[Equest-users] Equest + T-24 Error title 24

[Ryan F Larson]

I've been struggling to use equest to do T24 also.  I posted a question about how to model 100% OA systems and got no response.
I've seen the errors you're having before.  On your fan wizard screen you need to set all the values for the static pressure and cfm so that the program can select a proper fan curve.  Also the division by zero warnings suggest you have fields that need numbers to be entered.  If that still doesn't work, you may need to go into detailed edit mode to find the proper input fields.

Does anyone know how to model both the proposed and base line cases as having 100% OA?  Equest is only calculating that my building needs 4K cfm of OA for the baseline, but this is a research lab and really needs 20k cfm of OA.  My T24 compliance check shows a huge load difference between the proposed and baseline models so my building is noncompliant.


Ryan F. Larson | Mechanical Designer | EIT
DURRANT  Progress by Design.

Partnerships and projects that advance communities
400 Ice Harbor Drive | Dubuque, IA  52001
T  563.583.9131 | C 847.902.2909
www.durrant.com<http://www.durrant.com/>
From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Chakraborty, Jude
Sent: Thursday, November 10, 2011 9:28 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Equest + T-24 Error

Dear all,

I am trying to do T-24 2008 compliance through equest and I keep receiving these error messages (screenshot attached). Can anyone point me out to any documentation regarding these errors?

Thanks
Jude.

P.S. Nick/Aaron/Ramya/Carol/Chetan, your suggestions for simplifying the model really worked well. Its running smoothly now except for the T-24 compliance stuff. Hopefully I will get a right direction on that as well.
Thank you so much :)

[cid:image003.png at 01CCA04D.5C0DDC80]

Judhajit Chakraborty
Built Ecology Specialist

405 Howard Street
Suite 500
San Francisco CA 94105

T.   +1 415 398 3833
D.  +1 415 402 5815
F.   +1 415 433 5311

E. judhajit.chakraborty at wspfk.com<mailto:judhajit.chakraborty at wspfk.com>
W. built-ecology.com<http://www.built-ecology.com/>

[cid:image004.png at 01CCA04D.5C0DDC80]

A specialist service of WSP Flack + Kurtz

From: Chakraborty, Jude
Sent: Friday, October 21, 2011 2:26 PM
To: 'Nick Caton'; Dahlstrom, Aaron; equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Equest freeze and Spreadsheet refresh error

Thanks Nick/Aaron,

I think going back simplifying the model with weighted zones instead of the architectural space types (which I had originally modeled with) will be the best option. Hopefully this will help. I know splitting the model is another option I can try, but then again, that's an untouched territory as far as my equest skills are concerned. I will keep you posted on that.

Thanks again,
Jude.

Judhajit Chakraborty
Built Ecology Specialist

405 Howard Street
Suite 500
San Francisco CA 94105

T.   +1 415 398 3833
D.  +1 415 402 5815
F.   +1 415 433 5311

E. judhajit.chakraborty at wspfk.com<mailto:judhajit.chakraborty at wspfk.com>
W. built-ecology.com<http://www.built-ecology.com/>

[cid:image004.png at 01CCA04D.5C0DDC80]

A specialist service of WSP Flack + Kurtz

From: Nick Caton [mailto:ncaton at smithboucher.com]
Sent: Friday, October 21, 2011 2:05 PM
To: Dahlstrom, Aaron; Chakraborty, Jude; equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Equest freeze and Spreadsheet refresh error

Jude/Aaron,

When I've run into this circumstance I've taken it as great justification to go back and simplify the model.  If that's not out of the question considering your timeline and requirements for accuracy, I would definitely advise carefully assessing whether you can define things in a simpler fashion.  Attached recent discussion with James Chueh seems to parallel your situation and may help you brainstorm a few ideas.

I've never done this due to sheer model size (only on smaller projects), but I have advocated "splitting the model" for time-efficiency, and that may be a good strategy for you in this instance.  Look for an importing mini guide thread I posted in the archives.

The concept is to build up parallel model files that are intentionally structured/named in a fashion to be import-able into each other.  You may find splitting your building in two will be functionally manageable with the eQuest interface, and if/when you need to model both halves of the building together you can go through the importing hoops.  Before going far down this path I would personally give this strategy a test run to be sure the importing feature doesn't cause unique issues due to model size... uncharted territory!

~Nick


[cid:image005.jpg at 01CCA04D.5C0DDC80]

NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
fax 913.345.0617
www.smithboucher.com

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Dahlstrom, Aaron
Sent: Friday, October 21, 2011 3:28 PM
To: Chakraborty, Jude; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Equest freeze and Spreadsheet refresh error

We have definitely have had models that were so large we couldn't make changes in the spreadsheet view.
It's tedious but one option is to make any changes needed in the dialog boxes.

AD

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290
e: ADahlstrom at in-posse.com<mailto:ADahlstrom at in-posse.com> | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.akfgroup.com<http://www.akfgroup.com/>



From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Chakraborty, Jude
Sent: Friday, October 21, 2011 1:41 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Equest freeze and Spreadsheet refresh error

Dear all,

I am trying to model a high rise 25 floor courthouse building with multiple shells (12) and  many zones (near 500). I have used floor multipliers where I could to make the model simpler but it ended up with 60,000 lines and about 7500 components. The .bdl file doesn't show any error and I have also run a default simulation, which took its time but gave results without any errors.

Now in the detailed interface, equest freezes whenever I try to make changes on anything or create a new schedule. Also when I go to the building shell spreadsheet, it shows this "Spreadsheet refresh error" with the following text "Selection list exceeds maximum length of 65,500 characters (98,339required). Notify program support representative".

Does it mean that I need to reduce number of spaces/zones or divide my building into two separate files? Any idea how to solve this problem?

Thanks,
Jude.





This e-mail may contain information that is confidential, privileged or otherwise protected from disclosure. If you are not an intended recipient of this e-mail, do not duplicate or redistribute it by any means. Please delete it and any attachments and notify the sender that you have received it in error. Unintended recipients are prohibited from taking action on the basis of information in this e-mail. E-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be intercepted, deleted or interfered without the knowledge of the sender or the intended recipient. If you are not comfortable with the risks associated with e-mail messages, you may decide not to use e-mail to communicate with In Posse.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20111111/62c60b8c/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image003.png
Type: image/png
Size: 16220 bytes
Desc: image003.png
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20111111/62c60b8c/attachment-0004.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.png
Type: image/png
Size: 2605 bytes
Desc: image004.png
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20111111/62c60b8c/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image005.jpg
Type: image/jpeg
Size: 1459 bytes
Desc: image005.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20111111/62c60b8c/attachment-0002.jpg>