Plate heat exchangers (PHEs) play an important role in different technical fields, namely, in energetics, chemical industry, food industry, and others. To use PHE effectively, it is necessary to have correct data for pressure drop. Unfortunately, in open literature, a large difference among different authors occurs. In this work is shown that an essential portion of this difference lies in the choice of the typical length for the calculation of the friction coefficient. Care must be taken to consider the pressure drop of the distribution zone. A three-component model for hydraulic resistance of PHE in turbulent flow regime is proposed in this work. The proposed model shows good agreement with experimental data.

中文翻译：

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湍流条件下单相对流板式换热器的压降：实验与理论

板式换热器（PHE）在不同的技术领域中发挥着重要作用，即在能源，化学工业，食品工业等领域。为了有效地使用PHE，必须具有正确的压降数据。不幸的是，在开放文献中，不同作者之间出现了很大的差异。这项工作表明，这种差异的重要部分在于选择典型长度来计算摩擦系数。必须注意考虑分配区的压降。提出了在湍流状态下PHE的水力阻力的三成分模型。提出的模型与实验数据吻合良好。