Experimental investigation of frost formation on a horizontal cold cylinder under cross flow

被引：12
|
作者：
Barzanoni, Y. [1 ]
Noorshams, O. [1 ]
Tabrizi, H. Basirat [1 ]
Damangir, E. [1 ]
机构：
[1] Amir Kabir Univ Technol, Dept Mech Engn, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2011年 / 34卷 / 04期
关键词：
Cross flow; Frosting; Horizontal cylinder; Measurement; Moist air; Test rig; DIMENSIONLESS CORRELATIONS; HEAT-TRANSFER; SURFACE; MODEL; GROWTH;
D O I：
10.1016/j.ijrefrig.2011.02.011
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present work, frost formation on a horizontal cold cylinder was investigated experimentally. An apparatus was designed and carried out on a physical model which was included an air tunnel and a cold cylinder exposed to humid air flow. It was found that the frost layers formed on the front and rear surfaces of the cylinder were thicker than the top surfaces where the flow separation was nearly or wholly initiated. The effects of air flow parameters such as flow Reynolds number, entrained air temperature, absolute air humidity and temperature of cylinder surface on the frost thickness and density formed over the cylinder were studied. In this paper, the dew point temperature of the inlet air was above the freezing point and also the earlier transition time was investigated. (C) 2011 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：1174 / 1180
页数：7
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