Results 1 to 4 of 4
Threaded View
-
24-10-2007, 08:42 AM #1
Air curtains - do they really work?
Hi all,
My situation:
Outdoor air: 30C, 90%RH
Indoors: 5-level retail building served by 1000 RT of chilled water air conditioning
Some areas near entrances are consistently too warm, thought to be due to outdoor air coming in, through the people-sensing-auto-sliding-glass-doors.
The opening is about 2m wide by 2.4m tall.
Condensation is also often seen on the cold air outlet grilles.
I have a suspicion that air-curtains aren't very effective if there is mass air flow due to pressure differences.
i.e. an air curtain might be effective for a walk-in freezer since it is quite small, and is close ended. But for a multi-level retail building, there are bound to be changing pressure differentials, due to multiple doors at the perimeter of the building opening and closing, and also due to imbalances of the air distribution.
Are some characteristics of air curtains superior to others?
Faster is better?
Downward blowing versus door-mounted vertical-axis side-blowing?
Should the air-curtain be situated to blow indoor air or outdoor air?
Similar Threads
-
Work Experiance/Trainee....HELP
By Darren wright in forum TrainingReplies: 3Last Post: 01-11-2010, 05:07 PM -
Prison vs Work
By Abe in forum Chit Chat & Service StoriesReplies: 11Last Post: 06-09-2010, 08:47 PM -
part p
By eggs in forum ElectricalReplies: 25Last Post: 15-11-2007, 08:55 PM -
Mitsibishi VRV System 8 out of 10 units work
By moondawn in forum Air ConditioningReplies: 5Last Post: 29-09-2005, 11:02 PM -
Desperate to work
By nomiracle in forum TrainingReplies: 21Last Post: 29-06-2005, 11:41 PM