I've created jEPlus project for TRNSYS input file but I'm unable to find how to define objective function and input .csv file for TRNSYS project. Only .rvi .rvx files are mentioned for EnergyPlus projects.
I'm a new user of jeplus for E+ parametric analysis. I'm trying to obtain the energy consuption of a building for various orientations.
According the user guide I'm trying to extract the value of Energy Per Conditioned Building Area [MJ/m2] from the Annual Building Utility Performance Summary - Site and Source Energy table generated by E+ in the output file eplustbl.csv.
Even if the parametric simulation are correctly performed and html/tabular csv results are generated for each run, I can't understand why results are not extracted from the tables and they are not collected in the SimResults.csv file.
At the moment I'm using the following .rvi file. The version of my idf file is 8.1.009.
"csvs" : [
{
"sourceCsv" : "eplustbl.csv",
"fromReport" : "Annual Building Utility Performance Summary",
"fromTable" : "Site and Source Energy",
"fromColumn" : "Energy Per Conditioned Building Area [MJ/m2]",
"fromRow" : "Total Source Energy",
"tableName" : "TABLENAME",
"columnHeaders" : "COLUMNTITLE",
"usedInCalc" : true
}
],
Hi everyone,
I´m trying to calibrate a model using jEPlus+Ea. I´ve followed the example in the jEplus site, but I´m having problems to understand which would be the right settings for my particular case. This is what I´ve done so far:
1-I´ve prepared the JEplus project (idf, rvi and rvx files) and everything seems to be ok when I run a few simulations.
2-Then I took the Python from the example and I included it in the project.
3-I prepared a csv file with the reference consumption values (monthly- heating, dhw and cooling). Because I´m running the simulation during heating season, all the values for cooling are 0.
4-I ran a few Python tests (in the Utilities Tab) and fixed the reported errors (they where related with file location and different sizing between the reference and the output files). The last run gave me no errors.
5-I opened jEPlus+EA and launched the simulation
The problem is that, even if the simulation works, it´s not giving me as a result the solutions that are closer to my reference values, but the ones with the lower consumption values... just as if the Python code wasn´t there...
I’m a new user of jEPlus. To practice the jEplus, I select the EnergyPlus example file, 5ZoneAirCooled.idf file and set the output variable ‘Zone Air System Sensible Cooling Rate’ in rvi format. The parameter search tag is @@people@@ and the range of variations are {1,5}.
However I am not able to get SimResults, but RunTimes and SimJobIndex files are fine.
Furthermore, the example projects in jeplus.org, UK Office Building Archetypal Models v8.1, also can not get the output data.
I’m attaching idf and rvi files that I calculated.
Hi,
I am trying to learn about jEPlus and its features. So that, i did everything listed in order to open jEPlus, but I'm still having problem with opening it. I tried double clicking but nothing happens, then i also opened command line but it said "Unable to access jarfile jeplus.jar". I couldn't solve the problem, eventhough i tried many things. I would be glad if you can suggest any solutions.
Hi dear simlab-jeplus users:
1) To create job list file in a text file, it is so much better to program a general code for producing joblist.txt in a programming environment like MATLAB. Since using programming, the joblist.txt could be generated in a fraction of a millisecond for thousands of jobs. As all can see in the simlab-jeplus video tutorial, the creation of joblist.txt is time consuming and is not a good way.
2) Please bear in mind that the generated numbers using different sampling methods are up to several decimal places and sometimes E+ cannot run them, in particular for material properties of glazing. Thus it is highly recommended that the generated numbers be rounded to one or two decimal places.
3) I would like to know that for studying on the global sensitivity analysis of building energy performance, how many sample points are needed using simlab-jeplus to have a definitive and logical answer and how much time does it take to finish the sensitivity analysis process ? Based on my experience, more than 2000 sample points are needed to have a definitive sensitivity analysis (of course for variance-based method).
Bests regards,
Navid Delgarm
I am trying to use JEPLUS+EA with the definition of User Variables using the RVX file.
However, after defining a number of variables, the GUI screen is too small and I cannot scroll it (see screenshots below)!
Furthermore, my simulations are stopping after the first generation. Please, refer to my question in [url=https://unmethours.com/question/10333/jeplusea-project-stops-after-first-generation/]
Is there any limitations of the number of user vars? I attach my rvi and rvx file.
Posted by: Susanneb - 08-10-2015, 09:28 AM - Forum: jEPlus+EA
- No Replies
I was running successfully Jeplis+EA project with rvi-files. However, I wanted to get uservars defined and plotted. So I am trying to use the RVX files. But it gives me some strange error although rvi has defined the objective function:
Any idea what is wrong?
my rvi file:
Code:
eplusout.eso
eplusout.csv
Electricity:HVAC
Heating:Electricity
Cooling:Electricity
Zone Ventilation Total Heat Loss Energy
Zone Ventilation Total Heat Gain Energy
Zone Infiltration Total Heat Loss Energy
Zone Infiltration Total Heat Gain Energy]
Zone Windows Total Heat Gain Energy
Zone Windows Total Heat Loss Energy
0
"sqls" : [
{
"tableName" : "Heating_Electricity",
"columnHeaders" : "Heating Electricity [kWh]",
"sqlcommand" : "SELECT Value FROM TabularDataWithStrings WHERE (TableName='End Uses' AND RowName='Heating' AND ColumnName='Electricity')"
},
{
"tableName" : "Cooling_Electricity",
"columnHeaders" : "Cooling Electricity [kWh]",
"sqlcommand" : "SELECT Value FROM TabularDataWithStrings WHERE (TableName='End Uses' AND RowName='Cooling' AND ColumnName='Electricity')"
}
{
"tableName" : "HVAC_Electricity_Intensity",
"columnHeaders" : "HVAC Electricity Intensity [kWh/m2]",
"sqlcommand" : "SELECT Value FROM TabularDataWithStrings WHERE (TableName='Utility Use Per Conditioned Floor Area' AND RowName='HVAC' AND ColumnName='Electricity Intensity')"
}
],
I`m trying to simulate a few design days for different latitudes and longitudes, with a set of orientations for each site (lat and long info).
On energy plus I`m doing it without the weather file, beacuase I have already all the info I need form the design day.
The thing is that Jeplus uses the Latitude and Longitude from the weather file, ignoring the site info from the idf. It also ignores the info from the design day...
Do you know how could I do a parametric study without the weather file ?
![[Image: 2015-08-19_1150.png]](http://content.screencast.com/users/xandrika/folders/Jing/media/e7d6f75c-1442-4449-ad10-6b62e8cbcbf5/2015-08-19_1150.png)
![[Image: 2015-08-19_1203.png]](http://content.screencast.com/users/xandrika/folders/Jing/media/d2a924a4-2473-4b36-8f76-32ee5804ac2b/2015-08-19_1203.png)
