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Julien Marrec's profile - activity

2025-12-08 07:34:38 -0600 commented answer error "Creating GenericModelObject for IddObjectType 'CommentOnly’

And I fixed it here: https://github.com/NREL/OpenStudio/pull/5545

2025-12-08 07:25:02 -0600 commented answer error "Creating GenericModelObject for IddObjectType 'CommentOnly’

Well, I ended up filing it anyways: https://github.com/NREL/OpenStudio/issues/5544

2025-12-08 07:18:59 -0600 answered a question error "Creating GenericModelObject for IddObjectType 'CommentOnly’

This is happening because you have Comments in your OSM file, and it's safe to ignore. I guess the Warn should really no

2025-12-08 07:12:47 -0600 answered a question running idf against energyplus.exe

You should read energyplus --help. If you haven't requested native CSV output (OutputControl:Files), you should pass --r

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2025-12-08 07:02:47 -0600 commented question running idf against energyplus.exe

I'm having a bit of trouble understanding the question here. I think it'd help if you gave an example of the files you w

2025-11-17 13:14:40 -0600 received badge  Popular Question (source)
2025-11-14 10:35:33 -0600 commented answer How to add pip packages/Ruby gems to a OpenStudio workflow (.osw)

(I don't think you should be passing both python_path and python_home)

2025-10-24 10:08:12 -0600 received badge  Popular Question (source)
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2025-09-25 05:21:23 -0600 answered a question VRF Performance Curve, os:table input

Your Independent variables are definitely wrong. You seem to have entered temperatures in Farenheit, you need to use Cel

2025-09-24 01:59:43 -0600 marked best answer Estimate Fan pressure rise from ESP

In EnergyPlus, Fan Pressure Rise is an input to most fan objects (e.g: Fan:ConstantVolume).

MEPs will usually give you External Static Pressure (ESP), and rarely Total Static Pressure (TSP).

Since what you should input in E+ is TSP (correct me if I'm wrong), are there any rules of thumb to estimate it from the ESP and basic knowledge of what filters and coils you have, or BHP? That would be useful In early design phases.

2025-09-09 10:34:25 -0600 commented question How can we @mention a user with a space in their name?

Thansk for the double ping @"Aaron Boranian" with double quotes and @'Aaron Boranian' with single quotes! :)

2025-09-09 02:02:37 -0600 edited answer Assertion Failed on Line 313 in ZoneHVACEquipmentList

The assertion indicates that a ZoneHVACEquipmentList should always point to a ThermalZone. Somehow you ended up with an

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2025-09-09 02:01:35 -0600 answered a question Assertion Failed on Line 313 in ZoneHVACEquipmentList

The assertion indicates that a ZoneHVACEquipmentList should always point to a ThermalZone. Somehow you ended up with an

2025-09-01 02:23:17 -0600 commented question Dual OpenStudio Application license and GNU GPLv3 Compliance

@Mitchal Dichter, I would suggest you contact the osc at openstudiocoalition.org (see https://openstudiocoalition.org/ab

2025-08-21 03:49:40 -0600 edited answer ... Python OpenStudio bindings: surface.vertices() -> tuple?

I can answer as to the why. OpenStudio SDK code is C++, period. The Ruby and Python bindings are (almost) automagically

2025-08-21 03:47:36 -0600 edited answer ... Python OpenStudio bindings: surface.vertices() -> tuple?

I can answer as to the why. OpenStudio SDK code is C++, period. The Ruby and Python bindings are (almost) automagically

2025-08-21 03:45:25 -0600 edited answer ... Python OpenStudio bindings: surface.vertices() -> tuple?

I can answer as to the why. OpenStudio SDK code is C++, period. The Ruby and Python bindings are (almost) automagically

2025-08-21 03:36:26 -0600 answered a question ... Python OpenStudio bindings: surface.vertices() -> tuple?

I can answer as to the why. OpenStudio SDK code is C++, period. The Ruby and Python bindings are (almost) automagically

2025-07-09 02:39:02 -0600 commented question Heating SET Degree hours Table

I don't get what you are referring to. Please include some info of WHERE you see this (a screenshot for eg), and why you

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2025-07-03 09:30:17 -0600 commented question Adding objects, fields in OpenStudio IDD using OpenStudio SDK

I'm curious what you want to achieve here?

2025-07-03 03:18:39 -0600 commented answer How to use custom python packages in OpenStudio Measures

If you need one helper file in several measure directories, put that wherever, write a (python) script that would copy i

2025-07-03 03:16:41 -0600 commented answer How to use custom python packages in OpenStudio Measures

You should put your helper files in the resources/ subdirectory to avoid this issue, for eg resources/helpers.py in mea

2025-06-30 08:31:57 -0600 answered a question How to use custom python packages in OpenStudio Measures

You have a few options: python -m pip install --target=C:/openstudioapplication-1.9.0/EnergyPlus/python_lib -r require

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2025-06-05 01:58:27 -0600 commented question Fatal Error when running the simulation in Open Studio

Assign a construction to your fenestration ;) The easiest is to assign a Default Construction Set to your building. http

2025-06-03 04:06:23 -0600 commented answer Creation of a Water-to-Water Heat Pump in OpenStudio

Look at the DistrictCooling / DistrictHeating objects

2025-05-28 03:05:47 -0600 answered a question Creation of a Water-to-Water Heat Pump in OpenStudio

TL;DR: You don't have to define your own PlantEquipmentOperation schemes. The issue is that you do not have any supply e

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2025-05-26 03:44:11 -0600 edited answer Access to a warmUpFlag to pass in an FMU cosim

If it helps anyone, I have found a satisfying solution, I don't know if it is state of the art, but it achieves my goals

2025-05-26 03:38:54 -0600 edited question OpenStudio results in metric units

open studio results in metric ı m trying to run my simulation in si units. however, BCL library does not have in QAQC. s

2025-05-20 08:10:50 -0600 edited answer How can I control node and fan actuators in EnergyPlus via Python API without being overwritten by SetpointManagers or system logic?

My go-to when I'm working on a new implementation in EnergyPlus is to reference the example files. ASHRAE901_OfficeLar

2025-05-20 08:10:40 -0600 edited answer Actuator controled by Python API is not available in my scenario

The answer to your question #2 is yes. An actuator for the radiant system water mass flow rate can be set in kg/s. Her

2025-05-19 09:07:14 -0600 answered a question Fan motor efficiency has no impact on energy consumption

I had to revisit this today. E+ never even calculates impeller efficiency explicitly. It calculates fan power (Ptot) a

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2025-04-28 03:53:02 -0600 commented answer Downgrade E+ on mac

Install homebrew https://brew.sh/ if you don't have it already, then brew install libomp

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2025-04-25 01:59:34 -0600 answered a question Downgrade E+ on mac

Yes, you can trash it. The maintenance tool would just remove the symlinks that are placed at /usr/local/bin (see at en

2025-04-09 04:13:12 -0600 commented question Why Doesn't HVACTemplate:DedicatedOutdoorAirSystem Generate Air Loops, Nodes...

Without sharing your IDF file (or better, a MCVE), hard to know. There's the "HVACTemplate-5ZonePTAC-DOAS.idf" example f

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2025-03-19 03:15:41 -0600 edited question Create Baseline (90.10 2010) Measure gives error : OS 3.7.0

Create Baseline (90.10 2010) Measure gives error : OS 3.7.0 This is image of the Bool error. In reference with this p

2025-03-18 03:16:26 -0600 commented question After installing the corresponding version of OpenStudio for SU2017, it crashes and out immediately upon opening.

@macumber v2.9.1 and below of the NREL/OpenStudio bundles the sketchup plugin. cf https://github.com/NREL/OpenStudio/wik

2025-03-10 16:04:34 -0600 edited answer Help With Custom Schedule From File

I recently added the ability to import a ScheduleFile into the OpenStudioApplication (1.9.0) in this pull request, but I

2025-03-10 15:53:33 -0600 answered a question Help With Custom Schedule From File

I recently added the ability to import a ScheduleFile into the OpenStudioApplication (1.9.0) in this pull request, but I

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