficient. The simulation results exhibit the same trend as the test results, but some errors exist. The error of heat transfer coefficient between the numerical and test results is approximately 16% for the NH3 system, and approximately 8% for the CO2 system. |
| format | Article |
| id | doaj-art-b858482885bf44c0ae8cccf7d2d5ca79 |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-b858482885bf44c0ae8cccf7d2d5ca792025-08-20T03:16:32ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392017-01-013866512404Simulation and Experimental Study on Heat Transfer Performance of CO2 Air CoolerShen JiangBian YujunHuang BingIn this study a cooling-fan simulation model was established using the steady-state distributed parameter method, and the performance of a cooling-fan prototype was tested in an air-blower performance test rig. Further, a cooler heat transfer performance analysis was conducted based on the experimental data and numerical simulation. For a temperature calibration of ?25-0 ℃ and a circulation rate varying in the range of 2-5, it was found that the total heat transfer coefficient increases with increasing calibration-box temperature. When the refrigerant is CO2, the cooling capacity of the cooling fan is obviously higher than that for an NH3 refrigerant. Further, the cooling capacity is 42% higher when the temperature in the tank is 0 ℃ and 26% higher for a tank temperature of ?20 ℃. The pressure drop of inner side of the tube increases with increases in the circulation rate. Further, the heat transfer coefficient first increases and then decreases with increases in the circulation rate. The circulation ratio is approximately 3, corresponding to the maximum change in the thermal coefficient. The simulation results exhibit the same trend as the test results, but some errors exist. The error of heat transfer coefficient between the numerical and test results is approximately 16% for the NH3 system, and approximately 8% for the CO2 system.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.05.051heat transfer coefficientcalibration temperaturespressure drop inside the tubecirculation rate |
| spellingShingle | Shen Jiang Bian Yujun Huang Bing Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler Zhileng xuebao heat transfer coefficient calibration temperatures pressure drop inside the tube circulation rate |
| title | Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler |
| title_full | Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler |
| title_fullStr | Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler |
| title_full_unstemmed | Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler |
| title_short | Simulation and Experimental Study on Heat Transfer Performance of CO2 Air Cooler |
| title_sort | simulation and experimental study on heat transfer performance of co2 air cooler |
| topic | heat transfer coefficient calibration temperatures pressure drop inside the tube circulation rate |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.05.051 |
| work_keys_str_mv | AT shenjiang simulationandexperimentalstudyonheattransferperformanceofco2aircooler AT bianyujun simulationandexperimentalstudyonheattransferperformanceofco2aircooler AT huangbing simulationandexperimentalstudyonheattransferperformanceofco2aircooler |