[Equest-users] Problem with Sage Glass Analysis

[David Reddy]

As others have indicated, yes, this can be modeled in eQUEST.

Rather than using the library file provided by a vendor, we created our 
own G-T-C descriptions using the WINDOW 6 program and importing into 
eQUEST.  We found some interesting bugs/constraints that I think might 
help reduce some headache for others, and in the case of #1, give more 
realistic results.  Haven't reviewed the materials provided by Josh to 
see if these are now addressed in the directions provided by Sage Glass, 
though I did forward this to them earlier this year when we discovered them.

 1. In eQ v3.63 and 3.64, the import of WINDOW data neglected to
    populate the FILMS-COND keyword when creating the custom
    GLASS-TYPE-CODE (G-T-C).  This resulted in much lower U_cog values
    than expected. We tested import with v3.65 and this bug appears to
    have been fixed.
 2. If used for switchable glazing, the GLASS-TYPEs referenced by WINDOW
    objects must be listed in the input file in consecutive order. 
    Otherwise, a BDL error will result.
 3. If used for switchable glazing, the G-T-Cs used must have an numeric
    integer name that is >1000.  Otherwise, a BDL error will result.


Hope this helps,
David

On 7/22/2015 1:07 PM, David Griffin II wrote:
>
> I received the attached files from Sage Glass for my eQUEST model. 
> Contact Josh – see below- for additional information.
>
> **
>
> *Josh Battles*, *LEED Green Associate* *  | *Architectural Solutions 
> Manager |  o:507-331-4921 c:507-323-5626 | josh.battles at sageglass.com 
> <mailto:josh.battles at sageglass.com>
>
> www.sageglass.com <http://www.sageglass.com/>  |  2 Sage Way  |  
> Faribault, MN 55021
>
> Sincerely,
>
> ARCH | NEXUS <http://www.archnexus.com> 		
> DAVID W. GRIFFIN II
> BEMP
> ENERGY ANALYST
> 2505 E Parleys Way
> Salt Lake City, UT 84109
> *Office* 801.924.5028
> archnexus.com <http://www.archnexus.com>
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> <https://www.linkedin.com/company/architectural-nexus>
>
> *From:*Brian Cline [mailto:briancline at u.boisestate.edu]
> *Sent:* Tuesday, July 21, 2015 4:32 PM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Problem with Sage Glass Analysis
>
> Hi,
>
> I am attempting to model energy saved by installing electrochromic 
> glass for use in a large west facing lobby area into eQUEST. Given 
> that eQUESTS capabilities only include modeling a single tint for a 
> pane of glass in a shell, how would I go about analyzing electricity 
> consumption with the electrochromic glass for each hour over the 
> course of a year? If anybody either has thoughts on this or has done 
> this in the past, I would sure appreciate it.
>
> Thanks,
>
> -Brian Cline-
>
>
>
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