Investigation on the Heat Transfer Performance of Spray Cooling System with R134a
In order to investigate the influences of subcooling degree, mass flow rate and heat flux on the performance of the spray cooling system, a closed spray cooling system with R134a was built. The subcooling degree was adjusted by the subcooled section located before the nozzle inlet, the mass flow rat...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2015-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2015.04.001 |
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| _version_ | 1850071508699840512 |
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| author | Qian Chunchao Xu Hongbo Shao Shuangquan Tian Changqing Zhou Guanghui |
| author_facet | Qian Chunchao Xu Hongbo Shao Shuangquan Tian Changqing Zhou Guanghui |
| author_sort | Qian Chunchao |
| collection | DOAJ |
| description | In order to investigate the influences of subcooling degree, mass flow rate and heat flux on the performance of the spray cooling system, a closed spray cooling system with R134a was built. The subcooling degree was adjusted by the subcooled section located before the nozzle inlet, the mass flow rate was controlled by the variable gear pump, and the heat flux was dominated by changing the voltage and current of the heating power. The experimental results indicated that, the variation of subcooling degree did not have significantly influence on the heat surface temperature and heat transfer coefficient as the heat flux and the mass flow rate were fixed. When the heat flux and the subcooling degree were constant, there existed a critical value of the mass flow rate, as the mass flow rate was smaller than the critical value the heat surface temperature decreased with the mass flow rate increasing, on the contrary, the heat surface temperature would increase with the mass flow rate increasing when the mass flow rate exceeded the critical value. When the mass flow rate and the subcooled temperature kept constant, there also existed a heat flux value which made the evaporation capacity equal to the supplement of droplets, therefore the heat transfer coefficient could reach the maximum value. |
| format | Article |
| id | doaj-art-c49c938883be49bcbe219a7a1f49da88 |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2015-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-c49c938883be49bcbe219a7a1f49da882025-08-20T02:47:17ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392015-01-013666514624Investigation on the Heat Transfer Performance of Spray Cooling System with R134aQian ChunchaoXu HongboShao ShuangquanTian ChangqingZhou GuanghuiIn order to investigate the influences of subcooling degree, mass flow rate and heat flux on the performance of the spray cooling system, a closed spray cooling system with R134a was built. The subcooling degree was adjusted by the subcooled section located before the nozzle inlet, the mass flow rate was controlled by the variable gear pump, and the heat flux was dominated by changing the voltage and current of the heating power. The experimental results indicated that, the variation of subcooling degree did not have significantly influence on the heat surface temperature and heat transfer coefficient as the heat flux and the mass flow rate were fixed. When the heat flux and the subcooling degree were constant, there existed a critical value of the mass flow rate, as the mass flow rate was smaller than the critical value the heat surface temperature decreased with the mass flow rate increasing, on the contrary, the heat surface temperature would increase with the mass flow rate increasing when the mass flow rate exceeded the critical value. When the mass flow rate and the subcooled temperature kept constant, there also existed a heat flux value which made the evaporation capacity equal to the supplement of droplets, therefore the heat transfer coefficient could reach the maximum value.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2015.04.001spray coolingheat transfer coefficientsubcooling degreeheat fluxmass flow rateR134a |
| spellingShingle | Qian Chunchao Xu Hongbo Shao Shuangquan Tian Changqing Zhou Guanghui Investigation on the Heat Transfer Performance of Spray Cooling System with R134a Zhileng xuebao spray cooling heat transfer coefficient subcooling degree heat flux mass flow rate R134a |
| title | Investigation on the Heat Transfer Performance of Spray Cooling System with R134a |
| title_full | Investigation on the Heat Transfer Performance of Spray Cooling System with R134a |
| title_fullStr | Investigation on the Heat Transfer Performance of Spray Cooling System with R134a |
| title_full_unstemmed | Investigation on the Heat Transfer Performance of Spray Cooling System with R134a |
| title_short | Investigation on the Heat Transfer Performance of Spray Cooling System with R134a |
| title_sort | investigation on the heat transfer performance of spray cooling system with r134a |
| topic | spray cooling heat transfer coefficient subcooling degree heat flux mass flow rate R134a |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2015.04.001 |
| work_keys_str_mv | AT qianchunchao investigationontheheattransferperformanceofspraycoolingsystemwithr134a AT xuhongbo investigationontheheattransferperformanceofspraycoolingsystemwithr134a AT shaoshuangquan investigationontheheattransferperformanceofspraycoolingsystemwithr134a AT tianchangqing investigationontheheattransferperformanceofspraycoolingsystemwithr134a AT zhouguanghui investigationontheheattransferperformanceofspraycoolingsystemwithr134a |