[1]郑文远,吴京泽.R134a在锯齿型翅片中的沸腾换热实验研究[J].南京理工大学学报(自然科学版),2014,38(03):419.
 Zheng Wenyuan,Wu Jingze.Experimental study on boiling heat transfer of R134a in offset strip fins[J].Journal of Nanjing University of Science and Technology,2014,38(03):419.
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R134a在锯齿型翅片中的沸腾换热实验研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
38卷
期数:
2014年03期
页码:
419
栏目:
出版日期:
2014-06-30

文章信息/Info

Title:
Experimental study on boiling heat transfer of R134a in offset strip fins
作者:
郑文远吴京泽
中航工业集团公司 航空机电系统综合航空科技重点实验室,江苏 南京 211106
Author(s):
Zheng WenyuanWu Jingze
Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Aviation Industry Corporation of China,Nanjing 211106,China
关键词:
R134a锯齿型翅片沸腾换热质量流速Bertsch关联式板翅式蒸发器表面温度对流换热系数平直通道制冷量
Keywords:
R134aoffset strip finsboiling heat transfermass flow ratesBertsch correlationplatefin evaporatorssurface temperatureconvective heat transfer coefficientsstraight channelscooling capacities
分类号:
TK124
摘要:
为设计板翅式蒸发器,采用实验方法研究不同质量流速下R134a在锯齿型翅片中的沸腾换热系数。对比Bertsch关联式计算值与实验值得到其沸腾换热系数修正式,并通过相同型面板翅式蒸发器实验对该修正式进行验证。实验结果表明:在不同入口条件下,沿流动方向,锯齿型翅片表面温度变化趋势一致,由起初较平稳状态到距入口290 mm处显著增大;在相同质量流速下,R134a在锯齿型翅片中的对流换热系数远大于平直通道;Bertsch关联式沸腾换热系数修正式计算的制冷量与实验值误差约为10%。
Abstract:
In order to design platefin evaporators,the boiling heat transfer coefficients of R134a in offset strip fins are studied experimentally under different mass flow rates.A modified formula of the boiling heat transfer coefficient of Bertsch correlation is obtained by comparing the calculation data of Berstch correlation with the experimental data,and it is verified by experiments of a platefin evaporator with the same structure.The experimental results show that the surface temperature of offset strip fins along the flow direction has the same changing trend under different entrance conditions,which almost has no change in the beginning but increase significantly at 290 mm position;under the same mass flow rates,the convective heat transfer coefficients of R134a in offset strip channels are much larger than those in straight channels;the deviations of cooling capacities calculated by the boiling heat transfer coefficient modified formula of Berstch correlation from experimental results are about 10%.

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备注/Memo

备注/Memo:
收稿日期:2013-11-16修回日期:2014-01-10
作者简介:郑文远(1973-),男,高级工程师,主要研究方向:飞行器环境控制、高效换热设备,E-mail:zhwy609@163.com。
引文格式:郑文远,吴京泽.R134a在锯齿型翅片中的沸腾换热实验研究[J].南京理工大学学报,2014,38(3):419-423.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2014-06-30