22 | INSTALLATION, OPERATION and MAINTENANCE MANUAL
Mixing Plates
To obtain optimum thermal and pressure drop performance while using a minimum
number of heat exchanger plates, plates of two or more corrugation angles may be
mixed within the same frame. This is available for many APV GPHE models.
Mixing plate angles results in flow passages that differ significantly in their flow
characteristics. This allows the GPHE design to be fine-tuned in a single or even
multiple pass arrangement to closely match to the thermal and pressure drop
requirements of the application. Examples of different plate angles are shown in Figure
10.
Soft plate Hard plate
(50 angle) (0 angle)
Thermally Thermally
short long
Figure 10: Plate angles
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