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Jet nozzles

Jet nozzles
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Description 2Preliminary Selection 3Construction׷Dimensions 4Material Installation 5Installation ׷ Assembly 6Normenclature 7Selection Method 8Aerodynamic Data 9Acoustic Data 11Order Details 12 > cold airwarm air Jet nozzles are used for preference where the supply air from thediffuser has to travel a large distance to the occupied zone.This is the case in large rooms (halls, assembly rooms etc.),particularly when the distribution of air via ceiling diffusers is not possible or not practical. Here jet diffusers are arranged in the side wall areas. When the temperature difference between the...

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Materials Installation > The discharge nozzle and face cover ring are in aluminium (natural finish). The mounting for the eyeball is with two plastic rings colour white RAL 9010. Temperature resistant up to max. Trox jet nozzles are suitable for mounting on rectangular orcircular ducts. With both types of connection, there is a circular undrilled flange which can be used for either screw or rivet fixing, by others. A sealing strip should preferably be fitted first. A spigot is provided for direct connection to spiral or flexible circular ducts. The spigot diameter accepts standard circular...

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Ain m:Horizontal distance from nozzles to theairstream collision pointBin m:Spacing distance between two nozzles in a row Hin m:Nozzle installation height above occupied zone H > K in m/s:Air velocity in ductv- > L in m/s:Mean air stream velocityv- > H1 in m/s:Time average air velocity enteringoccupied zone > 1 in m:Height of collision point of two air streams aboveoccupied zoneH t > Z in K:Temperature difference between supply air and room air > 2 in m:Height of collision point of two air streams above t > L in K:Temperature difference between core and room airat distance L mounting...

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= 30 Data given:2 nozzles are to be fitted at a spacing of 20 m (A = 10 m) and at aheight of H = 5 m above the occupied zone, discharging towards each other.The hall is very high, so free jet streams can be assumed.For cooling, for each nozzle Vз > K L ==11.5 m A > cos K H > 2 = tan > K A = 5.8 m from diagram 1: ׃ > L = 1.2 m/s from diagram 2:y= 0.72 m > K = 150 l/s with H > 1 = H + H > 2 y = 5 + 5.8 ֖ 0.72 = 10.1 m t > K =8K and for heating, Vַ > W = 150 l/s with from diagram 3: > H1 0.07 m/sWarm air t > W = +4K.A motorised swivel movement is required for the nozzles. For theheating phase,...

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V m 3 /h =V׷ l/s x 3.6 Size Volume flow in l/s > Air Stream Deflection t > z is + for warm airand ǖ for cold air.Air stream deflection yis upwards for warm air and downwards for cold air. > V m 3 /h =V׷ l/s x 3.6 Air stream deflection y in m in l/s Distance L in m > Volume flow Size >

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