Jet nozzle, type DW-N2 Swivel jet nozzle, type DW-V2 Twist nozzle, type DW-V2-...-DR

Transcription

1 , type DW-N Swivel jet nozzle, type DW-V Twist nozzle, type DW-V-...-DR DS 1 E 0.00/

2 and twist nozzle Preliminary remarks It is advisable to use nozzles to air-condition large spaces where the supply air is to be discharged from the space surrounding walls or from the parapet of a gallery. The supply air jet pattern depends on the jet velocity, the temperature difference between supply air and indoor air, and the discharge angle; in many cases the angle can be predetermined. Adjustable nozzles make it possible to adapt the jet discharge angle to the respective operating conditions. With varying cooling and heating loads it is advisable to use a motorized adjusting system. s are recommended where long throws are required while high acoustic requirements are to be met. The jet nozzle is available in nominal dimensions, in adjustable or non-adjustable design, for throws ranging from to 0 m. Twist nozzle Twist nozzles are recommended where small penetration depths are required for the supply air. The built-in twist element spreads out the air jet, thus considerably reducing its penetration depth. It is possible to combine twist nozzles with jet nozzles within one duct system. Giving due consideration to the design parameters it is possible to supply fresh air to large assembly halls, exhibition halls, airport terminals, shopping centres etc. using jet nozzles and even twist nozzles, in compliance with the comfort requirements. Nominal dimension Air volume flow rate Twist nozzle Air volume flow rate min max min max m /h m /h m /h m /h , type DW N, type DW V Twist nozzle, type DW V... DR mounted in the parapet of a gallery s mounted in two opposite walls combined with a twist nozzle, mounted in a wall Fig. : Examples of arrangement Construction design and function Fig. 1, left, shows the non-adjustable jet nozzle, type DW-N. It is made up of the nozzle body 1a, featuring optimized air flow pattern and sound performance, with a flange 1b on the air intake side. Fig. 1, middle, shows the swivel jet nozzle, type DW-V. Its main component is the nozzle 1 housed in the hemispheric casing. This nozzle, which is linked to a fastening flange, can swivel by ± around the horizontal swivel axis. It is also possible to alter the air discharge direction sideways since the fastening flange can be adjusted by ± in the vertical plane, which modifies the position of the swivel axis. The flange is concealed by a removable collar. As an option the swivel jet nozzle can be fitted with an electric servomotor (see page ) to ensure automatic swivelling. Fig. 1, right, shows the twist-type nozzle which incorporates a twist element in the nozzle intake. DS 1 E Bl. 0.00/ 1b 1a 1 Swivel range 1 Fig. 1: Construction design

3 and twist nozzle Specifications for layout and selection Fig. : Jet dispersion with jet nozzle Fig. : Jet dispersion with twist nozzle With throws ranging from to 0 m, and taking account of the requisite mounting height and minimum centre distance between the nozzles, the layout of jet nozzles for activity level I will be based on the following temperature differences between supply air and indoor air: K when cooling, + K when heating. Twist nozzle For short throws ranging from 1 to 1 m twist nozzles are suitable for the following mounting heights and minimum centre distances for activity level I as well as the following temperature differences between supply air and indoor air: K when cooling, + K when heating ) Required to comply with comfort requirements; at specifically high air flow rates it is necessary to keep to tmin and to stagger several nozzles We recommend limiting the maximum specific volume flow rate V& Sp max to 1 (00 ) per metre of nozzle row Discharge velocity u in m/s We recommend limiting the maximum specific volume flow rate V& Sp max to 1 (00 ) per metre of nozzle row and selecting low duct air velocities (. m/s) so as to take advantage of the excellent acoustic properties of the jet nozzles. The diagrams on pages and show the induction ratio, the jet deflection as well as the reduction of jet velocity and jet temperature in relation to the jet path. The discharge direction of the swivel jet nozzle can be readjusted when tuning the HC system. In the cooling mode it is advisable to have a jet angle of upwards Max. mounting height H in m Min. mounting height H in m Max. mounting height H in m Min. nozzle centre distance 1) tmin in m Nominal diameter Min. mounting height H in m Min. nozzle centre distance 1) tmin in m DS 1 E Bl Discharge velocity u in m/s Nominal diameter Throw W in m 0 0 Twist nozzle Throw W in m Fig. : Throws of jet nozzle and twist nozzle correlated with the discharge velocity

4 Connection types a) Non-adjustable jet nozzle, type DW-N b) Swivel jet nozzle, type DW-V, and twist nozzle, type DW-V-...-DR Fig. : Type DW-V with flange and collar for connection to plenum or duct Fig. : Type DW-N with flange for connection to plenum or duct Servomotors are optionally available for all connection types Fig. : Type DW-N Left: with push-in end and seal for pipes to DIN 1 (spiral-seam pipes); Right: with slip-on end for shaped parts to DIN 1 Fig. : Type DW-V Left: with push-in end and seal for pipes to DIN 1 (spiral-seam pipes); Right: with slip-on end for shaped parts to DIN 1 Instructions for mounting and adjusting the nozzles 1) 1. Connection to plenum or air duct a) Non-adjustable jet nozzle Fasten the nozzle to the plenum 1 or the air duct using the flange 1b. b) Swivel jet nozzle After removing the collar insert the jet nozzle into the duct wall cutout and fasten it with adjusting screws (see illustration on page ). By turning the fastening flange through maximum ± it is possible to alter the position of the swivel axis and thus to adjust the air discharge direction sideways. A scale with -degree division at the slot segments a facilitates accurate adjustment. Then secure the nozzle at the fastening points. The mounting surface should be level. 1) See key on page. Insertion into pipes to DIN 1, connection type R For connection type R both the swivel and the non-adjustable jet nozzles are fitted with a push-in end and a seal.. Connection to shaped parts to DIN 1, connection type F For connection type F both the swivel and the non-adjustable jet nozzles have a slip-on end matching shaped parts to DIN 1. Remark on connection types R and F: To adjust the discharge direction sideways with swivel jet nozzles provided for connection type R or F, turn the push-in or slip-on end of the nozzle. If the relevant end is fitted with a seal, a customary lubricant can be used to help turn the nozzle, in particular with large connection diameters. Once adjustment has been completed, the nozzle should be additionally secured by screws. DS 1 E Bl. 0.00

5 Examples of mounting of jet nozzle DW-N ø a 1 Connection type K for plenum or duct Connection side bevelled taking account of the predetermined discharge angle a. ø a Connection type R L Fig. : Type DW-N at Atrium Medisch Centrum, Heerlen/NL Supply air duct 1 located behind a wall; setting of predetermined discharge angle a through tilt of shaped part 1 in supply air duct 1 Examples of mounting of swivel jet nozzle DW-V and twist nozzle DW-V-...-DR ø Connection type K for plenum or duct ø Fig. : Type DW-N along the ceiling of an exhibition hall of Neue Messe Leipzig ø DS 1 E Bl Connection type F, to slip onto shaped parts, shown with bend Connection type R to push into a pipe Fig. 1: Type DW-V in a library at Maastricht/NL L

6 Dimensions of DW-N, DW-V and DW-V-...-DR 1 Connection to a plenum Type DW N K Connection to a plenum Type DW V K 1 Hemisphere ød-v ød-n ød-n ød-v A 1a 1 1b Swivel range H 1 1 Connection to a pipe Type DW N R L M A min H max H H max H H 1 ø D-N 1a Connection to a pipe Type DW V R ød-v 1 Swivel range Hemisphere ød-v ød-n H H Connection to a shaped part Type DW N F Connection to a shaped part Type DW V F ød-v (inside) 1 a H H 1 H H Schwenkbereich Swivel range Hemisphere ød-v H 1 Key for all pages 1 Nozzle 1a Nozzle body 1b Flange Hemisphere Fastening flange a Slot segment ) b Brush seal c Flange seal Swivel axis Collar 1a H Adjusting screw ) Scale of degrees ) Fastening point ) Push-in end Slip-on end Electric servomotor 1 Plenum 1 Connection pipe 1 Shaped part 1 Locking screw Twist element b c 1 Section B - B B B D a H H Schwenkbereich View A: Collar removed Non-adjustable jet nozzle Swivel jet nozzle and twist nozzle ) Size ød-n 1) ød-n ød-n ød-n H H1 GR,F ød ød-v GK kg ød-v ød-v ød-v H max H max H H Amin LM ) G ) mm mm mm mm mm mm kg mm mm mm mm mm mm mm mm mm mm mm kg DS 1 E Bl. 0.00/ 1) Wall or duct cutout ) Only for connection to a plenum ) Weight without motor; motor weight = 0. kg ) Twist nozzle available in 0 and over ) For Landis & Staefa motor of type GDB1 /GLB1 not considering the connection cable

7 Layout sheet for type DW-N Discharge velocity u in m/s Note: The diagram values for sound power level apply for connection type K to a plenum. With connection type R (to a straight pipe) or F, the sound power level is 1 db(a) higher, and even db(a) higher with an upstream pipe bend; see mounting examples on page. The pressure loss values apply for connection types K, R and F as well as with upstream pipe bend Throw Winm 0 Sound power level of type DW-N Sound power level LW in db ref. Nozzle volume Discharge W flow rate velocity Octave band centre frequency LWA in Hz m /h m/s db(a) K K DS 1 E Bl Throw W in m Sound power level L in db(a) ref. -1W WA Total pressure loss p in Pa t V = Throw W in m min Sound power level L in db(a) ref. -1W WA Total pressure loss p in Pa t

8 Layout sheet for type DW-V Note: The diagram values for sound power level apply for connection type K to a plenum at a nozzle angle of inclination = 0. The larger the angle of inclination, the higher the sound power level, e.g.: = 0 +1 db(a) = + db(a) With connection type R to a straight pipe with L or connection type F, the sound power level is 1 db(a) higher, and even db(a) higher with an upstream pipe bend; see mounting examples on page. The pressure loss values apply for connection types K, R and F, and a nozzle angle of inclination = 0 to. With an upstream pipe bend these values are to be raised by %. Discharge velocity u in m/s Throw Winm 0 Layout example for connection to a plenum, without servomotor: 1 Supply air volume flow rate V = Requisite throw W = 0 m Angle of inclination = 0 Max. perm. sound power level LWA = db(a) ref. -1 W From diagram: Nominal size: = selected Volume flow rate = Sound power level LWA = 0 db(a) ref. -1 Wat 0 LWA = 1 db(a) ref. -1 W at 0 Total pressure loss pt 0 Pa Number Z = units [from 1 : ] Discharge velocity u =, m/s Nozzle model without servomotor with servomotor Also see above Note Throw W in m Nozzle model without servomotor with servomotor Also see above Note 0 0 Sound power level L in db(a) ref. -1W WA Total pressure loss p in Pa Nozzle model without servomotor with servomotor Also see above Note t 0 00 DS 1 E Bl V min = Throw W in m 0 0 Nozzle model with and without servomotor Also see above Note Sound power level L in db(a) ref. -1W WA Total pressure loss p t in Pa

9 Sound power level of type DW-V Angle of inclination Nozzle volume flow rate Discharge velocity Sound power level LW in db ref. -1 W LWA Octave band centre frequency in Hz LWA Octave band centre frequency in Hz DS 1 E Bl m /h m/s db(a) K K K db(a) K K K 0 Without motor With motor 1) Without motor With motor 1) Without motor With motor 1) Without and with motor 1) Without and with motor 1) Without and with motor 1) Sound power level Thanks to its excellent acoustic properties the swivel jet nozzle is most suitable for use in large spaces with high acoustic requirements such as concert halls, theatres, conference rooms, museums etc. The sound power levels listed here apply for connection type K to a plenum. With connection type R to a straight pipe with L or connection type F, the sound power level is 1 db(a) higher, and even db(a) higher with an upstream pipe bend; see mounting examples on page. 1) Motor running noise < db(a)

10 0 Induction ratio Jet volume flow rate/supply air volume flow rate V/ Jet path L in m Induction ratio Example: Size Jet path L = m From graph: Induction ratio Jet/Supply air volume flow rate V/ =0 i.e. admixture of -fold indoor air volume flow rate after m jet path Temperature difference supply air/indoor air ZU RL =0K Jet deflection Jet path L=m ZL-RL for heating and cooling (hence no plus/minus sign) Jet deflection y in m +y Heating mode y Cooling mode L DS 1 E Bl Nozzle volume flow rate V A Example: Size Nozzle volume flow rate = Temperature difference supply air/indoor air ZL-RL = + K (Heating) From graph: Jet path L = m Jet deflection y +1.1 m after m jet path

11 Reduction of jet velocity 1).0 Reduction of jet temperature.0 Jet velocity uinm/s Jet path L=m Temperature difference air jet/indoor air in K STR RL Jet path L =m DS 1 E Bl Nozzle volume flow rate V A Example: Size Nozzle volume flow rate = (u0 =. m/s) Jet path L = 0 m From graph: Reduction of discharge velocity u0 =. m/s to jet velocity u = 0. m/s after 0 m jet path Temperature difference supply air/indoor air in K Example: Size Temperature difference supply air/indoor air ZL-RL = K Jet path L = 0 m ZL RL From graph: Reduction of temperature difference ZL-RL =Kto Str-RL = 0. K after 0 m jet path 1) Jet velocity in the jet axis at the respective points of observation on the jet paths

12 Twist nozzle Layout sheet and sound power level, type DW-V-...-DR Discharge velocity u in m/s Throw W in m ThrowWinm Sound power level L in db(a) ref. -1W WA Total pressure loss p t in Pa Layout example: 1 Supply air volume flow rate V = 1 Maximum throw W = m Max. perm. sound power level LWA = db(a) ref. -1 W From graph: Nominal size = 00 selected Volume flow rate = Sound power level LWA db(a) ref. -1 W Total pressure loss pt Pa Number Z = 0 units [from 1 : ] Discharge velocity u =. m/s Sound power level of type DW-V-...-DR Size Nozzle volume flow rate Total Sound power level LW in db ref. Discharge W pressure velocity LWA loss Octave band centre frequency in Hz m /h m/s Pa db(a) K K K DS 1 E Bl / 1

13 and twist nozzle Fig. 1: Type DW-N Fig. 1: Type DW-V Fig. 1: Type DW-V-...-DR Fig. : Type DW-V with electric servomotor DS 1 E Bl / Features at a glance General features Installation in the wall of a plenum or rectangular duct Connection to pipes to DIN 1, with seal Connection to shaped parts to DIN 1, with slip-on end Swivel jet nozzle with concealed fastening screws Hose connection for manual adjustment available on request Swivel jet nozzle also available with electric servomotor Material: Nozzle: aluminium Slip-on and push-in ends: galvanized sheet metal Twist element: black-painted sheet metal Colour: aluminium in natural colour or painted to RAL Unobtrusive placement possible, e.g. behind a facing s Throws of 0m Available in sizes for volume flow rates up to ( m /h) Very low sound power level Low pressure loss, swivel nozzle: = 1. non-adjustable nozzle: = 1.0 related to discharge velocity Twist nozzles Throws of 1 1m Available in sizes for volume flow rates up to (1 0 m /h) Type code DW _ _ Function / Kind Size 0, 0,,, 00, 0 Function / Kind V = swivel N = non-adjustable = nd generation Connection type Adjustment K = to plenum M = manual R = to pipe E = by electric servomotor F = to shaped part Option DR = with twist element 1) Examples, non-adjustable, size 0, for pipe connection Type DW N 0 R Swivel jet nozzle, size 0, for connection to a plenum, adjustment by electric servomotor Type DW V 0 K E Twist nozzle, swivel design, size 0, for connection to a shaped part, with manual adjustment Type Size Connection type Adjustment Option 1) DW V 0 F M DR 1) Available for swivel jet nozzle in 0 up to 0; for non-adjustable nozzle contact us! 1

14 and twist nozzle Tender texts, type DW-N 1)... units Non-adjustable jet nozzle for air distribution in large spaces, with curved intake featuring good aerodynamic and acoustic properties. Connection type K with fastening flange for connection to plenum or air duct. Connection type R with push-in end for insertion into a pipe, with seal. Connection type F with slip-on end for shaped parts. Technical data: Throw:... m Air volume flow rate:... (m /h) Size:... Perm. sound power level:... db(a) ref. -1 W Material: Nozzle: aluminium Push-in/Slip-on end: galvanized sheet metal Colour of visible nozzle parts: Natural aluminium colour Painting to RAL... Make: Type: 1) Available with twist element on request ) Available in 0 up to 0 KRANTZ KOMPONENTEN DW N Swivel jet nozzle, type DW-V, Twist nozzle, type DW-V-...-DR... units Swivel jet nozzle with curved intake featuring good aerodynamic and acoustic properties, housed in a hemispheric casing with opposite swivel bearings, swivel range ±, jet nozzle with large jet penetration depth for air distribution in large spaces, discharge direction adjustable in both the horizontal and the vertical planes, twist nozzle ) with small jet penetration depth for air distribution in narrow spaces, with built-in twist element, incorporating: a fastening flange to accommodate the hemisphere and the nozzle, turnable within slot segments to adjust the required discharge direction; a scale with ten-degree division helps adjust the discharge direction accurately when tuning the system. Connection type K with fastening flange for connection to plenum or air duct, inclusive of collar to conceal the fastening screws. Connection type R with push-in end for insertion into a pipe, with seal. Connection type F with slip-on end for shaped parts. Adjustment of throw manual. by electric servomotor. Option with twist element ), black-painted Technical data: Throw:... m Air volume flow rate:... (m /h) Size:... Perm. sound power level:... db(a) ref. -1 W Material: Nozzle: aluminium Push-in/Slip-on end: galvanized sheet metal Colour of visible nozzle parts: Natural aluminium colour Painting to RAL... Make: KRANTZ KOMPONENTEN Type: DW V DS 1 E Bl / Subject to technical alterations! Caverion Deutschland GmbH Krantz Komponenten Uersfeld, 0 Aachen, Germany Phone: , Fax: info@krantz.de,

15 , Swivel jet nozzle, Twist nozzle Swivel jet nozzle Twist nozzle Type code DW - Function / Kind Size Option Adjustment Surface finish Accessories Option K = Connection to plenum (duct wall) F = for slipping onto shaped part R = for pushing into circular duct B = Collar for connection to flexible duct Adjustment (DW-V only) MA = manual E E E E E E = Siemens servomotor, 0- V modulation, stroke drive type GDB1.E = Siemens servomotor, -point type, V, stroke drive type GDB.E = Siemens servomotor, -point type, 0 V, stroke drive type GDB1.E = Siemens servomotor, 0- V modulation, stroke drive type GLB1.E = Siemens servomotor, -point type, V, stroke drive type GLB.E = Siemens servomotor, -point type, 0 V, stroke drive type GLB1.E T1 = Thermostatic adjusting unit, 0- C Surface finish 0 = No coating. = Face painted to RAL. Accessories (DW-V only) O = none DR = with twist element DS 1 Appendix 0.00 Function / Kind N = non-adjustable V = swivel Size 0 = 0 = 0 = 0 00 = 00 = 0 = 0 Subject to technical alteration. Caverion Deutschland GmbH Krantz Komponenten Uersfeld, 0 Aachen, Germany Phone: , Fax: info@krantz.de,