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首页> 外文期刊>Forschung im Ingenieurwesen >A matrix calculation model for the simulation and fast calculation of the mean temperature difference of multi-pass cross-flow plate heat exchangers
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A matrix calculation model for the simulation and fast calculation of the mean temperature difference of multi-pass cross-flow plate heat exchangers

机译：用于多通道错流板式换热器平均温度差的仿真和快速计算的矩阵计算模型

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摘要

A fast calculation method for the mean temperature difference is presented for the design of multi-pass cross-flow plate heat exchangers. Within the individual areas of the plate heat exchanger, a pure cross-flow is obtained without cross-mixing. On the other hand, between the regions both streams are always cross-mixed due to redirection or mixing zones. The individual plate elements of a region are always uniformly fluid-supplied. The calculation method is based on a matrix simulation model for general circuit variants. In order to ensure the optimal possible mean temperature difference for various series of cross-flow plate heat exchangers, specific boundary conditions for the coupling of the regions are predetermined in advance. Next to different complex circuits, also the so-called cross-countercurrent circuit is obtained. A corresponding correction factor for the temperature difference is determined with reference to the temperature difference of the counter-flow. Basic circuit variants are compared and evaluated using this correction factor. The simulation model can be solved quickly and effectively for the circuits that are relevant in practice. In order to determine an optimal circuit, the calculation method can be implemented into the software for the thermal design of corresponding cross-flow heat exchangers.
机译：提出了一种多通道错流板式换热器设计的平均温差的快速计算方法。在板式换热器的各个区域内，获得了纯净的错流而没有交叉混合。另一方面，在区域之间，由于重定向或混合区域，两种流总是交叉混合。区域中的各个板元件始终均匀地供有流体。该计算方法基于通用电路变型的矩阵仿真模型。为了确保各种系列的错流板式热交换器的最佳可能的平均温差，预先确定用于区域耦合的特定边界条件。除了不同的复杂电路，还可以获得所谓的交叉逆流电路。参照逆流的温度差确定温度差的相应校正因子。使用此校正因子比较和评估基本电路变体。对于实际中相关的电路，可以快速有效地求解仿真模型。为了确定最佳回路，可以将计算方法实施到软件中，以进行相应的错流热交换器的热设计。

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  • 来源
    《Forschung im Ingenieurwesen》 |2017年第4期|357-369|共13页
  • 作者

    Moeller Torben; Strelow Olaf;

  • 作者单位

    GAM HEAT GmbH, Leiter Entwicklung Tech Warmeubertrager, Mittelstr 13, D-57339 Erndtebruck, Germany;

    Tech Hsch Mittelhessen, Inst Thermodynam Energieverfahrenstech & Syst Ana, Giessen, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
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