Convective Heat and Mass Transfer Modeling in Gas-Fluidized Beds
Convective Heat and Mass Transfer Modeling in Gas-Fluidized Beds
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DOI：
10.1002/ceat.200407014
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发表时间：
2005
影响因子：
2.1
通讯作者：
R. Yusuf;M. Melaaen;V. Mathiesen
中科院分区：
文献类型：
--
作者：
R. Yusuf;M. Melaaen;V. Mathiesen
本文综述了文献中报道的用于预测气体流化床对流传热和传质系数的机制和经验模型。在开始建模方法之前，简要概述了流体力学在传热传质中的作用。考虑了床壁传热和相间传热。在床层-壁面传热中，本文的重点是基于表面更新的颗粒对流分量的建模。本文还简要讨论了瞬态传热模型和局部传热模型的概念。在传质的情况下，只考虑相间传质。重点放在基于燃烧的模型上，其中的传质是由惰性颗粒流化床中含有的一些活性颗粒发生的。
This review examines selected mechanistic and empirical models reported in the literature to predict convective heat and mass transfer coefficients in gas-fluidized beds. The role of hydrodynamics in heat and mass transfer is briefly outlined before embarking on the modeling approaches. Both bed to wall and interphase heat transfer, are considered. In bed to wall heat transfer, the main focus of the review is the modeling of particle convective components, based on surface renewal. The concepts of transient and local heat transfer models are also discussed briefly. In the case of mass transfer, only interphase transfer is considered. Emphasis is placed on models based on combustion where mass transfer is seen to occur from a few active particles contained in a fluidized bed of inert particles.