How can I run simulation for a specific duration in EnergyPlus?

asked 2023-09-06 06:52:54 -0500

epUser24
3 ●1

updated 2023-09-06 11:37:02 -0500

Aaron Boranian

13830 ●76 ●24 http://bigladdersoftware.com/

Hi everyone,

How can I run a simulation in Energy Plus on specific dates - 21 day of every month in a year? What object should I use to set sizing period like this?

I tried to use multiple SizingPeriod:WeatherFileDays objects with a one day period as 21 in every month for the whole year, but it didn't work as needed. Also I tried to set the period from 21 of January to 21 of December but it didn't work properly either.

Thank you in advance!

answered 2023-09-06 14:49:27 -0500

shorowit

10956 ●181 ●9 https://www.nrel.gov/b...

You would need to add twelve RunPeriod objects, each of which specifies a single day (e.g., Jan 21 - Jan 21).

The SizingPeriod:WeatherFileDays object has to do with auto-sizing of equipment, so it is unrelated.

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Thanks for your answer, Shorowit! I added twelve RunPeriod objects as you suggested, but I'am still getting the same result when I look at the Energy Meters report. There's only 12th month present in the table as the peak month.

Annual Value [GJ]  Minimum Value [W] Timestamp of Minimum {TIMESTAMP} Maximum Value [W] Timestamp of Maximum {TIMESTAMP}
EnergyTransfer:Facility     3.41    0.00    21-DEC-21:15    109628.30   21-DEC-15:00
EnergyTransfer:Zone:D66FD1A7-9C31-4A59-94D9-1A0E61529579-00000D61 ZONE  0.00    0.00    21-DEC-00:15    239.19  21-DEC-13:15

epUser24 ( 2023-09-07 02:39:50 -0500 )edit

Is it possible to get the actual Maximum load value with the corresponding Timestamp, considering the whole year period?

epUser24 ( 2023-09-07 02:45:56 -0500 )edit

It looks like there's a known bug about this. It appears that someone is actively working on fixing the bug and is expected to be in the upcoming release at the end of the month. In the meantime, you'll have to use other outputs from EnergyPlus that don't have this bug.