KE Direct Jet Nozzles Systems
High impulse cooling or heating with nozzles
The key difference between the KE-Inject System and KE-DireJet System is their ability to entrain room air. The KE-DireJet System is made of rows of conical nozzles. The conical nozzles limit the induction of room air around the individual air jet, whereby the velocity in the jet decreases relatively slowly compared to the KE-Inject System. As a result of this, both the throw length and thermal penetration length are extended considerably for the KE-DireJet System.
KE Fibertec is the only distributor of textile ducts that offers five different nozzle sizes: Ø12, Ø18, Ø24, Ø48 and Ø60 mm. The flexibility in the choice of nozzle size offers great benefits as the KE-DireJet System can then be used in virtually every type of premises that requires mixing ventilation, even in extremely large premises, such as high-bay warehouses or large sports halls. The nozzle size and flow model naturally depend on the requirements specification for the ventilation system, and KE Fibertec will obviously advise on the best choice of nozzle size and direction. Ducts are often used with different nozzle types and flow models in the same duct. This allows you to achieve the flow pattern and air intensity in the various zones exactly how you want.
KE Fibertec markets multiple types of KE-Inject Systems, with their characteristic patented hole design running along the duct’s longitudinal surface. The number of holes per metre is constant, regardless of the length of the duct. The only option for adapting the number of holes to the relevant volume of air is by having more or fewer rows of holes on the duct’s circumference. Consequently, KE Fibertec indicates the number rows of holes in a dimensioning context. This should then be understood as the total number of hole rows placed on the duct’s circumference, with the holes grouped in a particular design along the duct’s longitudinal surface.
The Ø12 mm nozzle is used where directional delivery is required in a room and comfort requirements are important. Each nozzle delivers 5 m3/h with a static pressure of 120 Pa. See datasheets 11 and 12 for further information.
The Ø18 mm nozzle is used where directional delivery is required and often in process-orientated solutions, in a room where relatively large throw lengths are required. Each nozzle delivers 11 m3/h with a static pressure of 120 Pa. See datasheets 11 and 13 for further information.
The Ø24 mm nozzle is used for directional delivery in a room with large throw lengths. Each nozzle delivers 20 m3/h with a static pressure of 120 Pa. See datasheets 11 and 14 for further information.
The Ø48 mm nozzle is used for directional delivery in a room with very large throw lengths. The ﬂexible nozzle can be turned 30° in any direction around the nozzle’s centreline. Each nozzle delivers 81 m3/h with a static pressure of 120 Pa. See datasheets 15 and 16 for further information.
The Ø60 mm nozzle is made up of the bottom of the Ø48 mm nozzle and is used for directional delivery in rooms with very large throw lengths. Each nozzle delivers 139 m3/hwith a static pressure of 120 Pa. See datasheets 15 and 17 for further information.