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Issues with jEPlus Simulation: outputs not calculating

asked 2024-07-25 10:12:53 -0500

updated 2024-07-25 17:14:56 -0500

Hello everyone, I'm having trouble with my jEPlus simulation. Despite entering the desired outputs in the RVI file, I'm not getting any results. Here are the details of my setup:

HVAC System: PTAC DX Cooling and Electric Heating Building Size: 44m²

Heating capacity @@hcap@@ : Interval between 2000W and 4000W with a step of 500W Cooling Capacity @@ccap@@: Interval between 2000W and 4000W with a step of 500W

Coil:Heating:DX:SingleSpeed,
 PTHP 1 Spd DX Htg Coil,                 !- Name
 Always On Discrete hvac_library,        !- Availability Schedule Name
 @@hcap@@ ,                                   !- Gross Rated Heating Capacity {W}

My rvi file :

eplusout.eso
eplusout.csv
Zone Air Temperature
Site Outdoor Air Drybulb Temperature
0

Despite setting up everything correctly, the outputs specified in the RVI file (eplusout.csv and eplusout.eso) are not present in the AllCombinedResults Excel file. The simulation log indicates that EnergyPlus completed successfully, but the output file does not contain the expected calculated outputs, only the time in seconds.

Why are the specified outputs not appearing in the AllCombinedResults Excel file despite the simulation completing successfully? Are there any specific settings or configurations that I might be missing in my IDF or RVI files to ensure the outputs are correctly generated?

Any guidance or suggestions would be greatly appreciated. Thank you in advance for your assistance!

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Can you show what the RVI section on the jEPlus result collection tab looks like?

Yi Zhang's avatar Yi Zhang  ( 2024-07-29 05:01:42 -0500 )edit

Hello sir, The AllCombinedResults tab contains these elements only : #,Job_ID,WeatherFile,ModelFile,@@ccap@@,@@hcap@@,Message,Warnings,Errors,Hours,Minutes,Seconds, and no RVI section. I couldn't upload the file so I tried my best to explain it to you.

KAWTHAR's avatar KAWTHAR  ( 2024-07-31 04:19:53 -0500 )edit

I mean, can you take a screenshot as such to show the settings?

Yi Zhang's avatar Yi Zhang  ( 2024-08-01 05:03:32 -0500 )edit

Sure! Here it is. I've looked everywhere, including the JEPlus website, to find a solution, but unfortunately, I haven't been able to figure it out. It would be great if you could help me resolve this issue. The parameters here are just to test if the simulation runs. The EnergyPlus file does simulate, but it seems like I'm not receiving any results from JEPlus.

KAWTHAR's avatar KAWTHAR  ( 2024-08-01 05:47:59 -0500 )edit

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answered 2024-08-01 10:03:43 -0500

Yi Zhang's avatar

There are a few things to check. First, if your IDF model requests the output variables with the Output:Variable blocks, and at what frequencies (hourly, runperied etc.). In the result collecting section in jEPlus, you need to specify the same frequency as the IDF produces. In your test RVI, you have zone and outside temperatures. Check if they are reported as runperiod in the IDF.

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Asked: 2024-07-25 10:12:53 -0500

Seen: 124 times

Last updated: Aug 01