Pool boiling heat transfer enhancement of R134a, R32, and R600a using reentrant cavity surfaces

被引：6
作者：
Shete, Umakant N. [1 ]
Kumar, Ravi [1 ]
Chandra, Ramesh [2 ]
机构：
[1] Indian Inst Technol, Dept Mech & Ind Engn, Roorkee 247667, Uttar Pradesh, India
[2] Indian Inst Technol, Inst Instrumentat Ctr, Roorkee, Uttar Pradesh, India
来源：
EXPERIMENTAL HEAT TRANSFER | 2023年 / 36卷 / 04期
关键词：
Heat transfer; reentrant cavity; R-134a; R-32; R-600a; TUBES; WATER;
D O I：
10.1080/08916152.2022.2055226
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The nucleated pool boiling heat transfer experiments for plain and five different reentrant cavity copper tube surfaces in saturated R134a, R32, and R600a have been carried out. The experiments are carried for heat fluxes ranging from 6.92 to 51.71 kW/m(2) at saturation temperatures of 7 degrees C and 10 degrees C. A significant increase in the boiling heat transfer coefficient has been observed for all tube surfaces with the reentrant cavity. The nucleate boiling heat transfer coefficient for R134a, R32, and R600a is 1.2-2.8 times more than that for plain tube surfaces. A correlation for reentrant cavity surfaces has also been developed.
引用
收藏
页码：528 / 547
页数：20
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