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Thread: ventilation
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31-07-2007, 11:38 PM #5
Re: ventilation
It's got to be negative in relation to the surrounding area otherwise the air wouldn't move through it would it ?
The air pressure within the office space is at a higher pressure than that in the ceiling space which which why the air can be extracted through the ceiling vents/grilles or whatever.
If the ceiling void was at a positive pressure in relation to the office space then the air would travel from the ceiling into the office space.
M'LudBrian - Newton Abbot, Devon, UK
Retired March 2015
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