[Equest-users] Modeling regular curtain wall systems

Mark Darrall MDarrall at a2so4.com
Thu May 5 16:55:14 PDT 2011


Thank you! I'm working against a pretty hard deadline and don't really have time to learn two more software packages. I found some basis of design information for both the curtain wall and glazing - can I use manufacturer's design guide graphs and calculations? The graphs are "per AAMA 507." They also have charts for NFRC 100 overall U factors and NFRC 200 SHGC and VT.

I think the LEED reviewers just want to make sure we're accounting for the frames and not just getting COG.

Take care!

MARK DARRALL, AIA, LEED AP BD+C, NCARB
Senior Project Manager

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Indianapolis, Indiana 46225
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From: Alex Krickx [mailto:akrickx at seriousmaterials.com]
Sent: Thursday, May 05, 2011 7:47 PM
To: Carol Gardner; Mark Darrall
Cc: equest-users
Subject: RE: [Equest-users] Modeling regular curtain wall systems

You can create curtainwall systems in Window and Therm - but I don't believe that eQUEST will import any of the frame conductance data. I think the best way to model curtainwall systems is to model the frame in THERM and WINDOW5, create a DOE2 report file - then import that file into eQUEST and manually edit the frame width and conductance to match what you calculated in WINDOW5/THERM.
Alex

Alex Krickx, LEED AP
Building Energy Specialist
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1250 Elko Dr, Sunnyvale, CA 94089
(t) 408.541.8124

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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Carol Gardner
Sent: Thursday, May 05, 2011 4:43 PM
To: Mark Darrall
Cc: equest-users
Subject: Re: [Equest-users] Modeling regular curtain wall systems

Intriguing question. I did just a little looking around and found: windows.lbl.gov/software/NFRC/NFRCSim6.3-2010-Manual.pdf<http://windows.lbl.gov/software/NFRC/NFRCSim6.3-2010-Manual.pdf>.
which is a link to the user manual for Window and Therm. Check it out. You can create things, windows,etc., maybe even curtainwalls, using Window and import them into eQUEST

Carol
On Thu, May 5, 2011 at 4:19 PM, Mark Darrall <MDarrall at a2so4.com<mailto:MDarrall at a2so4.com>> wrote:
Hi!

What's the best way to input a curtain wall system to allow for the repetitive vertical mullions? I can calculate system U factor based on the area of vision glass : overall area, but I don't see a way to input that directly...unless:

If the vertical mullions are already captured in the system U factor can I just ignore it and treat it like one huge picture window? So at FRAME-WIDTH I would just enter the width and properties of the perimeter frame and then at GLASS-CONDUCTANCE enter the corrected U-factor for the system?

I did search this in onebuilding.org<http://onebuilding.org>, but didn't see it addressed.

Thanks!

MARK DARRALL, AIA, LEED AP BD+C, NCARB
Senior Project Manager

[cid:image001.jpg at 01CC0B5E.53EE9DC0]

DESIGN ENRICHING LIFE // LIFE ENRICHING DESIGN

A2SO4 Architecture, LLC
Union Station
300 South Meridian Street / 250
Indianapolis, Indiana 46225
TEL  317 388 8850<tel:317%20388%208850>
FAX  317 280 0692<tel:317%20280%200692>
MOB 765 749 0841<tel:765%20749%200841>
www.a2so4.com<http://www.a2so4.com>

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--
Carol Gardner PE
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