R134a外螺纹管水冷冷凝器研究Research on R134a Water-cooling Condenser Using External Micro-fin Tube
尹斌,欧阳惕,丁国良
YIN Bin~(1,2),OU Yang-Ti~2
摘要(Abstract)：
采用一种新的冷凝换热模型,对R134a外螺纹管水冷冷凝器进行研究。通过样机设计,并在多功能焓差室标准工况下进行试验,由试验数据反推外螺纹管水冷冷凝器的管外平均冷凝换热系数。通过比较发现,冷凝换热系数的模型计算值比试验值大15%。
A new type of condensation heat transfer model was used to research on water-cooling condenser of external screw tubes.Through design sample equipment and experiment in multifunctional enthalpy-difference room,then average condensation heat transfer coefficient of external screw tubes water-cooling condenser from experiment data was deduced.The comparison results show model's calculation value of condensation heat transfer coefficient is big 15% than experiment value of condensation heat transfer coefficient.
关键词(KeyWords)：
R134a;外螺纹管;冷凝器
R134a;external micro-fin tube;condenser
基金项目(Foundation):
作者(Author):
尹斌,欧阳惕,丁国良
YIN Bin~(1,2),OU Yang-Ti~2
参考文献(References)：
- [1]Tord Karlsson,Lennart Vamling.Flow fields in shell-tube condensers:comparison of a pure refrigerant and abinary mixture[J].International Journal of Refrigeration,2005,28:706-713.
- [2]Honda H,Takata N,Kim J s,et al.Condensation of down-ward-flowing HFC134a in a staggered bundle of horizon-tal finned tubes:effect of fin geometry[J].InternationalJournal of Refrigeration,2002,25:3-10.
- [3]Kumar R,Varm H K,Mohanty B,et al.Prediction of heattransfer coefficient during condensation of water and R134aon single horizontal integral-fin tubes[J].InternationalJournal of Refrigeration,2002,25:111-126.
- [4]谷波,魏跃文,韩荣梅.低螺纹管的冷凝换热分析[J].制冷学报,2001,(4):6-10.
- [5]庄正宁,唐桂华,朱长新.不凝性气体存在时水平管束冷凝换热特性的试验研究[J].西安交通大学学报,2000,34(7):35-38.