Infiltration & Whole Building air leakage ????

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Dear All e-Quest Users

Whole Building air leakage shall not exceed 0.4 CFM/ft? @ 0.3" w.g (2 L/s/m? @ 75Pa) .

So if I consider whole Building air Leakage = 0.4 CFM/ft2 , How can I Express it in e-Quest , to calculate the Infiltration Value for each space in the Building , especially in Detailed mode ????

Note : in detailed mode for each Space , we have to put a data for Infiltration CFM/ft? , but ft? is for floor area not building envelope area) ?.please any help is very appreciated especially who have Big Experience please?thanks for all

My Regards,
Riad el Abed

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This is one of those areas where the wizard is still useful. If you input
infiltration in the DD wizard ?Building Envelope Constructions? screen, it
will automatically calculate infiltration based on exterior wall area
(I?ve never checked to see if it includes exterior roof in the calculation
as well, but it doesn?t appear so).

Note that 0.4 CFM/SF is not the proper value to input here, because that
is a high static pressure for testing purposes. In my local energy code,
the following conversion factor is given:

If you have already left the wizard, you might want to save another copy
of your project, go back into the wizard to play with the infiltration
rates, and then use the spreadsheet view of Detailed Edit to copy and
paste the infiltration rates the wizard calculates for you. This works
well if you haven?t changed the order of the spaces or added many new
spaces since you left the wizard.

Sincerely,

Nathan Miller, PE, LEED AP BD+C

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Attached are my views on Tall (Whole) Building Infiltration. It was expressed during a discussion on Tall Buildings.
Where did this come from Whole Building air leakage shall not exceed 0.4 CFM/ft? @ 0.3" w.g (2 L/s/m? @ 75Pa)

Varkie Thomas's picture
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Dear Nathan

Thanks very Much for your help & for your informations & your simple explanation, really I appreciate it , I don't know how to thank u ?? I will try as u told me, but I am sure it will be OK?.

Also Thank u Thomas, & thanks for your file (really is important, but maybe I need time to study it very well)?.thanks

My Regards,
Riad el Abed

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