Experimental study of critical heat flux in concentric-tube open thermosyphon

被引：14

作者：

Islam, MA ^{[1
]}

Monde, M ^{[1
]}

Hasan, MZ ^{[1
]}

Mitsutake, Y ^{[1
]}

机构：

[1] Saga Univ, Dept Engn Mech, Saga 840, Japan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1998年 / 41卷 / 23期

关键词：

D O I：

10.1016/S0017-9310(98)00149-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An experimental study has been performed to understand the critical heat flux (CHF) mechanism in an open concentric-tube thermosyphon. by which the CHF can be increased by several times compared to a conventional one. Experiments are conducted with saturated water, R113, and ethanol at various working pressures and by varying different geometrical parameters of the thermosyphon such as inner diameter of the outer tube, outer diameter of the inner tube, and heated length. For a particular heated tube diameter working with a specific fluid, there is an optimum diameter of the inner tube for which the CHF is maximum. The optimum diameter of the inner tube divides the CHF into two characteristic regions. The CHF characteristics in each region are discussed and then correlations for predicting the CHF data are proposed. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：3691 / 3704

页数：14

共 17 条

[1]

COLLIER JG, 1981, CONVECTIVE BOILING C, P208

[2] STEADY-STATE CHARACTERISTICS AND STABILITY THRESHOLDS OF A CLOSED 2-PHASE THERMOSYPHON [J].