Oct-07
Delhi Industries Inc. 523 James Street, Delhi, Ontario N4B 2Z3
Tel. (519) 582-2440 Fax. (519) 582-0581
www.delhi-industries.com
PERFORMANCE CONSIDERATIONS
C
orrect
i
on
F
actors
:
The actual performance of the plenum is based upon the overall design of the plenum system. Two correction factors
must be applied to all plenum fans.
1. Outlet duct loss
2. Influence of adjacent plenum walls
ESTIMATED LOSSES DUE TO PLENUM OUTLETS
Outlet losses based on the outlet configuration and duct velocity must be included in the systems external static pressure
requirements. Outlet losses are dependent on the direction of the outlet, shape of the outlet and size of the Plenum. On
Plenum’s with more than one discharge, select the configuration that has the greatest loss.
CORRECTION FACTOR CALCULATIONS INCLUDED
IN
DELAIR
SOFTWARE PACKA
G
E AVAILABLE
FOR DOWNLOAD OR ON CD AT:
WWW.DELHI-INDUSTRIES.COM
