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CS-2009 IEQp1:Minimum IAQ Performance

uncondtioned space and natural ventilation

Hello We are working on a office building applying for LEED CS. The building is going to be naturally ventilated. we haven't been able to understand if naturally ventilated spaces are considered conditioned or unconditioned, or somewhere in between. Regrettably, ASHRAE is not very clear with info and definitions regarding natural ventilation. Could anyone help us with this? Thank you all

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Roger Chang
Principal, Energy and Engineering Leader
DLR Group | Westlake Reed Leskosky
LEEDuser Expert
267 thumbs up

Wed, 11/23/2011 - 15:58

Luis, could you clarify how you're using the definition of conditioned versus unconditioned in your LEED submission?

Wed, 11/23/2011 - 16:15

Well, we haven't designated any space yet, but since the ASHRAE defines a conditioned space as "a cooled space,heated space, or indirectly conditioned space" and our building is naturally ventilated as a whole (and therefore there aren't any cooling or heating system), we think that everyone of the building spaces are considered unconditioned. What do you think Roger?

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