Bigassfans Basic 6 - Understanding airflow patterns

12’–24’ BASIC 6
®
WWW.BIGASSFANS.COM ©2012 DELTA T CORP. ALL RIGHTS RESERVED
8
Understanding airow patterns
Airow with streamlined obstruction
Obstructions on the oor tend to block the
horizontally moving air. Thin or streamlined
obstructions do not block much airow,
regardless of size. The air tends to ow
smoothly around these obstructions, losing little
momentum, and leaving only a small stagnant
area behind the obstruction.
Airow with wide, blunt obstruction
A wide, blunt, or at-faced obstruction forces
the air to change direction, turning upward and
outward. There is a stagnant area behind these
obstructions that is wider and higher than the
obstructions themselves.
Airow in an enclosed area
The oor jet radiates outward until it reaches the
walls, which deect the jet upward. After it hits
the ceiling, the upward ow is directed inward
to the low pressure area above the fan where
it is then pulled down toward the oor. This
creates a convection-like air current that gathers
momentum. Once this current is established,
the fan begins to move air outside of the
current, escalating its cooling effects.
Airow in an open area
The airow moves from the fan toward the oor.
Once airow hits the oor, it moves outward in
all directions. The deection of air off the oor is
called a “oor jet.”
Airow with multiple fans
Where there are multiple fans appropriately
spaced, the expanding jets of adjacent fans
meet to create a pressure zone. The pressure
zone acts like a wall, causing each fan to
behave like a single enclosed fan. Typically,
a single fan’s performance will increase when
working in conjunction with other fans.
Pre-Installation (cont.)
Overhead View
Overhead View
Side View
Overhead View
Side View