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ISO 13790 is a precedent version of ISO 52016. Many have tested and reported the percent differences of monthly aggrega

Example of using openstudio-standards to create baseline model from proposed Anyone has an example of to work with opens

ISO 13790 is a precedent version of ISO 52016. Many have tested and reported the percent differences of monthly aggrega

Import a customized BSDF .xml file into LBNL Window We have a shade product tested and acquired the BSDF data (in .xml)

That's exactly what I'm looking for! Thanks a lot!

Hi Andy, thanks for the reply. The BSDF data belongs to a client, not sure if we can share it without a permission. But

Import a customized BSDF .xml file into Window We have a shade product tested and acquired the BSDF data (in .xml) from

Import a customized BSDF .xml file into Window We have a shade product tested and acquired the BSDF data (in .xml) from

Import a customized BSDF .xml file into Window We have a shade product tested and acquired the BSDF data (in .xml) from

Import a customized BSDF .xml file into Window We have a shade product tested and acquired the BSDF data (in .xml) from

Adam, thanks for your suggestion. It does not look like I had anything funny in the operation schedules, nor the zone sizing. Or maybe I misunderstood - were you referring to other objects? I guess to rephrase the question, are there any successful strategies/examples through/in which the min. air flows are controlled correctly?

Created a simplified lab building model in EnergyPlus with high OA/total air change rate (6 ACH), however, the simulation results show actual airflow is not following specified air flow rate in EnergyPlus.

In this 4-zone lab building, I created 3 simple lab zones and one mechanical room. The minimum OA and minimum air flow for labs are 6 ACH according to the design (100% OA). I had entered 6 ACH in Sizing:Zone - Cooling Minimum Air Flow(converted to m3/s), AirTerminal:SingleDuct:VAV:Reheat, DesignSpecification:OutdoorAir objects, and followed this post, I assigned DesignSpecification:OutdoorAirobjects to AirTerminal:SingleDuct:VAV:Reheat, in order to enable OA-controlled ventilation.

The simulated ventilation rate hardly rises above 4 ACH for any of the lab spaces. Is there anything else I had missed to specify the min air flow? Could you please share your strategies to mandate the minimum air flow in EnergyPlus model for an air-flow-driven space.

Below are the zone areas and volumes in the format of Zone ID---area(m2)---volume(m3)

• AGL1-DRKMM-001---174---743
• AGL1-LABOR-003---223---951
• AGL1-LCORR-002---140---595
• AGL1-MECHE-004---58---248

The E+ Model: 4zoneLab.idf

Problem resolved at eppy issue 147!

Yeah, sure. Thanks for looking into this!

Yeah sure, the previous error is resolved by commenting it out. Another one yet point to line 23, in <module>, "C:\Python27\Lib\site-packages\eppy\runner\run_functions.py" which is import multiprocessing as mp. The run_function.py is also called in modeleditor.py, so line 28 is reported.

I just upgraded to the newest version. Now it's reporting line 22, which is also from py._log import warning.

line 24 is from py._log import warning

Thanks for the heads-up. There is a check box under EditPythonScript ->Tools -> Options -> Script Engine, where one can check "Frames Enabled". It seems working well afterward to import eppy, however, I still can't import "modeleditor" under eppy, please see the updated post for the error code. Thanks in advance!

I was trying to import Eppy package in the Ghpython editor in Grasshopper. Got this error:

 Runtime error (MissingMemberException): 'module' object has no attribute '_getframe'"

I also found this thread posted earlier which shows the same error:

Has anyone succeeded importing eppy in Ghpython/Grasshopper?

There is a check box under EditPythonScript ->Tools -> Options -> Script Engine, where one can check "Frames Enabled".

It seems working well afterward to import eppyin the ghpython editor, however, I still can't import "modeleditor" under eppy, when I do from eppy import modeleditor, the error shows:

Runtime error (InvalidOperationException): Unsupported param dictionary type: IronPython.Runtime.PythonDictionary
Traceback:
  line 44, in initpkg, "C:\Python27\Lib\site-packages\py\_apipkg.py"
  line 19, in <module>, "C:\Python27\Lib\site-packages\py\__init__.py"
  line 24, in <module>, "C:\Python27\Lib\site-packages\eppy\modeleditor.py"
  line 4, in script

Hi I'm working on a project that use the RunOSM library to run osm files through EnergyPlus. What I want to do is to search for the highest version of EnergyPlus installed in the user's machine and use it to run osm model. So I guess would need to change the code within the RunOSM class.

The original code of finding EnergyPlus in the RunOSM is:

ep_hash = OpenStudio::EnergyPlus::find_energyplus(8,3)

Which will store the path information of the EnergyPlus Version 8.3 in hash ep_hash. However, in case the user only has EnergyPlus 8.2 installed, EnergyPlus would be found and reports error.

Here is what I did to replace the line above:

idx = 3
ep_hash = Hash.new
while ep_hash[:energyplus_exe].nil?
  break if idx < 0
  ep_hash = OpenStudio::EnergyPlus::find_energyplus(8,idx)
  idx -= 1    
end

So that it will search for the highest version of EnergyPlus while still capable to run with lower versions.

This seems to work in term of finding other version of EnergyPlus, while still reports error says certain job "did not finish successfully" when I run RunOSM in my main program, I figured I might need to modify the find_energyplus code developed by NREL or is there any other more elegant way for this without touching the source code?

Thanks!

Hello OpenStudio Gurus,

We're developing a project in Ruby that calls OpenStudio for simulation. We would need make sure it is executable across different operating systems. We had tested it in PC and Mac and next is Linux. Our plan is to test it in a virtual machine through Virtual Box in Mac.

I'm curious if anyone has tried this before, if so, could you give me some hints on the versions of Linux(supported by Virtual Box) that has been proved to support this task, or are there any tricky procedures need to be carefully attended?

I would appreciate your suggestions!

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

I met some problems while testing the ruby script:

1. EnergyPlus could not installed properly on Ubuntu 14.04: I followed the installation tutorial here and in the output of the installation it reports:

   mv: cannot move ‘/usr/local/EnergyPlus-8-3-0/energyplus.1’ to ‘/usr/local/share/man/man1/’: Not a directory

2. I guess the first problem lead to the second one: as we need call the find_energyplus in our ruby script, it reports:

   [DEPRECATION] find_energyplus is deprecated. Please use OpenStudio::Runmanager::ConfigOptions instead.

Does anyone met the same problems while install EnergyPlus in Ubuntu 14.04?