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WPL 100 Vertical Louvre Selection
Aluminium Louvres for Vertical Applications
Example: To select a louvre to exhaust 1.8m3/s
with a pressure drop of 20Pa.
Step One: From the Performance Chart below select
the Pressure Drop of 20 Pa. Plot across to the exhaust curve.
Then plot down to the indicated free Area Velocity e.g. 2.6
m/s.
WPL100 VERTICAL PERFORMANCE
(Tested at Auckland Ventilation Services,
Sept 2000, test results available on request)
Step Two: Calculate the required
Free Are of the louvre.
Free Area = Volume Flow Rate/Free Area Velocity
Free Area = 1.8 (m3/s)/2.6 (m/s) = 0.69 (m2)
Step Three: Select a suitable louvre
from the Free Area (m2) table. Some suitable louvres
from the Free Area Table are:
- 1.175m wide x 1.250m high
- 2.456m wide x 0.600m high
- 1.968m wide x 0.750m high
- 0.748m wide x 2.000m high
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