Sent: Tuesday, July 17, 2012 10:55 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: RE: [EnergyPlus_Support] About the output:variable
Sent: Tuesday, July 17, 2012 10:47 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] About the output:variable
I have time variables in my watch window. When these change, the simulation has moved on to the next time step. This means the last value I saw (not this one) should match the csv data.
These are my watch variables:
DataEnvironment::Month
DataEnvironment::DayofMonth
DataGlobals::CurrentTime
DataHVACGlobals::TimeStepSys (this will match TimeStepZone unless the simulation reduces the time step)
DataHVACGlobals::SysTimeElapsed (this variable counts the "reduced" time step increments)
DataGlobals::TimeStepZone (this is set in your input file - e.g., Timestep,6;)
When any of these change, the simulation moved to the next time step (i.e., the variable value before should match csv).
Hello,
Thank you very much for your reply. I knew that these models need to iterate many times to get the answer. However, I don't know which update is the last update to the variables. Can you tell me how to determine which update is the last update to the variables for one step? Thank you very much!
Regards,
Ying Yan
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [EnergyPlus_Support@xxxxxxxxxxxxxxx] on behalf of Richard Raustad [RRaustad@xxxxxxxxxxxx]
Sent: Tuesday, July 17, 2012 10:03 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] About the output:variable
Each time step is simulated multiple times, on the last iteration the
data in the csv should match E+ variables.
The DX coil, as well as other system types, also iterates many times.
You need to watch for the the last update to the variables in order to
match to the csv file.
I have done this many times and I find that the answers match.
On 7/17/2012 9:47 AM, yingyan2012 wrote:
> Dear Sir or Madam,
>
> I ran the source code and then use "ReadVarsESO.exe" to get the output file. Obviously, this file containing output variables are as same as the file obtained from E+. However, I ran the source code step by step to output some variables of cooling coil such as outlet temperature, outlet humidity ratio and so on and compared these results with results contained in the output file (I chose "detailed" as reporting frequency). I found that quantities of variables obtained from running of source code step by step are different from quantities of variables contained in output file. I am very confused. Can you explain this situation for me, thank you very much.
>
> Regards,
>
> Ying Yan
> ECE
> UConn
>
>
>
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--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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Fax: (321) 638-1439 or 1010
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-- Richard A. Raustad Senior Research Engineer Florida Solar Energy Center University of Central Florida 1679 Clearlake Road Cocoa, FL 32922-5703 Phone: (321) 638-1454 Fax: (321) 638-1439 or 1010 Visit our web site at: http://www.fsec.ucf.edu UCF - From Promise to Prominence: Celebrating 40 Years
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