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气固两相流强化传热研究进展
Authors
丁玉龙
刘传平
+3 more
李传
李永亮
王立
Publication date
1 January 2014
Publisher
Abstract
在气流中加入颗粒,形成气固两相流。根据气流速度的不同,气固两相流分为鼓泡流态化、快速流态化、气力输送等形式。不同的流动形态,两相流内颗粒浓度及颗粒的运动规律不同,其传热特点也存在差异。通过回顾几种多相流流态的传热特点,总结了多相流与传热面换热的影响因素、气固两相流的传热机理与模型。气固两相流中颗粒浓度、颗粒运动对其传热起决定性作用,而操作参数(气流速度、床层压力、床层温度等)则主要通过改变颗粒浓度和颗粒运动影响传热。此外,通过气固两相流强化传热的应用实例——气固两相流与填充床的热交换,分析了颗粒在对流换热中所起的作用,并进一步提出了今后研究方向和难点所在
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 09/11/2016