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氨水竖管降膜蒸发实验和理论研究
Authors
卜宪标
马伟斌
龚宇烈
Publication date
1 January 2011
Publisher
Abstract
为了增强氨水竖管降膜蒸发过程中的热质传递效果,建立了降膜蒸发过程的数学模型,基于有限容积法对模型进行了求解,并通过实验验证了模型的准确性,用数学模型计算了溶液的速度场、浓度场、膜厚和换热量,得出结论:降膜蒸发过程的入口段小于100 mm,在入口段,溶液的流速和膜厚都发生剧烈的变化;最佳的布膜厚度是由溶液进口流量决定的;单位管长氨气的蒸发量随管长由上而下逐渐减小,前3 m管长的蒸发量占整个蒸发量的80.64%。基于建立的数学模型,可以确定不同流量下的布膜器最佳布膜厚度和管道最佳长度,为降膜换热器的优化设计提供参考
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/31683
Last time updated on 04/12/2021
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/19430
Last time updated on 05/12/2019
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/19432
Last time updated on 05/12/2019