Swirl diffusers, Variable swirl diffusers Swirl diffusers

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1 IMP Klima, Variable swirl diffusers Swirl diffuser OD- Fixed grille For air supply or exhaust Recommended temperature difference between supplied and internal air in the room is between 0 to 0 K Low static pressure drop and low noise level Recommended installation height up to. m Diffuser plate should be lined with the ceiling in order to establish the ceiling effect Square and circular diffuser plate Diffuser plate attachment For square diffusers, central fastening OD-/K or fastening with four screws on the edges OD-/K can be selected. For circular diffusers, only the central fastening is provided. Diffusers are usually installed with the plenum box with side or top entry spigot. Plenum boxes with side or top inlet can be selected. If additional air flow regulation is required, the plenum box with the M volume control damper is recommended. St RAL 900 VENTILATING GRILLES, VENTILATING VALVES OD-/K OD-/R Dn Dz Dn CIRCULAR DIFFUSERS, SQUARE DIFFUSERS SWIRL DIFFUSERS, VARIABLE SWIRL DIFFUSERS Dz SLOT DIFFUSERS, ROUND DUCT DIFFUSERS UNITS A x A φ A Size Dn Dz AxA ФA A ef (m²) x x x x x

2 , Variable swirl diffusers IMP Klima OD-/K (square front plate). Plenum box. Inlet spigot. Dispersing plate (only for supply). Volume control damper (M). Traverse. Swirl diffuser OD-/K Size A H h H Фd ФD A Adapter VIII XXI A x A A x A A x A H OD-/R (round front plate). Plenum box. Inlet spigot. Dispersing plate (only for supply). Volume control damper (M). Traverse. Swirl diffuser OD-/R 7. Adapter H Size A H h H Фd ФD A Adapter VIII XI XXI XVII XVII D A D A Round plenum box. Plenum box. Inlet spigot. Suspension bracket. Volume control damper (M). Dispersing plate (only for supply). Swirl diffuser OD- φ d H φ d Size ФD ФD H H Фd H H φ D φ D φ D φ D Size ФD ФD H Фd

3 R Circular diffuser plate central fastening * K version is available only when ordering diffuser plate without the plenum box. When installing to the plenum box, diffuser plate is always central fastened K, R. ** IMP OK is always Klimawithout perforation. Fast selection diagram, Variable swirl diffusers SLO ROUND LLES, LVES UNITS 00 0 OD- - db(a) - db(a) 00 00/ Pa - Pa Q (m /h)

4 , Variable swirl diffusers IMP Klima Definition of symbols L A,B Q (m³/h) Air volume per diffuser x (m) Horizontal distance to wall H (m) Room height H (m) Ceiling to living zone distance L (m) Throw distance (L = H+ x) V L (m/s) Air speed on the throw distance L Δt z (K) Difference between room temperature and supply air temperature Δt L (K) Difference between room temperature and air flow temperature on distance L Δp t (Pa) Pressure drop L WA (db(a)) Sound power level V H (m/s) Air speed on distance H A, B (m) Distance between two diffusers (length and width) H Q t z V H t L Q t z x H L.8m V L t L Quick selection table: ΔT = -0K Size Q (m³/h) Q(l/s) H=m: v H (m/s) / H=.m: v H (m/s) / / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA (db(a)) H=m: v H (m/s) / / H=.m: v H (m/s) / L=m: v L (m/s) / L=.m: v L (m/s) Δp (Pa) L WA(dB(A)) H=m: v H (m/s) / / H=.m: v H (m/s) / / / L=m: v L (m/s) L=.m: v L (m/s) / Δp (Pa) / / L WA(dB(A)) H=m: v H (m/s) / / H=.m: v H (m/s) / / / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) / / L WA(dB(A)) H=m: v H / / H=.m: v H / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A))

5 IMP Klima, Variable swirl diffusers Quick selection table: ΔT = -K Size Q (m³/h) Q(l/s) H=m: v H (m/s) / H=.m: v H (m/s) / / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA (db(a)) H=m: v H (m/s) / / H=.m: v H (m/s) / / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A)) H=m: v H (m/s) / H=.m: v H (m/s) / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A)) H=m: v H (m/s) / H=.m: v H (m/s) / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) / L WA(dB(A)) H=m: v H H=.m: v H L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A)) Quick selection table: ΔT = 0K VENTILATING GRILLES, VENTILATING VALVES CIRCULAR DIFFUSERS, SQUARE DIFFUSERS SWIRL DIFFUSERS, VARIABLE SWIRL DIFFUSERS SLOT DIFFUSERS, ROUND DUCT DIFFUSERS UNITS Size Q (m³/h) Q(l/s) H=m: v H (m/s) / H=.m: v H (m/s) / / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA (db(a)) H=m: v H (m/s) / / H=.m: v H (m/s) / / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A)) H=m: v H (m/s) / H=.m: v H (m/s) / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A)) H=m: v H (m/s) / H=.m: v H (m/s) / L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) / L WA(dB(A)) H=m: v H H=.m: v H L=m: v L (m/s) L=.m: v L (m/s) Δp (Pa) L WA(dB(A))

6 , Variable swirl diffusers IMP Klima Example A = m B = m H = m Q = 80 m³/h H = H,8 H =. m V H = 0. m/s Δp = Pa L WA = db(a) 0D- size 00 B = m v H (m/s) H (m) 0, m/s 0,0 m/s 0, m/s 0, m/s 0, m/s 0,0 m/s 0, 0,9,,,0 m /h m /h m /h 80 m /h m /h,, B m v H (m/s) H (m) 0, m/s 0,0 m/s 0, m/s 0,m/s 0, m/s 0,0 m/s 0, 0,9,,,0 m /h m /h m /h 80 m /h m /h,, Static pressure drop and sound power level p (Pa) 0 0 L WA (db(a)) Q (m /h)

7 IMP Klima, Variable swirl diffusers 0D- size 0 B = m VENTILATING GRILLES, VENTILATING VALVES v H (m/s) 0, m/s 0,0 m/s 0, m/s 0, m/s 0, m/s 0,0m/s m /h m /h 0 m /h 90 m /h m /h CIRCULAR DIFFUSERS, SQUARE DIFFUSERS SWIRL DIFFUSERS, VARIABLE SWIRL DIFFUSERS 0, 0,9,,,0,, B m H (m) SLOT DIFFUSERS, ROUND DUCT DIFFUSERS m /h v H (m/s) 0,m/s 0,0 m/s 0, m/s 0, m/s 0, m/s 0,0m/s 0, 0,9,,,0 H (m) m /h 0 m /h 90 m /h m /h,, UNITS Static pressure drop and sound power level p (Pa) Q (m /h) L WA (db(a))

8 , Variable swirl diffusers IMP Klima 0D- size 00 B = m 0 m /h m /h v H (m/s) 0, m/s 0,0 m/s 0, m/s 0, m/s 0, m/s 0,0 m/s 0, 0,9,,,0 H (m) m /h m /h m /h,, B m v H (m/s) 0, m/s 0,0 m/s 0, m/s 0, m/s 0, m/s 0,0 m/s 0, 0,9,,,0 H (m) 0 m /h m /h m /h m /h m /h,, Static pressure drop and sound power level p (Pa) L WA (db(a)) Q (m /h)

9 IMP Klima, Variable swirl diffusers 0D- size 00 and B = m 900 m /h VENTILATING GRILLES, VENTILATING VALVES v H (m/s) 0, m/s 0,0 m/s 0, m/s 0, m/s 0, m/s 0,0 m/s 7 m /h m /h m /h 0 m /h CIRCULAR DIFFUSERS, SQUARE DIFFUSERS SWIRL DIFFUSERS, VARIABLE SWIRL DIFFUSERS 0, 0,9,,,0,, B m H (m) SLOT DIFFUSERS, ROUND DUCT DIFFUSERS 900 m /h v H (m/s) 0, m/s 0,0 m/s 0, m/s 0, m/s 7 m /h m /h m /h 0 m /h UNITS 0, m/s 0,0 m/s 0, 0,9,,,0 H (m),, Static pressure drop and sound power level p (Pa) L WA (db(a)) Q (m /h) 7