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Which softwares to customize EPW? Hello community, which softwares (Elements, EnergyPlus weather coverter, and which oth

Which softwares to customize EPW? Hello community, which softwares (Elements, EnergyPlus weather coverter, and which oth

Which softwares to customize EPW? Hello community, which softwares (Elements, EnergyPlus weather coverter, and which oth

Hello @khadidja20 its an interesting thermal performance, the temperature increases because the effect of insulation and

Gravel Material values for simulation Hello community, does any knows any literature with report the suggested values fo

Validate the simulation results Energyplus Hello community, which methods do you suggest with the purpose to validate th

how simulate roof ballast in energyplus? hello community, how could simulate roof ballast in Energyplus, can anyone made

Hello, model the room with their construction material layers, if the walls are interior walls in the building the bound

Hello, check the thickness of the envelope layers, in the simulation EnergyPlus only reads 2mm minimum or major for thic

Hello the boundary condition could be internal wall temperature because your base are measured data for one room, put sp

check a templete EnergyPlus 8.9 .idf file in the examples directory and open it how .txt file, verify the sintaxis and s

Yes the boundary conditions can affect your result, the surface matching tool not always work with accuracy, for better

Hello, try drawing in openstudio then export the model in .xml format then import to DB, more easy draw the geometry

Another option to edit weather data more freely, try with some datasheets to edit and convert the data to .epw, you coul

First solve the severe errors, then run simulation again and paste the text of .err to check why ended

Hello, i recommend do the calibration with the comparation of the average measured and average simulated hourly data, wi

Could be a value with the material properties in the walls, ceiling or roof configurations, i recommend specifically che

You could try with this: first export the model in gbXML and then import the gbXML model to your earlier OS version, gre

for automatic parametrics use JEPLUS or manual sesitivity analysis for manual parametrics

Could be difference in material properties or difference in the walls, ceiling or roof configurations, do you check the

Check the directory of weather data file, the name of the weather data file and the directory adress doesn't be very ext

Check the directory of weather data, this dont be very extensive

Hello, i suggest view some examples of materials with their thermophysical properties go to EnergyPlus console then IDF Editor, open the .idf of ASHRAE materials, then you will see examples of materials with their ASHRAE data values.

here are some values, i had use this page: For the thermal absortance aka emmissivity http://www.engineeringtoolbox.com/emi... http://www.engineeringtoolbox.com/rad...

For the solar absortance aka the complement value for the reflectance or reflectivity values http://www.engineeringtoolbox.com/sol... example: White Dutch tile has an 0.18 solar absortance value, then has an 0.82 reflectance value

Hello, i work with Legacy plugin too, could you post a screen capture of the problem? Could be an instalation problem or incompatibility plugin with Sketchup version problem. Greetings!

hello, try doing the simulation in this way: 1.open your final model with shading surfaces (overhangs) 2.save your model with .idf format 3.do not do the simulation with OpenStudio, run directly with EnergyPlus 4.then the simulation and when you have the results, open again the .idf, the overhangs will be there

example: 12z hour climatological values in the meteorological station will be the 12z+1 hour = 13 hours climatological values for your local time

hi,for the .epw you will need do the conversion of solar time because the acquired data in the meteorological stations works with the format Z hour (GMT time). Then you have to convert this hour to your local time to know which values belongs to each hour, this work can be tedious and start is difficulty. Firstly,i suggest to configure a .xls template to make the conversion. For your location, the first climatological values for the first local hour in the customized .epw will be the hour Z values after the begin of the year of study

Other option is using an alternate software for simulation, i suggest Ecotect because has a great graphical interface and it works with Radiance too, but an simulation work with Ecotect will have much less accuracy in comparation with the actual accuracy and validation of the results obtained using the core simulation EnergyPlus and their graphical interfaces like OpenStudio and DesignBuilder.

Hello, i use EnergyPlus with .epw files and run my simulations with daylight saving time, my answers are in the same order that your questions:

1.If your .epw are a typical year (a theorical year of 5 or more years), in each hour of each day the values will be a representative average of the years that conform the typical year. If your .epw are a test reference year, the values of each hour concern only for a specific year choosing for the simulation.

2.The .epw has a format and structure concerning only for the specific values of the climatological variable contained, the daylight saving period is configured in your simulation software.

3.The .epw has in its structure the data of latitude and longitude, but in addition you have to put this values in your simulation software and it calculates the solar position and shadows during the simulation process.

Hope this info help you, Greetings community!

1. Hello Again, thanks for specify your doubts. The first temperature of the new .epw file have to be an average exterior temperature (mean air temperature) from 00:00-01:00, because the average temperature value will be representative from the first hour, then the next average hour value will be the representative of the second hour and successively
2. The simulation program calculates the solar track (hourly use + or - hours from GMT) using solar geometry. This is possible because the particular geographical ubication values latitude, longitude, and high above sea specified in the .epw data.
3. Because you will use an .epw and a part of its essential data in the structure is its geographical ubication, its not possible to work without solar track, consequently each point on the planet have an solar and specified track.
4. The hip, sin, cos, zenith, etc. are values that the program needs to calculate solar trayectory based in solar geometry, this data are very important for the simulation, and each city has specified values, again it depends of your point in the planet for work the simulation.

What simulation program will use? for which city will do the simulation?

Greetings community!

Thank you very much for your answears, this are good news, i keep updated about Big Ladder news! Greetings!

I follow EnergyPlus and Openstudio Legacy plugin since two year, i have seen the publication of the Openstudio Legacy plugin 1.0.14 release in the Github page for the EnergyPlus 8.4 version. I want to ask you a few questions:

1. Some time has pass since EnergyPlus 8.5 release, do you know when there will be a release of 1.0.15 Openstudio Legacy plugin for EnergyPlus 8.5 version?

2. What are the disadvantages of the idf done with Openstudio Legacy 1.0.14 plugin and run with the EnergyPlus 8.5?