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2019-09-18 09:41:01 -0500 commented question Why do i get blank charts when i run a simulation?

See if there's a BEopt Error Log window open in the background. Refer to the Running BEopt > BEopt Error log topic in

2019-09-18 09:40:40 -0500 commented question Why do i get blank charts when i run a simulation?

See if there's a BEopt Error Log window open in the background. Refer to the Help > Running BEopt > BEopt Error lo

2019-09-13 17:24:04 -0500 answered a question In BEopt, is there a way to determine what timestep was used for a simulation that was completed previously?

The easiest way is to create a new case (it will be a copy of the case it's based off of, excluding output), click the r

2019-09-12 08:17:40 -0500 edited question Does anybody know which output shows the solar gains and the transmission losses of my building in EnergyPlus?

Hello Unmet Hours Community, does anybody know which output shows the solar gains and the transmission losses of my buil

2019-09-12 08:16:58 -0500 answered a question Does anybody know which output shows the solar gains and the transmission losses of my building in EnergyPlus?

Look at the .rdd file after doing an EnergyPlus run to see all possible outputs that you can report. Search that file fo

2019-09-12 08:10:55 -0500 answered a question Packaged Terminal AC (PTAC) Units

If the PTAC uses a heat pump for heating, use BEopt's Mini-Split Heat Pump category. Otherwise, use BEopt's Room Air Co

2019-09-10 16:13:21 -0500 answered a question Do you know why my new finished basement foundation wall option is not saving?

I can reproduce the issue, it's a bug in BEopt that only seems to affect this category. This will be fixed for the next

2019-09-10 08:50:08 -0500 edited answer Fan energy with Zonehvac:IdealLoadsAirSystem in EnergyPlus

There might be an easier way, but you could do this via an EMS program. Add a sensor for the ideal system airflow rate,

2019-09-09 21:15:03 -0500 edited answer Fan energy with Zonehvac:IdealLoadsAirSystem in EnergyPlus

There might be an easier way, but you could do this via an EMS program. Add a sensor for the ideal system airflow, calcu

2019-09-09 21:14:37 -0500 answered a question Fan energy with Zonehvac:IdealLoadsAirSystem in EnergyPlus

There might be an easier way, but you could do this via an EMS program. Add a sensor for the ideal system airflow, calcu

2019-09-09 10:38:22 -0500 answered a question How to import .idf file to BEopt?

BEopt cannot import IDF files, it can only export IDF files.

2019-09-04 16:42:40 -0500 commented answer BEOpt TDV results check and baseline reference point

Via the Select dropdown, you can choose the reference design.

2019-09-03 15:50:02 -0500 commented answer Constant Mechanical Ventilation with AirLoopHVAC:Unitary:Furnace:HeatCool

Yes, you can still add the ZoneHVAC object, you just need to attach it to a single thermal zone. You'll also want it to

2019-09-03 12:08:33 -0500 answered a question should the below grade portion of the building wall be included in the wall area for purposes of calculating window to wall ratio in BeOpt?

The wall area, for purposes of window-to-wall ratios, does not include the below-grade wall area. You can confirm this b

2019-08-29 09:16:17 -0500 answered a question Solid windows in openstudio geometry

It sounds like it is a bug with the OpenStudio geometry viewer. I found a similar bug report here: https://github.com/NR

2019-08-27 18:03:59 -0500 edited answer Constant Mechanical Ventilation with AirLoopHVAC:Unitary:Furnace:HeatCool

The typical solution to modeling a residential ERV is to use the ZoneHVAC:EnergyRecoveryVentilator object. The advantage

2019-08-27 18:03:08 -0500 answered a question Constant Mechanical Ventilation with AirLoopHVAC:Unitary:Furnace:HeatCool

The typical solution to modeling a residential ERV is to use the ZoneHVAC:EnergyRecoveryVentilator object. The advantage

2019-08-23 13:38:05 -0500 commented question Constant Mechanical Ventilation with AirLoopHVAC:Unitary:Furnace:HeatCool

What kind of a mechanical ventilation system are you trying to model? Bathroom exhaust fan? ERV/HRV? Something else?

2019-08-19 11:09:38 -0500 answered a question In BEopt, is there a quick way to make 'My Design' identical to the B10 Benchmark Reference?

It's a good question/suggestion. Unfortunately, there is not a way to currently do this. You can create a user-defined r

2019-08-13 17:05:59 -0500 answered a question PreProcess for Batch run

It is safe to ignore this message. BEopt does not need/use any of the EnergyPlus PreProcess tools.

2019-08-12 19:03:53 -0500 commented question What is the maximum ach(infiltration) for residential buildings?

Can you give more context to your question? There's obviously no physical maximum value...

2019-08-12 15:23:02 -0500 commented question Convection coefficient is modified when using Kiva

Perhaps this is related to https://github.com/NREL/EnergyPlus/pull/7202, which was implemented for E+ v9.1?

2019-08-12 15:20:49 -0500 answered a question Are other benchmarks or reference homes available in BEopt besides B10 (i.e., IECC2009)?

No, you will have to create a user-defined reference for these reference types. Though note the language from the Buil

2019-07-30 15:55:35 -0500 commented question Default minimum outdoor temperature for DX coils

See https://github.com/NREL/EnergyPlus/pull/4383 and https://github.com/NREL/EnergyPlus/pull/6213 for similar changes to

2019-07-22 11:22:45 -0500 commented answer Error in simulation: BEopt Unable to delete the directory ....../TEMP1 perhaps file is in use?

It's possible your anti-virus (or similar) software is causing problems. Maybe you can try disabling it?

2019-07-22 11:21:37 -0500 commented question Error when trying to start simulation: Unable to delete the directory ....../TEMP1 perhaps file is in use?

Duplicate of https://unmethours.com/question/38014/error-in-simulation-beopt-unable-to-delete-the-directory-temp1-perhap

2019-07-18 11:22:53 -0500 commented answer About the implication of the timestep in simulation

If you run EnergyPlus with a sub-hourly timestep, you can still request outputs with an hourly frequency.

2019-07-17 10:47:44 -0500 edited question severe error about illegal value for convection coefficients on partition holes, when using calculated natural ventilation

severe error about illegal value for convection coefficients on partition holes, when using calculated natural ventilati

2019-07-15 10:10:49 -0500 edited answer BEopt boiler results possibly inaccurate?

There is a bug in the EnergyPlus (v8.8) foundation heat transfer model, which for some reason is only triggered in your

2019-07-15 10:10:03 -0500 answered a question BEopt boiler results possibly inaccurate?

There is a bug in the EnergyPlus (v8.8) foundation heat transfer model, which for some reason is only showing up in your

2019-07-13 14:29:24 -0500 commented question BEopt boiler results possibly inaccurate?

Can you provide your BEopt project file via, e.g., Dropbox or Google Drive? I did some quick runs of 98% gas furnace vs

2019-07-12 14:12:25 -0500 commented question PlantEquipmentList Run error in EnergyPlus

Can you provide your IDF file via, e.g., Google Drive or Dropbox?

2019-07-12 08:22:23 -0500 commented answer Parametric Analysis Tool - Downselect Logic - Location Options

Indeed "completed invalid workflow" will show up for any datapoint that was filtered out due to downselection. You shoul

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2019-07-09 08:50:51 -0500 edited question Energy Plus EMS errors with output variable name

Energy Plus EMS errors with output variable name Hi, I`ve got some errors in Energy Plus EMS as below - could anyone hel

2019-07-09 08:06:01 -0500 edited question How to create a pressure controlled zone.

How to creat a pressure controlled zone. I am aiming to design a zone with positive pressure using AirflowNetwork withou

2019-07-08 13:23:51 -0500 edited question Heating demand calculation with HVAC Systems

Heating demand calculation with HVAC Systems Dear Forum members, I am simulating a residential building with Energy Pl

2019-07-08 09:39:41 -0500 edited question Heating demand calculation with HVAC Systems

Heating demand calculation with HVAC Systems Dear Forum members, I am simulating a residential building with Energy Pl

2019-07-08 09:38:35 -0500 commented question Assign building unit to spaces?

What do you mean when you say "it doesn't work"? None of the spaces are assigned to the unit? Are you sure the line spac

2019-07-08 09:36:47 -0500 commented question Parametric Analysis Tool - Downselect Logic - Location Options

Do the datapoints run successfully when you leave out the downselect logic?

2019-07-08 09:32:16 -0500 edited question Assign building unit to spaces?

Assign building unit to spaces? Hello, Could some one can tell me how can I assign the building unit to the spaces usin

2019-07-03 16:13:54 -0500 commented answer Demand response in BEopt

There is no way to implement more complicated algorithms using the interface. However, you can make modifications to t

2019-07-03 14:49:16 -0500 commented answer Demand response in BEopt

Correct, BEopt would pick the 10 days with the highest (avg or max) temperature independent of utility rates. The reason

2019-07-03 14:16:59 -0500 answered a question Demand response in BEopt

Have you seen the description in the BEopt help file? See the section Input > Site Input Screen > Other > Deman

2019-07-02 20:20:09 -0500 commented question Openstudio surface matching hangs while matching Model

It sounds like you're hitting the same issue as this: https://github.com/NREL/OpenStudio/issues/2706

2019-07-01 17:38:43 -0500 edited question How to use ClimateZone Class

How to use ClimateZone Class I am writing as I am confused about the ClimateZone Class in the OpenStudio api When I add

2019-06-28 11:19:41 -0500 edited question how to fix severe error=AirLoopHVAC:Unitary:Furnace:HeatCool = ZONE UNITARY FURNACE WITH DX COOLING

how to fix severe error=AirLoopHVAC:Unitary:Furnace:HeatCool = ZONE UNITARY FURNACE WITH DX COOLING I implemented the Ex

2019-06-27 12:22:10 -0500 answered a question Does BEopt have a setting to control for differences in delivered vs estimated efficiency in Optimization mode i.e., a safety factor or margin of error?

BEopt does not have this capability. The optimization search is solely driven by the user-specified y-axis metric (e.g.,

2019-06-26 00:01:14 -0500 edited answer Having Issues Accessing Timeseries csv output for PAT

You should be calling the openstudio.exe file, as the documentation suggests, not the openstudio_cli.rb file. C:\opens

2019-06-25 23:18:10 -0500 answered a question Having Issues Accessing Timeseries csv output for PAT

You should be calling the openstudio.exe file, as the documentation suggests, not the openstudio_cli.rb file.