| 并流多通道管壳式换热器壳程流场分布 |
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| 引用本文： | 曾文良,邓先和.并流多通道管壳式换热器壳程流场分布[J].化工学报,2011,62(12):3352-3360. |
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| 作者姓名： | 曾文良 邓先和 |
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| 作者单位： | 华南理工大学传热强化与过程节能教育部重点实验室，广东 广州 510640 |
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| 基金项目： | 湖南省自然科学基金项目(10JJ9021); 国家自然科学基金项目(20776046)~~ |
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| 摘 要： | 对一种新型并流多通道进出口结构（MPC）轴流管壳式换热器壳程流场分布与阻力性能进行全面研究，分别研究了管排数、Reynolds数、不同挡板对壳程流场分布、阻力性能的影响，并且采用实验方法对数值模型与方法的正确性进行论证。研究结果表明，在无挡板的情况下，随着管排数的减小，壳程流场分布不均现象得到有效的遏制，压降大幅降低，最大降幅达到70％以上；挡板能够有效促进流场的二次分布，但是同时亦使阻力增大较为显著。
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| 关 键 词： | 流场分布 压降 并流多通道 管壳式换热器 |
Shell-side fluid flow field in shell-and-tube heat exchanger with multi-parallel-channel |
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| ZENG Wenliang,DENG Xianhe.Shell-side fluid flow field in shell-and-tube heat exchanger with multi-parallel-channel[J].Journal of Chemical Industry and Engineering(China),2011,62(12):3352-3360. |
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| Authors: | ZENG Wenliang DENG Xianhe |
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| Affiliation: | ZENG Wenliang,DENG Xianhe(Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education South China University of Technology,Guangzhou 510640,Guangdong,China) |
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| Abstract: | The decrease in length-diameter ratio may lead to some technical problems in shell-and-tube heat exchangers,such as fluid flow maldistribution,sharp increase of pressure drop,and performance deterioration.In order to solve above problems,two techniques are proposed in this study,application of a novel structure of multi-parallel-channel inlet/outlet(MPC)and installation of fluid flow distributors(FDBs)in the region of inlet/outlet in shell-side.The shell-side fluid flow is simplified according to its struct... |
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| Keywords: | flow field distribution pressure drop multi-parallel-channel shell-and-tube heat exchanger |
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