What is mixing ventilation?
Mixing ventilation is characterised by the fact that air
is delivered at a high velocity outside the occupied zone.
The high air velocity rate in the air jet will generate excess
pressure, resulting in an inflow and entrainment of room air
towards the air jet supplied. During the first air flow cycle the
air velocity will be high, but as the quantity of room air that
becomes mixed increases, the air velocity will decrease.
If the system has been dimensioned properly the delivered air
volume will be completely mixed with the room air before it reaches
the occupied zone and the air velocity rate has dropped to the
desired level, depending on the room category.
In a mixing ventilated room air velocity, air temperatures and
humidity will be distributed identically and in theory the air
quality will be the same everywhere in the room.