What is the difference between the corrugated herringbone and the horizontal corrugation on the plate heat exchanger

To measure the performance of a plate heat exchanger, when the raw materials are the same, it is mainly judged from three aspects: heat transfer efficiency, fluid resistance, and pressure bearing capacity.

This article takes the two main types of plates, namely herringbone corrugated board and horizontal corrugated board, as examples to illustrate.

Generally speaking, herringbone corrugated plates have high heat transfer efficiency, large fluid resistance and good pressure bearing capacity. Compared with herringbone corrugated plates, horizontal corrugated plates have lower heat transfer efficiency and lower fluid resistance.

Pressure capacity is also slightly lower.

The reason for the high heat transfer efficiency of the herringbone corrugated plates and the large reduction in fluid resistance is that the cross-sectional changes of the flow passages between the plates are very complicated, forming a complex network of changeable flow, which is easy to induce turbulence, and the fluid flows in the changeable flow passage (flow

Repeated expansion and contraction of the channel will consume more energy; on the contrary, the flow channel of the flat corrugated plate is similar to a sinusoidal curve, so the heat transfer coefficient and fluid resistance drop are lower.

Herringbone angle has obvious influence on heat transfer efficiency and fluid resistance.

The herringbone angle is large, the heat exchange efficiency is high, and the fluid resistance is high. On the contrary, the heat exchange efficiency and fluid resistance are small. This is the same shape and size of the gasket that appears now, only the corrugated shape on the plate is different.

From the pressure-bearing performance point of view, after two adjacent plates of the herringbone corrugated plate are combined upside down, the corrugations are in contact with each other, and the fulcrums are many and evenly distributed, which has a good ability to withstand pressure differences.

The fulcrums of the horizontal and straight ripples are sparse and cannot withstand excessive pressure differences.

These are the conclusions drawn through the combination of continuous experiments and actual cases. How important is it to choose a senior engineer team with R&D capabilities and 20 years of industry experience. Qingdao RPT integrates R&D and production.

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