[Equest-users] Bad building component

[Pasha Korber]

Thanks Ethan for that feedback-  what you stated makes sense.  I was able
to move past the error in another copy of the file and recreating all the
systems one-by-one to make sure nothing was stopping the calculation run,
but I'll go back to the original file with the error and see if I can find
where that is happening.  And thank you soo much for sending the VRF file
too.  This will be helpful.  I don't think I've seen this before, so I
really appreciate this additional information.

Cheers,
Pasha Korber
Ph 308-763-1593

On Tue, Oct 11, 2022 at 5:53 PM Seaman, Ethan <eseaman at smma.com> wrote:

> Pasha, no problem – thank you for including the screenshot below.  Did you
> maybe set the flow/capacity to 0.0 cfm/ton, or the coil-BF to 0.0? eQuest
> could be trying to divide by 0 somewhere which is never good.  I have a
> feeling the issue is coming from the flow/capacity input (or related inputs
> that it gets it’s values from).  After it says “convergence failure:1…” it
> says 1/1/1 which means the failure is on the first hour of the year which
> is a clue (no auto-sizing can take place if the flow/capacity is zero).
>
>
>
>
> ~ ~ ~
>
> P.S. Here is a reference for the VRF system.  This youtube video is by
> Douglas Maddox who helped to develop the VRF systems for DOE 2.3.
>
> https://www.youtube.com/watch?v=DZlcEXa4tHQ
>
>
>
> *_______________________________________________*
> * Ethan Seaman*
> Sustainable Design Analyst
>
> *SMMA*
> t: 617.520.9288
>
> www.smma.com
>
>
>
> *From:* Pasha Korber <pasha.pkconsulting at gmail.com>
> *Sent:* Tuesday, October 11, 2022 6:06 PM
> *To:* Seaman, Ethan <eseaman at smma.com>
> *Cc:* equest-users at onebuilding.org
> *Subject:* Re: [Equest-users] Bad building component
>
>
>
> Ethan-  Thank you!  I worked only in eQuest interface to set it up-- buy
> your reference of the wrong control zone might be likely.  I'm doing a VRF
> system in DOE 2.3, and I don't have a good step by step reference to make
> sure I have set it up correctly.  I;ve been able to get through this
> initial error that I first referenced, but now I have some errors in
> running the file that I think is specific to the VRF units.  The error I'm
> able to "see" is a convergence error-  I've never gotten anything like this
> before, and it appears differently in the SIM file than we are used to
> seeing.  I am grateful for any insight the rest of you have.
>
>
>
>
>
> On Mon, Oct 10, 2022 at 1:04 PM Seaman, Ethan <eseaman at smma.com> wrote:
>
> Hi Pasha,
>
> A couple things come to mind, but this can be tough to diagnose without
> knowing the steps you took when adding the HVAC inputs.  Did you only work
> in the eQuest user interface, or did you work in the .INP file as well?
>
> I just had this one recently and it was coming from a single-zone system
> that had an incorrect thermal zone specified as it's control zone
> (incorrect in that the specified control zone was a thermal zone under a
> different system).
>
> I recommend troubleshooting by opening the file back up with 'pause for
> errors' selected.  That usually does a good job.
>
> You can also open the .BDL file and search (ctrl+F) "error".
>
> _______________________________________________
> Ethan Seaman
> Sustainable Design Analyst
> SMMA
> t: 617.520.9288
> www.smma.com
>
> -----Original Message-----
> From: Equest-users <equest-users-bounces at lists.onebuilding.org> On Behalf
> Of PKConsulting via Equest-users
> Sent: Friday, October 7, 2022 3:25 AM
> To: equest-users at onebuilding.org
> Subject: [Equest-users] Bad building component
>
> Hi all- I just finished inputting a ton of HVAC systems and trying to run
> calculations and I’m getting a bad building component error-  but nothing
> is showing up in the BDL errors and it’s not trying to run so I’m not
> getting a DOE2 report with an error.
>
> Do you have any ideas on how I can find what is stopping the calcs before
> they even start?  I’m not sure where to look to find what is causing the
> error?  I’m not even what to look for in the inp file to find what’s not
> work.
>
> I’d appreciate any ideas you have to help me push through this error to
> get it to calculate…
>
> Thanks for your thoughts on this.
>
> Pasha
> Ph: 308-763-1593
> _______________________________________________
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