Re: [EnergyPlus_Support] Extract data from enrgyPlus

Dear Saad,

Here are examples:

Output:Variable, NodeIn_OA_RTU-Ofc, System Node Temperature, Timestep;

Output:Variable, Node_Offices, System Node Temperature, Timestep;

Output:Variable, HtgCoil1_RTU-Ofc, Heating Coil Gas Rate, Timestep;

The portion highlighted in redÂ is a node name for which you want to know the "System Node Temperature".Â The Â portion highlighted in orange is a component name (gas heating coil in this case).
As mentioned, look in example files for other ways to use these "Output:Variable"s.
Also, it is very helpful to use this command object:

Output:VariableDictionary, IDF
When you add this, a ".rdd" file is created.Â This file includes a complete list of applicable variables for your .idf.Â The .rdd file can be searched for variables that are of interest to you.
Finally, consider using a ".rvi" file to organize all of your output variables into a consistent order.

On Thu, Nov 13, 2014 at 9:25 PM, Saad Abobakr sably2003@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

Ok

As an example, let suppose we have one room with HVAC system (thermostat), so the output her will be the (room temperature) and the input is( heater's power+ outside temperature ), so where can I find these data that are related to input and output.
hopefully my example is clear.

Regards,

On Thursday, November 13, 2014 12:56 PM, "Jeremiah Crossett jcrossett@xxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

If you are doing this with a programmatic method you could do a query of the SQLite file as it contains all of the inputs and outputs..Â

â??â??
Jeremiah D. CrossettÂ Â | SeniorÂ AnalystÂ Â |Â LEED Green AssociateÂ
â??â??
7411 SW Capitol Highway | Portland, OR 97219Â
â??â??
Â | MobileÂ 503-688-8951
www.phasechange.comÂ
Â Â

On Thu, Nov 13, 2014 at 9:24 AM, Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

I Â cannot tell what "data" you are trying to extract.Â Please give specific examples.

On Thu, Nov 13, 2014 at 12:21 PM, Saad Abobakr sably2003@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

Hi,

Thank you fro your help.

Actually, I am still confucsed. I read Outputdetailexamples.pdf file that contains all output files, but I couldn`t know how I canÂ get the output data.

I need input and output data from EnergyPlus model to use it in system Identification toolbox to find the model, so I need data as (numbes).

Could anybody explain how can I get the data with more details.

Regards,

Saad Abobakr
Â

On Wednesday, November 12, 2014 12:32 PM, "Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

You can define individual data points such as temperatures and flows using the Output:Variable objects
For energy use, the Output:Meter objects are used.
There are also some custom Meter objects that enable defining combinations of energy-using equipment into a group, but the Output:Meter objects already has some standard categories, such as lighting, Fans, etc.

On Wed, Nov 12, 2014 at 12:02 PM, Saad Abobakr sably2003@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

Hi
Could you please tell me how csn I extract data from energyPlus.
Regards
Â

--

Â
James V Dirkes II, PE, BEMP, LEED AP
The Building Performance Team
1631 Acacia Drive, Grand Rapids, MI 49504
(M) 616 450 8653
The more one does what is good, the freer one becomes. There is no true freedom except in the service of what is good and just.

--

Â
James V Dirkes II, PE, BEMP, LEED AP
The Building Performance Team
1631 Acacia Drive, Grand Rapids, MI 49504
(M) 616 450 8653
The more one does what is good, the freer one becomes. There is no true freedom except in the service of what is good and just.

James V Dirkes II, PE, BEMP, LEED AP
The Building Performance Team
1631 Acacia Drive, Grand Rapids, MI 49504
(M) 616 450 8653

The more one does what is good, the freer one becomes. There is no true freedom except in the service of what is good and just.