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Re: [EnergyPlus_Support] Problems with extracting hourly variables from EnergyPlus


Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
yjhuang@xxxxxxxxxxxxxxxxxxxxxxxx
http://weather.whiteboxtechnologies.com for simulation-ready weather data
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(c) (510)928-2683
"building energy simulations at your fingertips"

On 27/09/2013 2:24 PM, Linda Lawrie wrote:
 

At 03:09 PM 9/27/2013, Joe Huang wrote:

  Output:Variable,*,Zone/Sys Air Temp,Hourly;                  < this does not work

This variable name was changed in V8.0, should have been picked up by transition to:

Zone Air Temperature

I believe the problem is that somewhere along the way you used:

Zone/Sys Air Temp which was changed in V 1.2.3 to Zone/Sys Air Temperature


I just checked the file. The only place Zone/Sys Air Temp appears is in the Output:Variable line.



 Also, what is the syntax for specifying the heat flux for a particular surface ?  I tried this but it doesn't work:

  Output:Variable,
    *,                       !- Key_Value
    HOUSE:AT-FLOOR2 Heat Flow,  !- Variable_Name
    Hourly;                  !- Reporting_Frequency

It looks like your Key Value should be HOUSE:AT-FLOOR2

not sure what variable name  you want.

"Heat flow" was just a shot in the dark, because I couldn't find a list of accessible hourly variables in the documentation.
What I would like are the surface temperatures and, most importantly, the heat flows or fluxes (Q) from the attic floor/ceiling into the space below.  Are you saying the syntax should be:

Output:Variable,
HOUSE:AT-FLOOR2,             !- Key_Value
[Variable name],                   !- Variable_Name
Hourly;                                  !- Reporting_Frequency

?

Joe

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