[Bldg-sim] Design Builder Query

Sun Oct 8 02:11:20 PDT 2017

Also take a look at the outputs you’ve requested. If, for example, you’ve requested sub-hourly outputs, surface-level results etc. to be stored and generated for a large and/or complex building that can have a significant effect. Can you try re-running the simulation and selecting only annual/monthly results, perhaps with fewer outputs as a starting point? As Javed says, you should contact the DesignBuilder support desk if you can’t resolve the issue. You can raise a support ticket here: https://support.designbuilder.co.uk/index.php?/Tickets/Submit

From: Javed Iqbal [mailto:javedvit at gmail.com]
Sent: 07 October 2017 12:58
To: info at sprout-green.com
Cc: bldg-sim-subscribe at onebuilding.org; Bldg-sim <bldg-sim at lists.onebuilding.org>
Subject: Re: [Bldg-sim] Design Builder Query

Hi

Tough call, without background information it’s hard to say any specific reason causing this problem. Someone could only help you better if you explain your problem better!!

Too large
or
 Complex both requires different
set of 
approach to resolve
 the problem
; part of this could
be
 your modeling approach within E+ and part in Design Builder. In my experience 100,000 m2 Large Building
sometime 
might take less simulation run time compared to 10,000 m2 depending on the complexity. If I were you I would look into:

1. Building
Geometry
-
M
ore surfaces more run time
2. No. Of glazing surfaces? more sub surfaces more run time. You should lump small windows into one large window if the boundaries conditions are same
3. Daylight
S
ensor?
4. Shading elements?
5.

Complexity
o
f HVAC system

Refer I/O reference file OR Report from LBNL Link<http://escholarship.org/uc/item/36h4m5z0#page-1>

6. Executing run through
DB 
simulation manager?

Its faster than simulating within DB

7. Using DesignBuilder interface for result
V
isualization?  It takes more time to reload
 OR use xEsoView or DB Result Viewer

As said
there are many 
reasons
that 
could
 increase simulation run time. I encourage to investigate it further and simplify few things within reasonable limits.

You could also submit a ticket on DesignBuilder Website to get more help!

Sent from mobile, pls excuse typos

On Oct 7, 2017 4:19 AM, "Sprout Info_Mail via Bldg-sim" <bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>> wrote:
Dear All,

I have simulated a project building in Design Builder however after around 7 hours of running the simulation I am unable to see the final summary results page. I think this is due to the model being heavy and due to that that the results too are too large to display. Any help to retrieve that result page would help me immensely.

Any thoughts?

Thanks,
Namrata

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