Plate heat exchangers (PHE) are of primary importance for many technical applications. To use PHE effectively it is necessary to calculate the pressure drop correctly. Unfortunately, in open literature a large difference between the different authors occurs. As shown in an earlier work (Gusew and Stuke in Int J Chem Eng vol. 2019, 6) an essential portion of this difference lies in the pressure drop of the distribution zone. In this work new geometrical parameters are introduced to calculate the pressure drop of the distribution zone. The resulting correlations with new parameters include the pressure drop of both corrugated field and distribution zones. This new three-component model for hydraulic resistance show good agreement with experimental data for PHEs in turbulent flow regime. Furthermore, observed differences in data of other authors can be explained by the influence of the new introduced geometrical parameters of the distribution zone.

板式换热器 (PHE) 对许多技术应用都至关重要。为了有效地使用 PHE，必须正确计算压降。不幸的是，在公开文献中，不同作者之间存在很大差异。如早期工作（Gusew 和 Stuke 在 Int J Chem Eng vol. 2019, 6）中所示，这种差异的一个重要部分在于分布区的压降。在这项工作中，引入了新的几何参数来计算分布区的压降。由此产生的与新参数的相关性包括波纹区和分布区的压降。这种新的三分量水力阻力模型与湍流状态下 PHE 的实验数据非常吻合。此外，