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NC-v4 EAp2:Minimum energy performance

AHSRAE 90.1, G3 Modeling Question - External Louvers/Shades

Hello!  Our team is researching opportunities to reduce SHG loads on an 8-story new construction university residence hall.  The question has come up regarding the use of external-fixed louvers or shades.  How are these features to be modeled?  

- Are they incuded in the Baseline and Proposed cases in the same way?  

- Are they excluded from Baseline and included in Proposed?  

- Or are they excluded from both?  

LEED seems to promote these devices, but want to make sure we are interpreting the ASHRAE definition of these devices correctly in the model.

 

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Mon, 08/07/2023 - 15:59

You model the proposed as designed. The baseline is modeled without them (see 90.1 Table G3.1 - 5 Baseline (c.)). 

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