Heat transfer and void fraction profiles around a horizontal cylinder immersed in a bubbling fluidised bed

被引：32
作者：
Di Natale, Francesco [1 ]
Bareschino, Piero [2 ]
Nigro, Roberto [1 ]
机构：
[1] Univ Naples Federico II, Dipartimento Ingn Chim, I-80125 Naples, Italy
[2] Univ Sannio, Dipartimento Ingn, I-82100 Benevento, Italy
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2010年 / 53卷 / 17-18期
关键词：
Heat transfer; Fluidised bed; Surface void fraction; Horizontal cylinder; TRANSFER COEFFICIENTS; PARTICLE; GAS; SURFACE; MODEL; TUBE;
D O I：
10.1016/j.ijheatmasstransfer.2010.04.013
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The local void fraction profile around a surface immersed in a fluidised bed has a great importance for the estimation of transport phenomena and chemical reaction rates in these units but it is rarely reported in literature. The scope of this work is to demonstrate that heat transfer measurements can be reliably used to derive the void fraction profile once a proper correlation model is available. To this aim, measurements of local heat transfer coefficient around a horizontal cylinder were performed and the angular void fraction profile was reconstructed with a new heat transfer model. The modeled void fraction profile resulted coherent with experimental and numerical evidences available in literature. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3525 / 3532
页数：8
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