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hourly heating and cooling loads for one year

asked 2016-05-16 13:22:44 -0500

shahin1992's avatar

updated 2016-05-22 21:38:51 -0500

Is there a way to get heating and cooling loads aggregated as a total value for each hour in one year?

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Please add the software you are using (from your previous question, I believe you are using openstudio). Also, be judicious in your use of keywords. For instance, simulation is not a good keyword, because it essentially applies to every question on this site. :)

__AmirRoth__'s avatar __AmirRoth__  ( 2016-05-17 08:36:39 -0500 )edit

thank you very much for your reply, the information and your help. yes, i'm using openstudio to run the simulation, i could get the thermal loads for one day through simulation over both open studio and Energyplus but i get it in a 10 min period for one day yet i still need to get the hourly loads for one year. here are the simulation files, link text Best regards.

shahin1992's avatar shahin1992  ( 2016-05-17 21:45:08 -0500 )edit

Your link is to the generic so we can't see your attachment.

Jamie Bull's avatar Jamie Bull  ( 2016-05-18 01:31:09 -0500 )edit

link textlink textlink text can you please check the files now ? i could get the loads for one day but can't get the annual one? and i don't know what day is that! regards

shahin1992's avatar shahin1992  ( 2016-05-19 04:58:17 -0500 )edit

Can you make a clear effort to ask clearer questions please? What you're asking is probably very easy, but this is so tedious... We shouldn't have to guess what you're asking and have to answer 4 different questions in the hope that we'll hit what you want.

Julien Marrec's avatar Julien Marrec  ( 2016-05-23 02:54:37 -0500 )edit

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answered 2016-05-23 02:53:52 -0500

Do you want:

  • The total cooling and heating load (as in energy) for one year = 2 numbers

    • For this, if the variable is listed as "HVAC Sum" - which is generally the case for any variable reported in Joules - you can report the variable as RunPeriod like @Waseem said
  • Each individual hourly load value for both cooling and heating (as in demand) = 8760 * 2 numbers.

    • For this, report the variable at timestep Hourly.


  • Are you asking about what variable to report? If so, it's been asked several times already, see Best output:variable for zone heating / cooling load for example.

  • Or are you asking how you can add the specific variable within openstudio when you don't see it in the list? First, both of the variables mentioned in the post I just linked are available right away... Anyways, there's a measure for that, go check the BCL, by typing "add output" you see plenty of measures

Finally, a couple of points:

  • Make sure you are actually running the simulation for a whole year: under "Simulation Settings" tab, put RunPeriod from Jan 1 to Dec 31, and make sure you have checked "Run Simulation for Weather File Run Periods"
  • The eplusssz.csv and epluszsz.csv are generated for the sizing periods only. Your outputs will be in the SQL file and the .eso file. If you want it to be generated in csv, just do a search on unmet hours it's been covered more than once (hint: there's a measure to generate a csv export from a meter (see BCL link I gave you...), or you can run the idf in EP-Launch, or you can learn how to query the SQL file).
  • The file that you linked, I don't see any problem with it
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thank you very much for your answer and the highly appreciated information you are sharing with me. yes what i needed to do was to get Each individual hourly load value for both cooling and heating (as in demand) = 8760 * 2 numbers while i didn't know the best output variable to use for zone cooling and heating loads and now i know thanks to you.

shahin1992's avatar shahin1992  ( 2016-05-24 00:53:52 -0500 )edit

answered 2016-05-20 11:27:01 -0500

Waseem's avatar

updated 2016-05-20 14:39:49 -0500

I think what you have to do is to change the output option to runperiod (this will output runperiod energy consumption e.g. annual energy consumption if you are running annual simulation). Please see picture below. From your csv files it looks like you are outputting daily consumption and other parameters at every timestep.

image description

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Picture is missing :)

Julien Marrec's avatar Julien Marrec  ( 2016-05-20 12:40:57 -0500 )edit

oops, just added it (though it is not of very high quality but I assume it would be OK)

Waseem's avatar Waseem  ( 2016-05-20 14:42:26 -0500 )edit

thanks for your answer but this is not what i'm looking for, in this list there is no option to get loads as a total number for heating and cooling, it's about very specific loads which i currently don't need. i need a way to get a file just like the one i shared but hourly and given for one year. regards

shahin1992's avatar shahin1992  ( 2016-05-21 03:15:56 -0500 )edit

answered 2016-05-20 12:11:34 -0500

J Monteiro's avatar

updated 2016-05-20 12:11:54 -0500

But basically what you want is annual energy consumption for heating and cooling.

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Not an answer, is it?

Julien Marrec's avatar Julien Marrec  ( 2016-05-20 12:40:40 -0500 )edit

no, i don't need the annual heating and cooling, i need the hourly one for one year period. check the file i shared above. i need to do a one like it that will run for a year not one day. regards

shahin1992's avatar shahin1992  ( 2016-05-21 03:17:53 -0500 )edit

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Asked: 2016-05-16 13:22:44 -0500

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Last updated: May 23 '16