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首页> 外文会议>International Conference on Manufacturing Science and Technology >Numerical Determination of the LMTD Correction Factor for Shell-and-tube 1-2 Heat Exchangers
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Numerical Determination of the LMTD Correction Factor for Shell-and-tube 1-2 Heat Exchangers

机译：壳管1-2热交换器LMTD校正因子的数值测定

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This paper outlines a novel numerical methodology to compute the LMTD correction factor for a shell-and-tube heat exchangers. Although the presented methodology can be extended to other shell-and-tube heat exchangers, the analysis presented is this paper concerns the one shell pass and two tube pass configuration, namely 1-2 shell-and-tube heat exchanger. The correction factor is compute by means of an association of e-NTU and LMTD approaches proposed by Kays and London (1998). An analysis of the convergence of the solution provided by the numerical methodology is confronted against results from an analytical solution available in the literature to compute the LMTD correction factor for infinite number of baffles. Numerical results shows that, as the number of baffles is increased, the numerical solution approaches the analytical solution available in the literature. The presented numerical methodology allows the direct computation of the LMTD correction factor for a determined arrangement, giving a new perspective on the project and sizing of shell-and-tube heat exchangers, since typically the analytical solution is applied for all arrangements.
机译：本文概述了一种新颖的数值方法，用于计算壳管热交换器的LMTD校正因子。尽管所提出的方法可以扩展到其他壳管热交换器，但是本文介绍了一个壳牌通行证和两个管道配置，即1-2壳管热交换器。校正因子通过kays和伦敦（1998）提出的E-NTU和LMTD方法的关联计算。对由数值方法提供的解决方案的收敛性分析对来自文献中可用的分析解决方案的结果对抗，以计算无限数量挡板的LMTD校正因子。数值结果表明，随着挡板的数量增加，数值解决方案接近文献中可用的分析解决方案。所提出的数值方法允许直接计算确定的布置的LMTD校正因子，从而对壳管热交换器的项目和尺寸进行了新的视角，因为通常对所有装置施加分析解决方案。

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