2/6.1/EN/1. High Induction. Variable / Constant Volume Swirl Diffuser Types HIVV HICV
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1 2/6.1/EN/1 High Induction Variable / Constant Volume Swirl Diffuser Types HIVV HICV
2 Contents Description Description... Specification Dimensions... HIVV-E Operation... Quick Selection Table... Technical Specification... Technical Data Size Model HIVV-E Variable Volume Electronic control Example... 7 Technical Data Size Order Codes... 8 Specification Text... 8 Order Example... 8 Flow pattern Description The newly developed HIVV/HICV range of high induction, variable and constant volume swirl diffusers have been designed to meet the most stringent requirements of new and refurbished commercial and industrial systems. This versatile range of diffusers are supplied complete with a very low acoustically designed plenum box and radial front face plate, which is easily installed in most plastered and inverted T type ceilings. s the plenum box is fitted with a side entry spigot the height required in the ceiling void can be substantially reduced. The side entry also ensures the direct fitting of flexible connections, thereby eliminating unrequired noise generating twist and bends in the 2 ducting. The high induction and radial distribution achieved by the diffusers, even at minimum air quantities in variable volume applications, ensures efficient air movement in the airconditioned zone by eliminating stratification of warm air and correct draft free distribution of colder air. s all moving parts are contained within the specially constructed plenum box, the noise generated in the process of varying the air quantity is absorbed within the plenum box. Connections between electronic master and sub units are accomplished with the use of uni-directional plug in cables, thus ensuring simple and correct installation of control and electrical connections.
3 Specification Dimensions HICV- Constant Volume These diffusers are supplied complete with plenum and side entry spigot. The performance may be adjusted after installation by setting the damper blade position through the face of the diffuser. HIVV-Variable Volume The variable volume diffusers have been designed for use in constant duct pressure systems, thereby requiring a form of pressure control in the duct system. HIVV- P Variable Volume Pneumatic Operation Can be supplied as direct or reverse acting to suit differing control systems (by others) and is complete with motor, electric heater (if required) and relay for electric heater (where required). The motor is driven by a pneumatic signal from the thermostat (by others) with a pressure range of 0-1,0 bar. These units are available as master or sub units. 0-1,0 R MOTOR RELY 220 V HETER Frame for flat ceilings N Frame for shadow line ceilings N 50 N 9 K H ød Size FrameType D H K N _ _
4 HIVV-E Operation HIVV- E Variable Volume Electronic Operation The electronically operated units are available as self or system controlled, with either 220 or 24 volt electrical systems. The self controlled unit is supplied complete with motor, heater (if required), RPC control card and temperature sensor. The RPC or Rate ided Proportional Controller ensures control of the air volume, heating and thus temperature of the airconditioned zones. The principal of Rate ided is the measurement of the rate of temperature change in degrees centigrade per minute and the direction of change which is then compared to the temperature set point. The temperature difference, rate of change and direction is then analysed and a signal generated to drive the motor in the required direction and travel length thus varying the air quantity. The functions are performed by the controller at 30 second intervals. The direction of the motor, which is energised for 0-7,5 seconds in one or both directions of travel, is determined by the amount and direction of temperature change. Hence although the Temperature Offset may be calling for the motor to open, the direction of temperature change and rate of change may reverse the motor direction. Fig. 1 Temperature control response curve Fig. 2 Volume control response curve + DEG C 100 % ± 0,3 DEG C SET POINT ± 0,3 DEG C UPPER LIMIT LOWER LIMIT - DEG C TIME 0 % TIME HIVV- E / 220 V HIVV- E / 24 V 220V RPC MOTOR 24V RPC MOTOR 220V HETER HETER 4
5 Technical Specification The advantage of this control principal is a smooth proportional control of air volume and thus temperature. The temperature sensor is fitted with a set point adjustment which may be accessible at the side of the plenum or it may be remotely mounted. The main features of this are as follows: The system controlled units are fitted with motor and heater (if required). These units may then be coupled to a control system via the room thermostats. The thermostat may be positioned either on the diffuser face plate or remotely on ceiling or wall. ) Proportional control of temperature and air volume ) Reduction in rate of temperature change C) Fast setting time after system activation D) Maintains control over wide range of thermal loading conditions E) Integrated diffuser and controller for ease of installation F) ll electronic components are solid state technology eliminating routine maintenance Supply voltage HIVV-E/ 24 V 24V +15% -10% 50 HZ HIVV-E/ 220 V 220V +15% -10% 50 HZ Heaters 220V 50 HZ Power consumption Motor 1,5 V RPC Controller V RPC Controller and Motor 1,75 V HIVV-E/ 24 V HIVV-E/ 220 V Power output 30 V 10 V Temperature parameters Set point range 18 deg C to 26 deg C ± 5% Factory set point 22 deg C ± 0,5 deg C HIVV- P Pneumatic control signal 0-1,0 bar Quick Selection Table Diffuser type HIVV Inlet dia. [mm] Pressure SP [Pa]. V max [m 3 /s] Throw* [m] NC** [d]. V min [m 3 /s] / / / / / / / / * Throw: Distance from diffuser to point where the jet velocity is reduced to 0,5 and m/s at max.-air volume respectively. ased on distance between two diffusers, see diagrams 3 and 8. Velocities in the occupied zone see diagrams 1, 2 and 6, 7. ** NC : Figures are determined from power level data re watt by deducting 8 d from each octave band. 5
6 Technical Data HIV V / HICV 500 Nomenclature. V in m 3 /s : Supply air volume per diffuser, in m : Spacing between two diffusers H 1 in m : Distance between ceiling and occupied zone v H1 in m/s : verage air velocity between two diffusers at distance from ceiling H 1 L in m : Horizontal + vertical distance (C + H 1 ) discharge to the wall v L in m/s : verage air velocity at wall t s in K : Temperature difference between supply air and room air t L in K : Difference between core and room temperature at distance L = /2 + H 1 or L = /2 + H 1 or L = C + H 1 p s in Pa : Static pressure drop (supply air) NC : Sound Pressure Level based on 8 d absorption H= 2,6...4,0m C L H 1 v 75 H1 1,80m t L 150 vṫ s L C v L t L 1 Terminal velocity between two diffusers in single row configuration or if 4,0 m H 1 = 1,0 1,2 1,6 2,0 m 0,40 3 Pressure drop and acoustic data v H1 in m /s Static Pressure p s in p a ,15 0,8 1,0 1,5 2,0 3,0 4,0 m Distance 2 Terminal velocity between two diffusers in multiple row configuration if = 3,0 m H1 = 1,0 1,2 1,6 2,0 m 15 0,02 0,03 0,04 0,05 0,07 0,10 0,15 Flow Rate in m 3 /s 4 Temperature quotient and terminal velocity at distance L = 1,2 1,6 2,0 3,0 m 0,18 0,16 v H1 in m /s 0,50 0,45 0,40 1,0 1,5 2,0 3,0 4,0 m Distance v L in m /s 0,70 0,60 0,50 0,40 0,14 0,12 0,10 0,08 0,06 0,05 0,04 1,0 1,5 2,0 3,0 4,0 m Distance L Temperature - Quotient t L t S 6
7 Technical Data HIV V / HICV 600 Example : Requirements 2 HIVV diffusers. V = 0,182 m 3 / s each = 2,0 m C = 1,0 m t = 8 k H 1 = 1,2 m Solution between 2 diffusers from diagram 5: v H1 = = 2,0 m m/s from diagram 7: p s NC = = 43 pa 33 from diagram 8: L = C + H 1 = 2,2 m = 2,0 m v L = m/s t L / t S = 0,081 t L = 8K x 0,081 = 0,6K 5 Terminal velocity between two diffusers in single row configuration or if 4,0 m H 1 = 1,0 1,2 1,6 2,0 m v H1 in m /s 7 Pressure drop and acoustic data Static Pressure p s in p a ,15 1,2 1,5 2,0 3,0 4,0 m Distance 6 Terminal velocity between two diffusers in multiple row configuration if = 3,0 m H1 = 1,0 1,2 1,6 2,0 m v H1 in m /s 0,15 1,5 2,0 3,0 4,0 m Distance 15 0,03 0,05 0,07 0,10 Flow Rate in m 3 /s 8 Temperature quotient and terminal velocity at distance L = 1,2 1,6 2,0 3,0 m v L in m /s 0,70 0,60 0,50 0,40 0,18 0,16 0,14 0,12 0,10 0,08 0,06 0,05 0,04 1,0 1,5 2,0 3,0 4,0 m Distance L Temperature - Quotient t L t S 7
8 Ordering Details Order Codes Variable Volume HIVV / / E / M / 220 V / 1500 / l Size 600 Frame type Diffuser Size Pneumatic Electronic Direct cting Reverse cting E D V I R Fitted to Diffuser Wall Mounted Temperature Offset Master Unit Sub Unit Power Supply M S 220 V 24 V 1 bar Heater Capacity (Maximum 3000 W) Constant Volume HICV / Size 600 Frame type Diffuser Size Specification Text Order Example : Supply and install as shown on the drawings and as Make: TROX detailed in the schedules, TROX type HIVV-E electronic Type : HIVV / / E / S / 24 V / 1500 HIGH INDUCTION, VRILE VOLUME SWIRL DIFFUSERS size 600. Diffusers to be a combination of self controlled Size 500 master and sub units as required, manufactured to suit exposed T type ceilings supplied complete with RPC control. ll units to include radial face plate, plenum box and unidirectional cabling. Construction & Finish ll HIVV diffuser plenum boxes are manufactured from mild steel treated and painted matt black. The diffuser face plate is manufactured from galvanised steel and is available in TROX standard colour finishes. 8
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