6. jet diffuser

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  • 7/27/2019 6. Jet Diffuser

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    AdjustablePatternThrow JetDiffuserIdentification* NF/LAGiJD

    EEoo

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    11III

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    1li---t-t i it i ii l li l lL -IL_ii1tltll1

    140mm(C)150mm(B) )290mm(D) N-_4-''---12a

    Characteristic* Constructionn AluminiumFinishedStandard* ExposedFaces:Matt White FinishedColourAccessories* OpposedBladeDamper,NeckAdaptor

    P R O D U C T N F O R M A T I O N

    r !!of ,

    Designedo provide operationat high air quantities.JetDiffirser suitable or air-conditioningor ventilating largearease. :- theatres,auditoriums,lobbies,sportcentres,ndustrialpurposes nd entertainment leas.Centreconecanbe adjustedo suitvarious equiredair throw patterns.

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    ,ffiC*{F" .ffi NAM FOONG (M) SDNBIID (8070-T)ffi Jet DiffuserCategory NeckSize

    NeckVelocitylm/slFlowlvsl PressureDroptPal

    Throw(0.25mls)tm l NRSoundPowerLevel.dB re 1E-12WOctave Band Centre Frequency Ez)t2s 250 500 1000 2000 4000 8000

    A l50mmDiameter

    3.5 62 ZJ 6 8 34,3 29.s 22.1 t7 .8 8. 44 7 l 30 8 t2 37 .1 33.0 25.8 21.7 r3. 4.8 3.04.5 80 3 t l0 t 5 39.5 36. 29.1 25.1 17.2 9.0 6.0) 88 44 l l l 8 41.7 38.9 32.0 28.2 20.9 12.7 8.65 .5 97 ) J t2 2 l 43.6 41.4 34.6 31 . 0 24.3 16. I 1 . 06 106 6 l t4 z5 45.4 43.7 37.0 33.s 27.4 19. 13.26.5 1 1 5 7 1 l 5 26 47 .1 45.8 39.3 35.8 30.2 21.9 15.2124 8 l t6 28 48.6 47.8 4r.3 38.0 32.8 24.6 l 7 . l8 142 103 l 7 3Z 5t.4 5 1 . 3 45.0 4 1 . 8 5 t . ) 29.3 20.s9 159 128 t 9 35 53 .8 54.4 48.3 45.3 41.7 33.4 23.4l0 177 154 2 l 38 56.0 57 .1 st.2 48.3 45.4 37.1 26.1l l 195 183 z) 42 57.9 59.7 53.8 5 t . l 48.8 40.5 28.5

    Category NeckSizeNeckVelocitylm/sl

    Flowlysl PressureDroplPal

    Throw(0.25mls)Im l

    NRSoundPowerLevel,dB re lE-12WOctaveBand CentreFrequency IIz)

    125 250 500 1000 2000 4000 8000

    B 200mmDiameter

    J 94 t 8 6 9 35.2 28.4 22.1 19 .5 8.7J . ) 1 1 0 23 8 T4 38.4 32.4 26.3 23.9 t4.2 6 . 14 125 30 0 l 8 4 t . l 35 .9 30.0 27.8 18 .9 10.9 6. 94.5 l4 l J I 2 21 43.6 39.0 J J . J 31.2 23 . 1 15.0 9.85 157 44 4 24 45.7 4 1 . 8 36.2 34.3 26.8 t8.7 t2.s).) t72 53 5 27 47.7 44.3 38.8 37 .1 30. 22.r t4.96 188 6 l 6 30 49.5 46.6 41.2 39.6 J ) . 2 2s.2 17.12r9 8 l 9 34 52.7 50.7 45.5 44.1 38.7 30.6 21.08 251 103 2 l 38 55.4 54.2 49.2 48.0 43.4 35.3 24.39 282 128 23 4 1 57.8 57.3 52.5 51.4 47.5 39.4 27.31 0 313 t54 26 44 60.0 60.0 55.4 54.4 5 1 . 3 43.2 29.9l l 34s 18 3 28 47 62.0 62.6 58.0 57.2 54.6 46.5 32.3

    Category NeckSizeNeckVelocityIm/sI

    Flowlvsl PressureDroplPal

    Throw(0.25mls)Iml

    NRSoundPowerLevel,dB re 1E-12WOctaveBand CentreFrequency Hz)

    125 250 s00 1000 2000 4000 8000

    C 25OmmDiameter

    J 148 l 8 8 t4 38 .4 30.7 25.4 24.3 t3.43 .5 172 z5 l l t 9 41.6 34.7 29.7 28.8 18 .8 10.9 6.64 t97 30 l 3 ZJ 44.3 38.2 33.4 32.7 23.s 15.6 9. 94. 5 222 3 t l4 26 46 .8 41.3 36.6 36.1 27.7 19.8 12.9) 246 44 l 6 29 48.9 44.1 Jv . ) 39.2 31.4 23.5 15.6).) 271 53 t7 )z 50.9 46.6 42.2 41.9 34.8 26.9 18.06 296 6 l t9 34 52.7 48.9 44.6 44.4 37.8 29.9 20.r6. 5 320 7 l 20 3 t 54.3 5 . 0 46.8 46.8 40.7 32.7 22.2345 8 l 22 39 55.9 53.0 48.8 48.9 43.3 3s.4 24.07.5 370 92 23 4 l 57.3 54.8 50.7 50.9 45.7 37.8 2s.88 394 103 25 43 58.6 56.5 52.5 52.8 48.0 40.1 27.48.5 419 1 1 5 26 45 s9.9 58. 54.2 54.6 50. 42.2 28.9

    Category NeckSizeNeckVelocityIm/sl

    Flowlvsl

    PressureDroplPalThrow(0.25mls)

    lmlNR SoundPowerLevel,dB

    re 1E-12WOctaveBand CentreFrequency IIz)lzs 250 s00 1000 2000 4000 8000

    D 300mmDiameter

    2.5 17 7 t3 8 1 3 37.2 27.7 23.0 22.9 10.63 212 t 8 l 0 1 8 4 1 . 0 32.5 28.0 28.2 17.1 9. 3 5 . 13.5 248 z) t2 z) 44.1 36.6 32.3 32.7 22.5 14.7 9. 04 283 30 t4 27 46.9 40. 36.0 36.5 27.2 19.4 12.44.5 3 1 8 J I 1 6 30 49.3 43.2 39.3 40.0 31.4 23.6 1 5 . 3) 354 44 l 8 J J 51 . 5 4s.9 42.2 43.0 35. 27.3 18.05.5 389 53 20 36 53.4 48.5 44.8 45.8 38.5 30.7 20.46 425 6 l 2 l 38 55.2 50.7 47.2 48.3 41.5 33.7 22.66.5 460 7 1 23 4 l s6.9 s2 .8 49.4 50.6 44.4 36.6 24.67 495 8 l 25 43 58.4 54.8 5 1 . 5 52.8 47.0 39.2 26.5

    t . ) 5 3 1 92 26 45 59.8 s6.6 53.4 54.8 49.4 41.6 28.28 566 10 3 28 47 61.2 58.3 5s.2 56.7 51.7 43.9 29.8

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    -ffi-.#-;wt#E tffi- NAM FOONG (M) SDN BHD (8070_T)ffi Jet DiffuserCategory NeckSize

    NeckVelocity

    lm/slFlowIVS]

    PressureDropIPalThrow(0.25m/s)tm l NR

    Sound Power Level, dB re lE-l2WOctave Band Centre Frequency (Hz)125 2s0 500 1000 2000 4000 8000

    E 375mmDiameter

    2 220 8 1 l 35 .8 24.1 20.1 21.2 7. 32.2s 248 t 1 9 l 5 38.2 27.2 24.6 tt.4 3 .82.5 276 l 3 0 l 8 40.3 30.0 26.3 27.6 1 5 . 7 .5 J . )J 331 l 8 z 23 44.1 34.8 31 . 3 32.9 21.6 14 .0 8 . 1J . ) 38 6 z3 5 27 47.3 38.8 35 .6 37.4 27.0 t9.4 t2 .04 441 30 3 1 50.0 42.3 39.3 41.3 J I . T 24.1 t5.44. 5 496 J I 9 J ) s2.5 45.4 42.s 44.7 35.9 28.3 18.35 5 51 44 z l 38 54.6 48.2 4s.4 47.8 39.6 32.0 2 1 . 05.5 606 53 22 4 1 56.6 50.7 48. 50.5 43.0 J ) . J 23.46 661 6 1 24 43 58.4 53.0 50.5 53. 46.1 38.4 2s.66. 5 71 6 7 l 26 45 60.0 5 5 . 1 52.7 55.4 48.9 41.2 27.67 772 8 1 28 48 61.6 57.0 54.7 51.5 s .5 43.8 29.5

    Category NeckSizeNeck

    VelocityIm/sl

    Flowtvsl PressureDropIPalThrow(0.25mls)

    [m l NRSoundPowerLevel.dB re lE-l2WOctaveBandCentreFrequency IIz)r2s 2s0 s00 1000 2000 4000 8000

    F 450rnmDiameter

    1 . 5 239 5 5 32.4 18.4 1 4 . 8 16.71 .75 279 7 l l 35.6 22.4 1 9 . 1 21.2 6. 3L 3 1 8 8 9 l 5 38.4 26.0 22.8 2s .1 1 1 . 0 J . )2.2s 35 8 l l l t t 9 40.8 29.1 26.0 28.s t5.2 7. 7 3.42.5 39 8 1 3 t2 22 43.0 3 1 . 8 29.0 31.6 18.9 rt.4 6. 0J 478 1 8 t4 27 46.7 36.6 34.0 36.9 2s.3 17.8 10.63.5 557 z3 t 6 3 l 49.9 40.7 38.3 41.3 30.8 14.54 63 7 30 t 9 J ) 52.6 44.2 41.9 4s.2 35.5 28.0 17.84.5 71 6 .3 I 21 39 5 5 . 1 47.3 4s.2 48,6 39.7 32.1 20.85 796 44 z) 42 s7.2 50.1 48.1 st.7 43.4 3s.9 23.s).) 876 53 25 44 59.2 s2.6 50.8 54.5 46.7 39.2 2s.96 955 6 1 27 47 6 1 . 0 54.9 53.2 57.0 49.8 42.3 28.1

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    ffi NAM ooNGM)sDNBHD8070-r)

    PERFORMANCE NOTESo Units are estedaccordance ith the Air Diffusion Council (USA) EquipmentTestCode 1062 GRD-84. Measurements ere taken n generalaccordancewith the following standards-

    ACOUSTICS. InternationalStandard SO 3741 Clause 8.3 (Method 11) "Acoustics' . Determination f SoundPowerLevelsof Noise Sources PrecisionMethodsfor Broad-BandSourcesn Reverberation ooms".AIRFLOWAir DiffusionCouncil USA)Equipment estCode1062:GRD-84.THROW AND STATIC PRESSUREDROPAir DiffusionCouncil USA) Equipment estCode1062: GRD-84.

    TEST SBT UP AND PROCEDUREReverberation est Room has a volume of l70m'hut beenqualified n accordancewith the proceduresn ISO 3741 or determinationof soundpower in octavebandswith CentreFrequenciesrom 125Hz to 8000Hz.The Unitsunder estwere setup in theAir Distribution(Reverberation) estChamberand connectedo a quietair supply.The units were suppliedwith ambient emperature ir at the specifiedairflow. Theenvironmentalest conditions n the reverberation hamber aried or each estwithinthe following ranges -

    TestAir Temperature 18 degrees t2.0 degreeCRoomAir Temperature 20 degrees !2.0 degreeCBarometricPressure 1040millibar+ 5 millibarRelativeHumiditv 60 t l0%

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