Influencing Factors on Heat Transfer Performance for Flow Boiling of R410A in Horizontal Micro-Fin Tubes

被引:0
|
作者
He, H. P. [1 ]
Ma, H. G. [1 ]
Bai, J. M. [1 ]
机构
[1] Shanghai Univ Sci & Technol, Coll Power Engn, Shanghai 200093, Peoples R China
来源
关键词
flow boiling; R410A; micro-fin tube; heat transfer characteristics; influencing factors; PRESSURE-DROP; 5; MM; EVAPORATION; MIXTURE;
D O I
10.4028/www.scientific.net/AMR.472-475.1676
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Flow boiling heat transfer performances of refrigerant R410A in the horizontal micro-fin tubes with different geometric parameters were investigated. The dependencies of forced flow boiling heat transfer coefficient of R410A on mass flow rate, heat flux and were studied and the mechanism of flow boiling heat transfer under different working conditions were discussed. For a comparison, the influences of fin number and fin height of micro-fin tubes on heat transfer were also studied. The differences of heat transfer coefficient between R22 and R410A were analyzed. It is found that the heat transfer coefficients were nearly same for R22 and R410A and, in fact, the heat transfer coefficient of R22 was just a little higher than that of R410A by 4-7%.
引用
收藏
页码:1676 / 1680
页数:5
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