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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical Investigation On Combined Multiple Shell-pass Shell-and-tube Heat Exchanger With Continuous Helical Baffles
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Numerical Investigation On Combined Multiple Shell-pass Shell-and-tube Heat Exchanger With Continuous Helical Baffles

机译：连续螺旋折流板组合式多壳程管壳式换热器的数值研究

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摘要

A combined multiple shell-pass shell-and-tube heat exchanger (CMSP-STHX) with continuous helical baffles in outer shell pass has been invented to improve the heat transfer performance and simplify the manufacture process. The CMSP-STHX is compared with the conventional shell-and-tube heat exchanger with segmental baffles (SG-STHX) by means of computational fluid dynamics (CFD) method. The numerical results show that, under the same mass flow rate M and overall heat transfer rate Q_m, the average overall pressure drop △p_m of the CMSP-STHX is lower than that of conventional SG-STHX by 13% on average. Under the same overall pressure drop △p_m in the shell side, the overall heat transfer rate Q_m, of the CMSP-STHX is nearly 5.6% higher than that of SG-STHX and the mass flow rate in the CMSP-STHX is about 6.6% higher than that in the SG-STHX. The CMSP-STHX might be used to replace the SG-STHX in industrial applications to save energy, reduce cost and prolong the service life.
机译：已经发明了在外壳通道中具有连续的螺旋形挡板的组合的多通道外壳和管壳式热交换器（CMSP-STHX），以改善传热性能并简化制造过程。通过计算流体动力学（CFD）方法，将CMSP-STHX与具有分段挡板的常规管壳式换热器（SG-STHX）进行了比较。数值结果表明，在相同的质量流量M和总传热率Q_m的情况下，CMSP-STHX的平均总压降△p_m比常规SG-STHX降低平均13％。在相同的壳侧总压降△p_m下，CMSP-STHX的总传热率Q_m比SG-STHX高近5.6％，CMSP-STHX的质量流率约为6.6％高于SG-STHX。在工业应用中，CMSP-STHX可以用来代替SG-STHX，以节省能源，降低成本并延长使用寿命。

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