[Hap-users] U-Value for Concrete Wall with Green Wall

[Matthew J. Baron via Hap-users]

Just a thought, depending on what hemisphere you’re in (I’m assuming northern) you could put all the walls on the northern exposure so they receive no direct sunlight then add walls that are the exact size of your windows (with the windows obviously) in the correct cardinal direction to account for solar loading. This way you do not have to try and make a correction to the u value and will get a fairly accurate space load.

Thank You,
Matthew J. Baron, PE

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Wendel, Centerpointe Corporate Park, 375 Essjay Road, Suite 200, Williamsville, NY 14221
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From: Hap-users [mailto:hap-users-bounces at lists.onebuilding.org] On Behalf Of Daniel Lim via Hap-users
Sent: Monday, October 31, 2016 1:40 PM
To: hap-users at lists.onebuilding.org
Subject: [Hap-users] U-Value for Concrete Wall with Green Wall

I am modeling a 5-story retail building with punched windows and pre-cast concrete walls. The walls are covered with green wall at a distance of 0.7 meters from the concrete wall. The windows are not covered. Since the concrete walls are now covered from direct sun, I need to make adjustments to the U-value of the walls to account for the shading. The exterior shadings in HAP is not applicable for this case since they apply only to windows as fins or canopy. The roof also has vegetated landscape which should also be accounted for in getting the U-value of the roof. Any advice or guidance on how to approach this in HAP is highly appreciated. Thanks in advance.



Daniel Lim

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