minimum air velocity to maintain +ve pressure for a retail shop design
minimum air velocity to maintain +ve pressure for a retail shop design
(OP)
I would like to know what the minimum air velocity should be to maintain positive pressure at the entrance of a typical retail shop in a big shopping mall
I know positive pressure would occur as long as the supply air rate is larger than the return air. However, is there any standard/ guideline that can be used as a reference?
What i have found is all about cleanroom, smoke extraction system design in which the requirement is too unrealistic for a retail shop..
Please help.
I know positive pressure would occur as long as the supply air rate is larger than the return air. However, is there any standard/ guideline that can be used as a reference?
What i have found is all about cleanroom, smoke extraction system design in which the requirement is too unrealistic for a retail shop..
Please help.





RE: minimum air velocity to maintain +ve pressure for a retail shop design
OR, stop by a local mall and see what Abercrombie & Fitch does. Every instance of A&F I have ever seen makes the mall area outside their store stink to high heaven.
OR, wait for one of the more experienced HVAC engineers to respond (I'm more of a controls guy). There's probably someone here who has crossed this obstacle before.
Good on ya,
Goober Dave
RE: minimum air velocity to maintain +ve pressure for a retail shop design
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RE: minimum air velocity to maintain +ve pressure for a retail shop design
I think Bernoulli's Law might be what you are looking for.
RE: minimum air velocity to maintain +ve pressure for a retail shop design
I was asked to find the exact figures that have been stated in any standard/guideline like ASHRAE, CIBSE.etc to meet the requirement for positive pressure .
Its often said that positive pressure shall be maintained but there shall be different requirements for each application.