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Julien Marrec's profile - activity

2023-01-27 02:27:11 -0600 answered a question Dymola-Python Interface. No module named Dymola

Without your test script or more info, it's hard to tell whether you have incorrectly configured the path to the Dymola

2023-01-27 02:06:59 -0600 answered a question gbXML - RectangularGeometry and PlanarGeometry

The OpenStudio gbxml forward translator at least writes both. The RectangularGeometry defines a kind of an area-equiva

2023-01-26 02:00:55 -0600 commented question indoor temperature does not decrease after adding insulation

I agree with what Denis and Aaron said. The likely cause is the fact that the building has less ability to cool itself d

2023-01-23 02:55:47 -0600 answered a question Can't get openstudio 3.5.1 installed with SU 2020

The installation steps are described on: https://github.com/openstudiocoalition/openstudio-sketchup-plugin/wiki/OpenStud

2023-01-23 02:51:17 -0600 answered a question Is it possible to perform group Simulation in Python API?

You can use the python multiprocessing module to run multiple simulations in parallel. A short example can be found here

2023-01-17 02:41:30 -0600 received badge  Rapid Responder (source)
2023-01-17 02:41:30 -0600 answered a question Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

Posted as an issue here: https://github.com/NREL/EnergyPlus/issues/9798 With a Pull request fixing it at https://github

2023-01-17 02:32:11 -0600 commented question Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

I think you are right. That said, this type of things should be best posted as an issue directly at https://github.com/N

2023-01-09 02:27:33 -0600 commented answer OpenStudio - simulation of open doors several times a day

same in openstudio. You can even do that in the OpenStudioApplication.

2023-01-06 06:28:03 -0600 marked best answer Merge two OpenStudio files

I've created an osm file from Honeybee, and later on I realized I forgot a detached space. I created a second .osm file for this space.

What's the best way to integrate my second .osm file in the first one, without duplicating schedules and constructions etc.? I just want the geometry.

2023-01-05 02:56:10 -0600 answered a question OpenStudio - simulation of open doors several times a day

For a crude way to do it, schedule your infiltration object. For example, you can use a SpaceInfiltrationDesignFlowRat

2023-01-05 02:56:10 -0600 received badge  Rapid Responder (source)
2023-01-04 15:39:39 -0600 marked best answer Simulation time explodes with AirLoopHVAC:UnitarySystem

I just added an AirLoopHVAC with an Outdoor Air System and an AirLoopHVAC:UnitarySystem .

The AirLoopHVAC:UnitarySystem itself contains a Coil:Cooling:WaterToAirHeatPump:EquationFit, aCoil:Heating:WaterToAirHeatPump:EquationFit and a supplemental heating Coil:Heating:Water as well as a Fan:VariableVolume, and it is set to Control Type Load with one of the two zones it serves (a lobby and a vestibule) as a control zone.

My simulation time completely bloated. It went 08min50 to 1h35min (and 15 minutes later it's still writing the SQL file...), and I'm getting convergence issues during the warmup. I didn't change anything else.

Is there anything I can do to avoid having such a long simulation time?

Any workarounds I could use such as wrapping a single coil in a dedicted unitary system set to Setpoint or something? This is making my model completely useless.

2023-01-02 07:21:23 -0600 commented question How to fix "Too many fields for object: FenestrationSurface:Detailed" error opening IDF files.

Can you include the IDF snippet for the specific FenestrationSurface:Detailed that is throwing the error please?

2023-01-02 07:10:54 -0600 answered a question Floor of a temporary warehouse

Unless you define soil properties, and/or Site:GroundTemperature:XXX objects (eg Site:GroundTemperature:Surface) it'll

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2023-01-01 13:25:52 -0600 commented question Floor of a temporary warehouse

Make a concrete floor then?

2022-11-16 20:00:44 -0600 commented answer How does EnergyPlus differentiate between inside and outside walls?

Please remember to mark an answer as Accepted (green check mark below the up/down vote buttons) so the thread is marked

2022-11-16 19:59:42 -0600 commented question [Openstudio] cannot connect to the Internet,help!!!

Are you connected to the internet? If so, it's a firewall issue, contact your IT department? What version of the OpenStu

2022-11-07 02:30:02 -0600 commented question Surface temperature out of bounds

Do you have an A/C system in your model? Is it running as expected and meeting setpoint? Have you added some infiltratio

2022-11-07 02:26:40 -0600 answered a question How does EnergyPlus differentiate between inside and outside walls?

As Denis said, generally. For your specific application, which is modeling one room as part of a larger building, the e

2022-10-31 12:51:20 -0600 received badge  Popular Question (source)
2022-10-21 02:28:50 -0600 commented question Is the UnitarySystemPerformance:Multispeed object supported for use with variable speed DX coils

thanks for opening 4715, really helpful!

2022-10-20 13:32:27 -0600 commented question Is the UnitarySystemPerformance:Multispeed object supported for use with variable speed DX coils

If the correct behavior is to NOT generate an UnitarySystemPerformance:Multispeed when you use a Variable speed coils (t

2022-10-20 08:13:16 -0600 commented answer Openstudio error: simulation failed to run, with exit code 1

Please mark the answer as accepted so the thread is marked resolved (green check mark below the Up/Down vote buttons). T

2022-10-19 15:16:30 -0600 commented question Is the UnitarySystemPerformance:Multispeed object supported for use with variable speed DX coils

My understanding is that the Number of Speeds and UnitarySystemPerformance:Multispeed is specifically for multispeed coi

2022-10-17 07:49:03 -0600 commented answer Openstudio error: simulation failed to run, with exit code 1

E+ doesn't run because your macOS system version is too old to support the std::filesystem from C++17. What version are

2022-10-17 03:24:52 -0600 answered a question Openstudio error: simulation failed to run, with exit code 1

On the Run Tab, click the "Verbose Output" checkbox at the top and try to see if you can get more information. Also, tr

2022-10-14 02:24:43 -0600 answered a question Edit "IDF" fields with "/" (forward slash) using Eppy

I would suggest you start using IPython (= a better interactive prompt) or a Jupyter notebook (which uses IPython, and a

2022-10-14 02:24:43 -0600 received badge  Rapid Responder (source)
2022-10-14 02:11:58 -0600 commented question can't open OpenstudioApplication on my new pc windows11

Have you seen my answer below?

2022-10-12 01:59:37 -0600 commented answer Missing required property 'air_inlet_node_name'

Glad you got it sorted.

2022-10-11 06:57:43 -0600 commented answer Missing required property 'air_inlet_node_name'

cf image I added in the two years old answer above (The question was answered (with what limited information was given).

2022-10-11 06:56:43 -0600 commented answer Missing required property 'air_inlet_node_name'

cf image I added in the two years old answer above.

2022-10-11 06:56:02 -0600 edited answer Missing required property 'air_inlet_node_name'

You have a few coils such as Coil:Cooling:Water and Coil:Heating:Water somewhere in your model that are likely connected

2022-10-11 06:52:59 -0600 commented answer Missing required property 'air_inlet_node_name'

You seem to assume there must be a bug, but there are none. The AirTerminalSingleDuctVAVReheat is the air side component

2022-09-22 02:25:41 -0600 commented question DesignBuilder LEED v4 reporting "Subscript out of range"

This looks like an issue in the code for the reporting script. This is typically something that happens when you try to

2022-09-15 02:16:15 -0600 commented question Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working

Yeah so the the Key has to be the object's name, not the Zone it's in.

2022-09-14 11:02:21 -0600 edited answer Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working

I suggest having Output:VariableDictionary in the IDF format so you can copy from the .RDD to your IDF file without erro

2022-09-14 11:02:03 -0600 answered a question Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working

I suggest having Output:VariableDictionary in the IDF format so you can copy to your IDF file without error: Output:Var

2022-09-14 11:02:03 -0600 received badge  Rapid Responder (source)
2022-09-14 10:57:42 -0600 commented question Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working

Can you post the actual IDF snippet for your Output:Variable? I bet that's the issue.

2022-09-14 10:57:15 -0600 edited question Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working

Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working Hi, I am trying to setup a Baseboard

2022-09-14 10:56:55 -0600 edited question Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working

Output Variable associated with ZoneHVAC:Baseboard:Convective:Electric not working Hi, I am trying to setup a Baseboard

2022-09-06 03:59:01 -0600 edited answer Where to find Python API for E+ examples?

A couple of places to look at: E+ internal API tests: EnergyPlustst/EnergyPlus/api I have an example notebook: jmarrec

2022-09-06 03:57:37 -0600 answered a question Where to find Python API for E+ examples?

A couple of places to look at: https://github.com/NREL/EnergyPlus/tree/develop/tst/EnergyPlus/api https://github.com/j

2022-09-06 03:56:26 -0600 edited answer Python plugin and library workflow

Note that this will be available in the upcoming release of OpenStudio SDK (the one after 3.4.0). Please refer to OpenSt

2022-09-06 03:55:37 -0600 answered a question Python plugin and library workflow

Note that this will be available in the upcoming release of OpenStudio SDK (the one after 3.4.0). Please refer to https:

2022-09-06 03:52:41 -0600 answered a question how does get_trend_sum() api work?

Read the documentation: https://nrel.github.io/EnergyPlus/api/python/datatransfer.html#datatransfer.DataExchange.get_tre