PRIHODA promotional corporate video

Microperforation Directioning

Fabric Tiles SquAireTex Swirl: These flat structures are intended for installations namely in lower ceilings. Use of fabric and special channeling pockets enable us to achieve the same or better technical parameters than traditional swirl diffusers and anemostats.

Small Fabric Nozzles – smoke test: Long throw textile nozzles can produce directional jets of air over long distances and/or with high heating temperature differences.


Function of Fabric Pockets: Fabric pockets avoid deflection of outgoing air from perforation. The solution is based on an interaction of two airflows of similar momentum. Airflow from the last hole in the row by use of the fabric pocket is directed in a particular angle that will compensate the deflection of airflow from perforation.



Large Directed nozzle: Like the smaller nozzles our large Fabric Nozzles are used for throwing air long distances usually in applications with high ceilings. These nozzles do not have to be mounted so that the air exits at 90o to the duct but can be made to throw the air at most any angle – the video here shows examples at 30o and 45o directions. This flexibility has huge benefits where one wants air directed to specific areas or aisles.


Large Adjustable nozzle: As above these large nozzles can throw air in most directions, however with these nozzles one can adjust them to any desired angle after installation. This is particularly useful if room layouts change or one moves the Fabric Duct system at a later date, or simply if one is not sure of the correct angle prior to ordering.


Advantage of microperforated fabric diffusers for intensive cooling: Our competitors use permeable material to deliver cold air at low velocities (the Fabric Duct on the left). Note how the air falls in a column below the Fabric duct, a possible cause for discomfort and a lack of distribution. Although our material is slightly permeable we use microperforations to deliver low velocity cold air (please see the Fabric Duct on the right). Because we can place these micro-perforations anywhere we choose on the Fabric Duct we can deliver supply air where we want, but still at very low velocities, avoiding the dumping action common with our competitors products. See how the air moves and diffuses through the room in comparison to the left hand duct.


Microperforations – Uniform Air Pattern: It is possible to create a variety of air patterns using our unique laser cut Micro-Perforation diffusers. Here we see Micro-Perforations placed only on the bottom part of the duct (they can be placed anywhere on the duct circumference). Here the Micro-Perforations provide and evenly distributed and diffuse air pattern at low velocity – especially important for cooling applications where drafts can create discomfort.


Microperforation Uniform – smoke test: Uniquely we possess the ability to actually provide a direction to our low velocity microperforation diffusers, Unlike standard permeable material we can place the micro perforations at angles on the duct circumference to encourage the air in different directions.


Membrane diffuser – smoke test: This combines two types of diffuser into one. The membrane flap is a lightweight non permeable material sewn all along the duct length. The membrane is attached to a two position motor. In heating mode the motor moves the membrane to cover the cooling diffusers located at the top of the duct, the supply air exits the heating perforations on the bottom of the duct. In cooling mode the motor moves the membrane to cover the heating perforations at the bottom of the duct and the cool supply air leaves the perforations at the top of the duct. The membrane allows two totally different diffusion styles in one duct.


Defrost Damper


Comparison of plastic and fabric nozzle