Eliminate drafts.. save energy.. and increase the efficiency of your heating and cooling system with our Diffusers!

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Sandy Scott at Applause Distributing Inc. 810-569-3000, sales@applausedistr.com


  • Energy Savings


  • Total Circulation
  • NC Values
    Applause Diffusers are very quiet. Sound pressure levels (SPL) never exceed ambient background SPL up through flow rates of 1,000 FPM. At 1,000 FPM the NC value of our diffuser was 22. At 1,500 FPM the NC value was 33. These values are consistently quieter than the competitors diffuser tested, which had NC values ranging from 23 at 600 FPM to 44 at 1,500 FPM.

    Layout
    Draw throw radius circles uniformly around the diffusers. For high air-change design, the throw patterns may show over-lap and wall interference. For low air-change, there may be space between patterns and walls. This is OK. Do not try to throw to the furthest corner of the room. The kinetic energy supplied by each jet will gently drive the air mixture to the furthest wall. The mixture will hug the ceiling because of the Bernouli velocity pressure effect, and the zero relative weight of the air at the stabilization temperature.

    Field Adjustment
    To find the design velocity of each diffuser, divide design CFM by the outlet area of the desired diffuser (see Performance Table). Read the average diffuser outlet air velocity with an appropriate air velocity meter (like a Dwyer #460). Do not use a volume instrument. Adjust the branch duct damper to obtain the design velocity.

    Performance Table

    Diffuser Size

    Nozzle Velocity, FPM

    300

    400

    500

    600

    700

    800

    Duct
    Size
    Inches

     

    Velocity Press., wc, VP
    CC or CCT; (VPx1.1) = TP
    CS; (VPx2.25) = TP

    .006
    .007
    .014

    .010
    .011
    .023

    .016
    .018
    .036

    .022
    .024
    .050

    .030
    .033
    .068

    .040
    .044
    .090

       

    NC VALUE

    -

    -

    -

    -

    -

    -


    6/8

     

    Flow Rate, CFM
    CC or CCT; Throw, Ft.
    CS; Throw, Ft.

    105
    4
    6

    140
    4
    6

    175
    4
    6

    209
    4
    6

    244
    4
    6

    279
    4
    6

       

    NC VALUE

    -

    -

    -

    -

    -

    -

    10/12
     

     

    Flow Rate, CFM
    CC or CCT; Throw, Ft.

    236
    6

    314
    6

    393
    6

    471
    6

    550
    6

    628
    6

    System Resistance
    Diffuser has unusually low pressure drop. Refer to the first four lines of Performance Table for Velocity & Total Pressure (VP and TP).

    The Throw in the Performance Table is the radial distance from the center of the diffuser to a point where the jet mixture slows to 50 FPM.

     

    Applause Distributing Inc. Sandy Scott 810-569-3000

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