NRWG Multi-Leaf Damper Models JK-180MB / JK-190
Technical
documentation
|
Construction subject to change
No return possible
Version: 2016-08-02 | Document: 09/53 | Page 8
Cross-sections and opening surface
CROSS-SECTIONS AND OPENING SURFACE AREAS
GEOMETRIC OPENING SURFACE AREA (A
V
)
FREE CROSS-SECTION (FQ)
FLOW RATE COEFFICIENT (C
V
)
AERODYNAMICALLY ACTIVE OPENING SURFACE AREA (A
A
)
AERODYNAMICALLY ACTIVE OPENING SURFACE AREA WITH WEATHER PROTECTION HOOD
When using the NRWG multi-leaf damper with weather protection hood, the value of the aerodynamically active opening sur-
face area of the weather protection hood must be taken into account.
