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2022-05-19 09:39:39 -0500 marked best answer Reducing WWR to 40%: which approach?

When you have a lot of glazing and are following ASHRAE Appendix G, you might have to reduce the glazing area in the baseline model to be no more than 40%, respecting the proportion of the proposed model for each orientation.

I see two ways of doing this:

  • Add windows on all exterior (non-adiabatic) walls, and set a WWR ratio by facade. This would be akin to using the OS/sketchup measure "Set Window to Wall Ratio")
  • Downsize your existing windows in order to be at 40% WWR overall

I'm leaning strongly towards the second option, but I might have missed something.

What do you say?

2022-05-19 05:29:53 -0500 commented answer OpenStudio Run Simulation Problem

Please mark the answer as accepted so the thread is mark as resolved (click the Check mark next to my answer below the U

2022-05-19 02:50:36 -0500 answered a question OpenStudio Run Simulation Problem

Looking at the workflow.osw, "seed_file" : "../000 - \u039e\u0395\u039d\u039f\u0394\u039f\u03a7\u0395\u0399\u039f.osm",,

2022-05-19 02:50:36 -0500 received badge  Rapid Responder (source)
2022-05-19 02:49:16 -0500 commented question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

You need to change directory to where you clone the git repository obviously :) cd /path/to/EnergyPlus && git re

2022-05-19 02:47:45 -0500 edited answer Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

Looking at the workflow.osw, "seed_file" : "../000 - \u039e\u0395\u039d\u039f\u0394\u039f\u03a7\u0395\u0399\u039f.osm",,

2022-05-19 02:44:25 -0500 answered a question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

Lookin at the workflow.osw, "seed_file" : "../000 - \u039e\u0395\u039d\u039f\u0394\u039f\u03a7\u0395\u0399\u039f.osm",,

2022-05-17 14:56:23 -0500 commented question Use External .csv file to control temperature & relative humidity setpoints (DesignBuilder/EnergyPlus)

I agree EMS/PythonPlugin is probably the way to go, to eliminate the preprocessing step (at the cost of an increase in s

2022-05-17 14:52:47 -0500 commented question OpenStudio Run Simulation Problem

Share the OSM model and EPW please. Alternatively, try with https://github.com/openstudiocoalition/OpenStudioApplicatio

2022-05-16 01:56:02 -0500 answered a question OpenStudio Application: Server Room Modeling

Put a higher load in the zone. Such as an ElectricEquipment or an ElectricEquipment:ITE:AirCooled. If you take Electric

2022-05-16 01:45:17 -0500 commented question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

CentOS is not officially supported. What are you trying to do? Just run E+ on centos? If so, for OpenStudio SDK we have

2022-05-12 01:56:57 -0500 commented question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

Could you tell us exactly what distribution of Linux you use? And the compiler and version you use? Eg output of this:

2022-05-12 01:55:57 -0500 commented question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

Could you tell us exactly what distribution of Linux you use? And the compiler and version you use? Eg output of this:

2022-05-12 01:55:39 -0500 commented question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

Could you tell us exactly what distribution of Linux you use? And the compiler and version you use? Eg output of this:

2022-05-12 01:52:30 -0500 edited question Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous

Error: call of overloaded ‘to_ubjson(json&, std::ofstream&)’ is ambiguous I'm trying to build EnergyPlus on my l

2022-05-12 01:49:41 -0500 commented answer OpenStudio SDK Connect Coil to PlantLoop

cf: PlantLoop_Impl::createTopology PlantLoop_Impl::addSupplyBranchForComponent

2022-05-12 01:49:27 -0500 commented answer OpenStudio SDK Connect Coil to PlantLoop

cf: * PlantLoop_Impl::createTopology * PlantLoop_Impl::addSupplyBranchForComponent

2022-05-12 01:48:30 -0500 commented answer OpenStudio SDK Connect Coil to PlantLoop

add_xx are helpers from https://github.com/NREL/OpenStudio-resources/tree/develop/model/simulationtests/lib addToNode d

2022-05-09 03:53:23 -0500 answered a question OpenStudio SDK Connect Coil to PlantLoop

PlantLoop::addDemandBranchForComponent is indeed the canonical way to connect a coil to the demand side of a PlantLoop,

2022-05-06 02:58:51 -0500 commented answer PTAC systems failed

@atmaca, please mark Eric's answer above as accepted then (click the checkmark to make it green)

2022-04-29 02:04:26 -0500 edited answer OpenStudio Application: Turning on/off heating and cooling in specific time periods

Try to turn off the systems that supply the heating/cooling. For eg loops can have an AvailabilityManager:Scheduled. Fo

2022-04-26 03:16:31 -0500 commented question OpenStudio Application: bug feedback for pop-up window and preferences

If you could please report feedback and bugs for the sketchup plugin directly on github that'd be great! https://github.

2022-04-26 03:13:45 -0500 edited answer Open Studio App still crashing...

If you mean to report what you clearly think is a bug, don't do it here please, go directly to https://github.com/openst

2022-04-26 03:11:31 -0500 received badge  Rapid Responder (source)
2022-04-26 03:11:31 -0500 answered a question Open Studio App still crashing...

If you mean to report what you clearly think is a bug, don't do it here please, go directly to https://github.com/openst

2022-04-26 02:32:18 -0500 edited answer Building Component Library is not loading up in OpenStudio Application

It appears to be up now. Can you try again and let me know if it works? If it doesn't try restarting the computer to get

2022-04-26 02:32:03 -0500 answered a question OpenStudio Application: Turning on/off heating and cooling in specific time periods

Try to turn off the systems that supply the heating/cooling. For eg loops can have an AvailabilityManager:Scheduled

2022-04-26 02:32:03 -0500 received badge  Rapid Responder (source)
2022-04-26 02:30:20 -0500 edited answer How to update IDF version with Python on Window?

The IDFVersionUpdater GUI simply calls the each individual fortran utilities called TransitionV-X-X-X-to-Y-Y-Y, eg Trans

2022-04-26 02:28:18 -0500 received badge  Rapid Responder (source)
2022-04-26 02:28:18 -0500 answered a question How to update IDF version with Python on Window?

The IDFVersionUpdater GUI simply calls the each individual fortran utilities called TransitionV-X-X-X-to-Y-Y-Y, eg Trans

2022-04-25 04:02:16 -0500 answered a question OpenStudio Application: Rename Air Loops, Plant Loops and Service Water Loops

Apply the measure to your model using the Apply Now feature, then go and rename them in the OS App by clicking on the do

2022-04-15 17:09:57 -0500 commented question Upgrade OS App from 1.2.0 to 1.3.0 - temperature issue

This is probably mistitled, the OS App has nothing to do with it. But rest assured I do understand how it is hard to pin

2022-03-22 07:05:14 -0500 commented answer OpenStudio Application wont open V3.3.0 file

Please note that the Windows installers for the OpenStudioApplication are now digitally signed since the 1.3.0 release (

2022-03-22 07:04:52 -0500 commented answer OpenStudio Application wont open V3.3.0 file

Please note that the Windows installers for the OpenStudioApplication are now digitally signed since the 1.3.0 release,

2022-03-14 09:29:50 -0500 answered a question OpenStudio Application wont open V3.3.0 file

Captain obvious here! You should upgrade to OpenStudioApplication 1.3.1 (which is a bug fix for 1.3.0) so that it suppor

2022-03-14 09:29:50 -0500 received badge  Rapid Responder (source)
2022-03-07 02:52:39 -0500 commented question January results issue in OpenStudio

Make sure you're not plotting the Design Days run periods in addition to your actual annual run period.

2022-03-07 02:49:52 -0500 commented question Fan:SystemModel power curve does not work

Unrelated, but what did you use to make the drawing/schematics please @Keigo?

2022-02-18 05:28:46 -0500 commented answer Radiance OpenStudio Error

Thanks for opening https://github.com/NREL/openstudio-model-articulation-gem/issues/93 (putting it for reference).

2022-02-17 14:57:04 -0500 commented answer Radiance OpenStudio Error

Is line 1320 the same as this one? https://github.com/NREL/openstudio-model-articulation-gem/blob/e3046799fb66cb9ef15bfe

2022-01-31 04:55:10 -0500 commented answer How to model/ calculate a two-axis tracking PV (in OpenStudio or EnergyPlus)?

This should probably be marked as the accepted answer now

2022-01-31 02:57:24 -0500 answered a question energy plus output converters

I'm not aware of any tool that does that automatically. But the definitive list of changes made to output is in here: ht

2022-01-28 02:15:16 -0500 commented question Does OpenStudio allows for modeling pv tracking?

Duplicate of https://unmethours.com/question/26422/how-to-model-calculate-a-two-axis-tracking-pv-in-openstudio-or-energy

2022-01-24 03:13:23 -0500 received badge  Rapid Responder (source)
2022-01-24 03:13:23 -0500 answered a question 3d animation of E+ results

OpenStudio has a measure called "View Data" which produces a 3D model that you can interact with and allows visualizing

2022-01-21 08:03:40 -0500 commented answer Scripting PAT project

Perhaps https://github.com/NREL/OpenStudio-analysis-gem ?

2022-01-18 09:43:44 -0500 marked best answer Scripting PAT project

I have a fair amount of Measures each with several measure options, and therefore do not wish to create the various design alternatives by hand as it would be too tedious. I wish to compute the different permutations based on some inner logic like "Measure A" and "Measure B" are actually alternatives for the same Energy Efficiency Measure (EEM) so they should be treated as such.

Now that PAT 2.x has be revamped and seems to use a JSON format, can I script it? I guess I need to modify pat.json, but I'm wondering if I can specifically use OpenStudio's API for this or if I need to just treat the JSON file like any other?

If I have to change the JSON itself, how can I set some parameters such as $$hashKey for designAlternatives etc.?

2022-01-18 09:21:56 -0500 commented question Radiant unmet hour

Duplicate of https://unmethours.com/question/67469/radiant-unmet-hour/