Eurovent: Consider the pressure difference

There are different pressures on the supply and extract side of a ventilation system – depending on the installed components and the arrangement of the fans. This becomes particularly clear in the plate heat exchanger, which is acted upon by both air streams and where two different pressures prevail at one location, separated only by a thin plate. The difference between these two pressures is called the differential pressure; it influences a possible leakage and may deform the plate due to the resulting surface force. This results in a change of the plate spacing and thus the pressure loss. The differential pressure for the respective plate heat exchanger must therefore be limited for the planning of the ventilation system and its trouble-free operation.