Green Building Studio

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Active Member
nikolay.gerasimov
Posts: 9
Registered: ‎05-16-2013
Message 1 of 7 (344 Views)

Calculation errors in GBS

344 Views, 6 Replies
01-20-2014 09:06 AM

Does anyone else have problems with calculation in GBS? Current release cannot calculate any gbXML from Revit wich have:

- airflow for zones in l/sq.m. units - GBS misinterprets the value and calculates flow appr 10 times more

- different temperature settings for different zones - GBS substitutes them by maximal for heating and minimal for cooling for all zones

I have been experiencing these problems for a half a year, but GBS managed to pass ASHRAE 140 test and noone else complies about results... It is strange...

Employee
mstein7484
Posts: 91
Registered: ‎03-16-2009
Message 2 of 7 (322 Views)

Re: Calculation errors in GBS

01-22-2014 09:24 AM in reply to: nikolay.gerasimov

Hello,

At this point GBS does not have the capability to read the different zonal airflow or temperature values from your Revit file.

 

Regards,

 



Marjorie Stein
QA Analyst
Green Building Studio
Autodesk, Inc.

bpa.team@autodesk.com
Active Member
nikolay.gerasimov
Posts: 9
Registered: ‎05-16-2013
Message 3 of 7 (234 Views)

Re: Calculation errors in GBS

03-10-2014 10:17 PM in reply to: nikolay.gerasimov

It's not exactly true. GBS reads different settings for airflow and cooling setpoints for different zones. The only issue is heating setpoints. In what release will it be fixed?

Employee
mstein7484
Posts: 91
Registered: ‎03-16-2009
Message 4 of 7 (207 Views)

Re: Calculation errors in GBS

03-21-2014 01:10 PM in reply to: nikolay.gerasimov

Our, I misread your post and now see that you are referring to a problem with unit conversions.

 

We will post an update on the Forum when this issue has been fixed.

 

Regards,



Marjorie Stein
QA Analyst
Green Building Studio
Autodesk, Inc.

bpa.team@autodesk.com
Active Member
nikolay.gerasimov
Posts: 9
Registered: ‎05-16-2013
Message 5 of 7 (195 Views)

Re: Calculation errors in GBS

03-23-2014 09:10 PM in reply to: mstein7484

I referred to both problems, one doesn't exclude another. Without solution to both GBS will not produce correct results. Looking forward to the update.

Active Member
nikolay.gerasimov
Posts: 9
Registered: ‎05-16-2013
Message 6 of 7 (105 Views)

Re: Calculation errors in GBS

06-08-2014 04:30 AM in reply to: nikolay.gerasimov

Any news? Neither the arflow problem none the heating point one has not been resolved. Is it so difficult?

Employee
mstein7484
Posts: 91
Registered: ‎03-16-2009
Message 7 of 7 (12 Views)

Re: Calculation errors in GBS

07-17-2014 04:56 PM in reply to: nikolay.gerasimov

Our apologies for the inconvenience. This airflow issue was addressed in our latest release of Green Building Studio.

 

Regarding the temperature settings: Are you referring to the setpoint temperatures? You can export these settings to GBS for analysis with different settings for different zones, but you need to set the Revit Energy Analysis Export Category to "Spaces" and not "Rooms." Refer to this Help Topic for details: Energy Analysis using Building Elements - Detailed Workflow

 

Please try your analysis again.

Please let us know if additional clarification is needed, otherwise please accept this answer as a solution so that others can benefit from this information.

 

Regards,



Marjorie Stein
QA Analyst
Green Building Studio
Autodesk, Inc.

bpa.team@autodesk.com

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