A model of the azimuthal capillary effect due to internal porous pipe coating in stratified two-phase flow

被引：3
作者：
Rojas, M. E.
De Andres, M. C.
机构：
[1] CIEMAT, Renewable Energy Div, Madrid 28040, Spain
[2] Univ Complutense, Fac Phys, Renewable Energy Grp, E-28040 Madrid, Spain
来源：
JOURNAL OF ENHANCED HEAT TRANSFER | 2006年 / 13卷 / 04期
关键词：
porous coatings; two-phase stratified flow; enhanced solar thermal receivers; direct steam generation; heat pipes;
D O I：
10.1615/JEnhHeatTransf.v13.i4.40
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents a model for predicting the azimuthal effect produced by a porous coating inside a pipe when an external heat flux is applied. Thanks to this effect, such a porous coating helps to keep the inner surface of the pipe wet above the level of the stratified two-phase flow, enhancing the transference of an external heat flux. The paper also presents experimental results which are in agreement with the theoretical model and reveal some problems related to the use of porous coatings under severe conditions.
引用
收藏
页码：321 / 332
页数：12
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