Microjet array single-phase and flow boiling heat transfer with R134a

被引：53
作者：
Browne, Eric A. [1 ]
Michna, Gregory J. [2 ]
Jensen, Michael K. [1 ]
Peles, Yoav [1 ]
机构：
[1] Rensselaer Polytech Inst, Troy, NY 12180 USA
[2] S Dakota State Univ, Dept Mech Engn, Brookings, SD 57007 USA
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2010年 / 53卷 / 23-24期
关键词：
Microjet; Jet array; Impingement; Flow boiling; TRANSFER DISTRIBUTIONS; CORRELATING EQUATIONS; IMPINGEMENT; JET; GAS;
D O I：
10.1016/j.ijheatmasstransfer.2010.07.062
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An experimental study of single-phase and flow boiling heat transfer of a submerged microjet array was conducted with R134a. The staggered array of seventeen 112-mu m diameter orifices impinged onto a 1 x 1-mm heater. Single-phase data were gathered over the range 3050 <= Re-d <= 10,600 with 53.6 <= (Nu(d)) over bar 128. Boiling experiments were conducted with liquid subcoolings of 10, 20, and 30 degrees C at jet velocities of 4, 7, and 10 m/s. Boiling was generally found to enhance heat transfer with a maximum heat flux of 590 W/cm(2). However, temperature excursions occurred at low superheats and were found to be related to non-condensable gas content. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5027 / 5034
页数：8
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