共 31 条
[31]
Zivi S.M., 1964, T AM SOC MECH ENG, V86, P247
R410A flow boiling in horizontal annular channels of enhanced tubes, part I: Pressure drop
被引：2
作者：
Zhang, Jianghui
Wang, Jiacheng
Li, Wei
Liu, Zhichun
Kabelac, Stephan
Tao, Zhi
Ma, Lianxiang
Tang, Weiyu
Sherif, S. A.
机构：
[1] Electromechanical Engineering College, Qingdao University of Science and Technology, Shandong, Qingdao, China
[2] Department of Energy Engineering, Zhejiang University, 38 Zheda Road, Zhejiang, Hangzhou, China
[3] Department of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan City,430074, China
[4] Institute for Thermodynamics, Gottfried Wilhelm Leibniz University Hanover, Garbsen,30823, Germany
[5] National Key Laboratory on Aero-Engines, School of Jet Propulsion, Beihang University, Beijing, 100191, China
[6] Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Zhejiang, Hangzhou,311215, China
[7] Department of Mechanical and Aerospace Engineering, University of Florida, P.O. Box 116300, Gainesville,FL,32611-6300, United States
基金：
美国国家科学基金会;
关键词：
R410A;
Flow boiling;
Annular enhanced channel;
Pressure drop;
Correlation;
2-PHASE FLOW;
EVAPORATION;
PREDICTION;
D O I：
10.1016/j.ijrefrig.2022.02.009
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Pressure drop during flow boiling of R410A was experimentally investigated at a saturation temperature of 279 K over a mass flux range of 50-80 kg/(m(2)s) and a vapor quality range of 0.2-0.8. The inner tubes with the same outside diameter of 19 mm contain a smooth tube and three enhanced tubes: a micro-porous (No. 1) tube, a ring shaped finned (No. 2) tube, and an independent small-bosses surface (No. 3) tube. It was observed that the pressure drop in single-phase and flow boiling conditions increased with the increase of the mass flux, and the ring-shaped finned tube showed the highest pressure drop (more than 1.35 times and 1.31 times that of the smooth tube, respectively) due to the effect of the ring-shaped fins. The pressure drop in the micro-porous tube and the smooth tube increased with the increase of outlet vapor quality in the range of the mass fluxes tested. Results from correlation analysis showed that two existing correlations can be implemented to predict the frictional pressure drop in a smooth tube within a deviation of +/- 10%. Improved correlations to predict pressure drop in the enhanced tubes were presented, and 94% of the data points of the micro-porous tube were predicted within a +/- 10% error band.
引用
收藏
页码：70 / 79
页数：10
相关论文