FACTAIR™ Terminal Outlet Design

This program is used for properly selecting a McGill AirFlow FACTAIR™ terminal outlet. The FACTAIR terminal outlet is a metal diffuser utilizing vari-dampers to discharge a narrow to broad conical flow pattern. It is an ideal solution for spot cooling and heating applications. The FACTAIR terminal outlet has many perforated holes, approximately 1/4" diameter, that allow for 360 degree air distribution. FACTAIR outlets have been used successfuly in applications with velocities up to 4000 fpm.

There are four FACTAIR models, numbers 25, 50, 75, and 100.

Calculate acoustical and airflow data for FACTAIR terminal outlet

Instructions: Program will determine airflow and acoustical data for a standard FACTAIR terminal outlet. Choose design parameters and desired settings. Press Calculate Data button when finished. Press Clear Data button to clear calculated results and start over.

Project Name:
System Reference:
FACTAIR Diameter: inches
Volume Flow Rate: cfm
Room Absorption: dB in all octave bands
Optional Ball Joint:
Volume Control Damper Position: Completely Open
Damper blade at 45 degrees
I don't need the volume control damper
Vari-damper™ Position: Completely Open
Completely Closed
Open 45 degrees
Result:
FACTAIR model:
FACTAIR diameter:  inches
Entering velocity:  fpm
Pressure Loss:  in wg
NC -
dBA Level:  dBA
Throw distance:
Click here to open data sheets
 

Notes:

1. Static pressure is the FACTAIR inlet static pressure required to achieve the throw velocities listed.

2. The maximum velocity vector from the FACTAIR. For the FACTAIR outlet with vari-dampers closed, the maximum velocity is about 50 to 65 degrees from the FACTAIR centerline axis.

3. Static pressure, NC and dBA calculations based on a 10-inch diameter FACTAIR outlet.

4. Standard available materials are stainless steel, galvanized steel, and aluminum. Standard FACTAIR diameters are from 4 to 26 inches in 2-inch increments.

5. Static pressure and acoustical data taken from a FACTAIR Model 75. Until further testing is performed, it is assumed that the models with a ball-joint (Models 50 and 100) will have the same pressure drop and acoustical data.

6. NC and dBA levels calculated use the user-entered room absorption. Contact McGill AirFlow's Engineering Department for critical noise-sensitive applications.

7. The results of this program and the data contained in published data sheets may not be identical due to rounding and regression of tabular data.

 


McGill AirFlow's FACTAIR™ Terminal Outlets:

Features
Air Pattern Selection
Models and Dimensions
Materials of Construction

Performance Data Sheet (.pdf)

Select a FACTAIR Terminal Outlet—get acoustical and airflow data

  

 

 

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An enterprise of United McGill Corporation—Family owned and operated since 1951

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