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2019-03-18 10:26:13 -0500 commented answer energyplus heating and cooling load

Set the outdoor air requirement with the DesignSpecificationOutdoorAir object. Alternatively, you can use the AirTermin

2019-03-18 10:23:57 -0500 commented answer energyplus heating and cooling load

Set the outdoor air requirement with the DesignSpecificationOutdoorAir object.

2019-03-16 12:35:23 -0500 answered a question energyplus heating and cooling load

Set the outdoor air flow rate in your fan coil units to zero and then add a DOAS air loop with terminals serving each zo

2019-03-15 15:53:16 -0500 commented question Excel File doesn't have all the data

I'm not familiar with the BestEnergy plugin. It could be there is an issue with the macros in that plugin. I suggest r

2019-03-15 10:41:02 -0500 commented question energyplus heating and cooling load

Do you have an outdoor air flow rate set in your fan coil units?

2019-03-14 11:16:11 -0500 commented question Excel File doesn't have all the data

where is this excel file from? It is not part of openstudio / energyplus software.

2019-03-13 00:45:51 -0500 commented question Excel File doesn't have all the data

excel file? there is a standard .html output file, and sometimes a .csv file of timeseries results if you request it, bu

2019-03-13 00:45:32 -0500 commented question Excel File doesn't have all the data

excel file? there is a standard .html output file, and sometimes a .csv file of timeseries results if you request it, bu

2019-03-11 18:14:10 -0500 answered a question Thermal performance of tents- What is the best way of ground modelling?

Use the Site:GroundTemperature object. The slab preprocessor and kiva tools are intended to model a permanent structure

2019-03-11 17:59:47 -0500 edited question Output Variable error

OutPut Variable error Hello all, I Try to edit and simulate the command line interface, workflow example. I want to get

2019-03-11 17:29:44 -0500 answered a question Output Variable error

The variable name should be: Zone Air Temperature not Output: Variable,, Zone Air Temperature, hourly; There is a separ

2019-03-07 15:43:09 -0500 answered a question Running OS - Dehumidification with Ideal Air Loads ON

See the ideal_loads_options and ideal_air_loads_zone_hvac measures on the UnmetHours github repository. These measures

2019-03-07 11:28:14 -0500 answered a question EnergyPlus Simulation Run Time Diagnostics

Your intuition to check the run log and .err file is correct. Some routines may take a while to converge because of bad

2019-03-07 11:18:41 -0500 answered a question Alternate ways of opening an E+ .sql file

Here are some code examples to extract data from the EnergyPlus .sql file: basic Python Python with eppy Ruby / OpenS

2019-03-07 11:10:32 -0500 answered a question Has anyone validated the DOE Reference Building Measure?

See the answer to this question about the DOE Prototype buildings. The link you reference is for ASHRAE 90.1-2004, Pos

2019-03-07 10:55:13 -0500 answered a question Drain water heat recovery as heat source to a Heat Pump?

There isn't an object to model drain water heat recovery directly in EnergyPlus, but you can still model it with some cu

2019-03-07 10:29:20 -0500 commented question What is wrong about the results table of energyplus?

Post a link to your model.

2019-03-05 14:28:17 -0500 commented question how do I resolve error processing input file in openstudio stimulation

You need to state the errors. Also, you need design days unless you've hard-sized everything in your model.

2019-03-05 10:19:05 -0500 answered a question Swap construction set by command line interface

You need to iterate over your cons array instead of **new_construction** Also, it is best practice to use snake_case fo

2019-02-28 12:37:40 -0500 commented question BEopt Optimization Running Super Slowly

Do you happen to be modeling one stratified water heater per unit?

2019-02-28 10:33:54 -0500 answered a question Code to determine the U/R value of a construction

The .thermalConductance() and .uFactor() methods on the ConstructionBase object return these values in SI units. See th

2019-02-28 09:53:58 -0500 answered a question failure running the workflow example file

The error is in the message - you need to add the 'construction named 'EXTERIOR-WALL adj exterior wall insulation' const

2019-02-27 11:34:41 -0500 commented question how do I resolve error processing input file in openstudio stimulation

what shows up in the .err file in your simulation directory? Do you have design days and a weather file specified?

2019-02-22 11:46:09 -0500 commented question Slab objects used in the DOE prototype models

Could you just run the slab pre-processor yourself? It's included with the EnergyPlus install.

2019-02-21 14:40:51 -0500 received badge  Associate Editor (source)
2019-02-21 14:40:51 -0500 edited question Program exited before simulations began

Program exited before simulations began. I am performing a simulation for a residential building with 5 thermal zones. t

2019-02-21 14:40:47 -0500 edited question Program exited before simulations began

URGENT!! Program exited before simulations began. I am performing a simulation for a residential building with 5 thermal

2019-02-21 14:40:40 -0500 commented question Program exited before simulations began

what warnings are in the .err file before this message?

2019-02-20 11:59:09 -0500 commented question Missing required property 'fenestration_surface_name'

Two ideas: (1) avoid using % or other special characters in object names, and (2) make sure your window shading controls

2019-02-20 11:24:10 -0500 commented answer Written report accompanying the DOE prototype models

@mldichter did you talk with someone at DOE? For the slab temperatures, check the prototype reports. My guess is they

2019-02-14 16:48:54 -0500 answered a question Written report accompanying the DOE prototype models

Background on the DOE Prototype buildings The DOE prototype buildings, formerly known as the commercial reference build

2019-02-14 11:01:02 -0500 commented question Modeling DOAS with VAV in energyplus?

Can you describe the system in more detail, possibly drawing a diagram and including supply air temperature setpoints an

2019-02-11 17:09:13 -0500 answered a question Definition of ASHRAE 90.1 NREL ZNE Ready 2017

NREL ZNE Ready 2017 is not a formal standard, nor is it related to ASHRAE. Instead, it is a set of efficiency parameter

2019-02-09 16:10:06 -0500 answered a question Error: Open Studio SketchUp Pro 2019 Plugin Installation

OpenStudio 2.7.0 is not compatible with SketchUp 2019. Use Sketchup 2017.

2019-02-09 16:05:45 -0500 edited answer Fraction radiant information for t12 t8 and LED

Heat gain distributions for LED lighting are given in ASHRAE RP-1681 "Low Energy LED Lighting Heat Distribution in Buil

2019-02-09 16:05:13 -0500 commented answer Cooling load is not changing when I change Window to Wall Ratio

Can you specify which values you referring too as cooling load? And do you mean "similar" or literally identical? The v

2019-02-08 13:44:58 -0500 commented question Error: Open Studio SketchUp Pro 2019 Plugin Installation

Which version of SketchUp are you using? Check the OpenStudio Version Compatibility Matrix to see if your version of Op

2019-02-08 11:37:09 -0500 answered a question Fraction radiant information for t12 t8 and LED

Heat gain distributions for LED lighting are report in ASHRAE RP-1681 "Low Energy LED Lighting Heat Distribution in Bui

2019-02-08 11:08:00 -0500 answered a question Creating ASHRAE baseline building

Read the warnings and info messages that show when you run the 'Create Baseline Building' measure. If there is an error

2019-02-07 11:33:48 -0500 commented answer VRF & DOAS - complete model?

The FSEC document explains how to make VRF curves from manufacturer data. The measure also uses curves derived from man

2019-02-06 12:07:14 -0500 commented answer Water-Cooled VRF Priority

The order of the plant equipment shouldn't impact the order of zone equipment. It's likely there is some reason your VRF

2019-02-05 11:48:52 -0500 answered a question Modeling for 179D tax deductions

This document describes the process. Model the building as is and the ASHRAE 90.1-2007 baseline and then demonstrate th

2019-02-05 11:39:08 -0500 answered a question Water-Cooled VRF Priority

For each zone, make sure that the VRF terminal units are listed as the top priority in the zone ZoneHVAC:EquipmentList o

2019-02-05 11:25:17 -0500 answered a question Cooling load is not changing when I change Window to Wall Ratio

The single-zone building has a >> 1,000 kBtu/sf EUI. You aren't seeing a large % change in cooling energy use, be

2019-02-05 10:27:59 -0500 commented answer VRF & DOAS - complete model?

@TomB see the Group Performance Tables object.

2019-02-01 15:06:31 -0500 commented answer VRF & DOAS - complete model?

There is a new object that allows you to use a performance map of manufacturer data instead of translating that data to

2019-02-01 13:09:43 -0500 commented answer Aedg template error

Do you have Design Specification Outdoor Air objects assigned to your Space Types or Spaces and heating and cooling ther

2019-02-01 13:08:21 -0500 commented answer Aedg template error

Do you have Design Specification Outdoor Air objects assigned to your Space Types or Spaces and heating and cooling ther

2019-02-01 13:06:41 -0500 commented answer Quick Tips to create geometry in Open Studio

Yes, you create zones for all floors and apply multipliers to the middle floor. You can add zone multipliers before or a

2019-02-01 10:46:10 -0500 answered a question duplicating hvac systems crashes OS

Use Zone Multipliers for a 10 story building with identical floors/units. Once you've used zone multipliers, you can ad