Development and validation of a direct passage arrangement method for multistream plate fin heat exchangers
Development and validation of a direct passage arrangement method for multistream plate fin heat exchangers
复制标题
多流板翅式换热器直接通道布置方法的开发和验证
DOI：
10.1016/j.applthermaleng.2017.11.054
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发表时间：
2018-02
影响因子：
6.4
通讯作者：
Xu XW
中科院分区：
文献类型：
--
作者：
Li Rixin;Liu Jinping;Xu Xiongwen;Liu Jinping;Xu Xiongwen;Liu Jinping;Xu XW
通道布置质量对多股流板翅式换热器的性能影响很大，通道布置不良会导致通道间温差场和压力场不均匀，从而降低换热器的热效率。然而，由于MPFHE中大量可能的通道布置模式和通道之间复杂的传热过程，设计有效的通道布置是非常困难的。本研究针对此问题，发展一种供强积金家庭宿舍使用的直通安排方法。在该方法中，首次提出了具有良好协同传热效果的通道布置改进方案。建议每种流体的通道量的确定与其设计热负荷成正比。然后，根据校核计算结果，调整翅片和换热器结构参数，直至满足热效率、长度偏差和压降等约束条件。然后直接采用对称排列法排列通道。为了评估该方法的有效性，进行了三个不同的工业案例，并与现有的优化设计进行了比较，通过三种评价方法。验证结果表明，该方法的性能优于复杂优化方法。
Passage arrangement quality significantly affects the performance of multistream plate fin heat exchanger (MPFHEs) because a bad arrangement may result in uneven temperature difference field and pressure field between passages and thus reduce the thermal efficiency. However, it is very difficult to design an effective passage arrangement owing to large numbers of possible passage arrangement patterns and complex heat transfer processes between the passages in a MPFHE. This work develops a direct passage arrangement method for MPFHEs to address this problem. In this method, an improvement of passage arrangement with good synergistic heat transfer effect is first proposed. The determination of passage quantity for each fluid is suggested to be proportional to its design heat load. Next, based on the results of the checking calculation, the fin and heat exchanger structure parameters should be adjusted until the constraints including thermal effectiveness, length deviation and pressure drops have been satisfied. Afterwards, the passages are arranged directly by a symmetry arrangement method. To evaluate the effectiveness of this method, three different industrial cases are performed and compared with the existing optimization designs by three evaluation means. The validation results indicate that this method performs better than the complex optimization methods.
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影响因子：
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作者：
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DOI：
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影响因子：
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影响因子：
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通讯作者：
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DOI：
--
发表时间：
2010
期刊：
Low Temperature and Specialty Gases
影响因子：
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作者：
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通讯作者：
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