Air Socks, or "textile diffusers" as they are technically
known, have been around for more years than people would
believe and yet still it is new to many people in our
industry. One early record of air socks being used is in 1955 for a
cotton mill in Germany.
People who are aware of air socks normally only associated them
with the food Industry and sometimes the textile Industry.
Although they are two classic applications, there are many
more. By means of strategically-positioned nozzles or holes
in specially selected materials, for which the combinations
and permutations are endless, virtually the whole spectrum of
air distribution requirements can be met.
Air socks have the ability to create a uniform air
distribution throughout the room by virtue of the fact that the
entire length of the duct is used for discharging the supply
air into the conditioned space, this being impractical or
very expensive for many conventional rigid duct
The exception to this is where the air socks maybe used for displacement
ventilation. Here, smaller air volumes can be used with
larger temperature differentials dropping the supply air into
the occupied zone away from room occupants and then push the
warm air to the extract grilles. Displacement ventilation is
very efficient for applications where there are particularly
high heat loads such as in TV studios, computer suites or
In such applications, by the very nature of the principles,
the temperature across the area will have a wider band of
temperatures and typically there will be a blanket of warm
air just below the ceiling; the ceiling being where the
extract grilles are normally to be positioned.