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SVG not being created?

asked 2015-05-14 12:30:30 -0500

updated 2017-06-04 10:17:26 -0500

I'm working with an EnergyPlus model and after a successful simulation run the SVG is not created.

Reading into the Auxiliary Programs documentation it appears the post process program HVAC-Diagram.exe creates the SVG from the BND file. The BND files appear after each simulation, and an appropriate eplusout.bnd is created in the EPTEMP folder during simulation.

Any thoughts on why the SVG is not being created? Can I run the HVAC-Diagram.exe with my output BND renamed to eplusout.bnd in a specific location?

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How are you running EnergyPlus? EP-Launch, command line, batch file?

JasonGlazer's avatar JasonGlazer  ( 2015-08-03 06:41:19 -0500 )edit

For this particular model I am running my IDF using EP-Launch @JasonGlazer

Lyle K's avatar Lyle K  ( 2015-08-05 17:11:09 -0500 )edit

To help diagnose the issue, run the file in EP-Launch after you set the option for pausing. To set this option, go to VIEW, OPTIONS then under the COMMAND WINDOW choice, check the box labeled PAUSE DURING SIMULATION. After this when you press the SIMULATE button, the DOS box that is executing EnergyPlus will pause several times during the steps before and after the actual simulation including once right after HVAC-Diagram is called. What messages are on the screen after HVAC-Diagram is called?

JasonGlazer's avatar JasonGlazer  ( 2015-08-06 05:59:36 -0500 )edit

Jason @JasonGlazer, I am having a similar problem and when I tracked the error the way you suggested here is what I get:

"Operating system error: Not enough space Allocation would exceed memory limit"

Any thoughts?

Amir Rezaei's avatar Amir Rezaei  ( 2015-10-14 11:29:58 -0500 )edit

If others see the "Operating system error: Not enough space Allocation would exceed memory limit" please try the file in the latest version of EnergyPlus (currently 8.5.0) that seemed to fix the issue.

JasonGlazer's avatar JasonGlazer  ( 2016-04-28 14:04:41 -0500 )edit

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answered 2015-07-17 13:23:33 -0500

updated 2015-08-01 03:12:42 -0500

You can run HVAC-Diagram.exe in a command terminal without specifying any input file, if there is a file eplusout.bnd in your current working directory. Therefore you have to rename your bnd-file to be processed. When HVAC-Diagram program fails you can study the error message(s) in the command terminal as well as in the erroneous svg-file if created.

Running OpenStudio simulations, a svg-diagram usually is not created, but you can create one yourself by the described method, or by writing a script or OpenStudio measure. This can be quite useful, since OpenStudio HVAC schematics do not necessarily display all the loops of a system, e.g. when deploying (water-to-air) heat-pumps, the corresponding air-loops for heating and cooling coils cannot be seen in OpenStudio.

I have recently posted a bug report at EnergyPlus Helpdesk website and sent an idf-file for analysis to EnergyPlus Support. As M.J. Witte has pointed out, the HVAC-Diagram is a bit fragile, and an issue for bug fix has been added for developers.

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Thank you @OS-user-AT for this tip! I was able to run the HVAC-Diagram.exe as suggested and I received two different error messages. One of the errors was 'equipment not found with inlet from node: (node name)' and the other was 'Operating system error: Not enough space allocation would exceed memory limit'.

Lyle K's avatar Lyle K  ( 2015-08-05 17:15:24 -0500 )edit

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Asked: 2015-05-14 12:30:30 -0500

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Last updated: Aug 01 '15