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Simulation Timestep vs. OutputVariable Reporting Frequency

asked 2017-02-20 15:11:12 -0500

BControl's avatar

updated 2017-03-31 16:01:46 -0500

In EnergyPlus, I am trying to report the output variable in a different time frequency, comparing to the simulation Timestep. Is it possible, or it needs to be post-processing?

For example, the simulation Timestep is set as 60, is it possible to output the energy usage in 0.5h time interval, not hourly time interval?

    60;                       !- Number of Timesteps per Hour


Output:Variable,,Facility Total Purchased Electric Energy,Timestep;
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answered 2017-02-20 15:30:35 -0500

updated 2017-02-21 04:15:17 -0500

You can't.

You have to request output at the Timestep level, which will give you in your case output at one-minute interval (60 timesteps per hour) and then do post-processing to get 30-min interval average / sum depending on the variable you're looking at (any consumption would be a sum, any rate would be an average)

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Thanks for your answer! That's helpful to know that EnergyPlus cannot do this. BTW, how did you get the 0 of 60 to a superscript?

BControl's avatar BControl  ( 2017-02-20 17:26:17 -0500 )edit

On a french mac keyboard, the degree sign ° is right next to zero, I must have made a mistake when typing. Worth nothing that there is a <sup></sup> tag on Unmet Hours, but that won't produce a degree sign, it'll do this: 0. If you have a Windows machine and a numeric keypad, press ALT and while maintining it type either 0176 or 248 on the numeric keypad to produce a ° (it looks like a lot of work initially, but when I was working in the US I was using it many times a day without flinching)

Julien Marrec's avatar Julien Marrec  ( 2017-02-21 04:17:56 -0500 )edit

I see. Thanks for your explanation. That's very insightful!

BControl's avatar BControl  ( 2017-02-21 10:18:54 -0500 )edit

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Asked: 2017-02-20 15:11:12 -0500

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Last updated: Feb 21 '17