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 systems.
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 printing shops.
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.