Re: [EnergyPlus_Support] parametric simulations for different materials

On Wed, Nov 24, 2010 at 6:27 PM, Shady Attia <chadiattia@xxxxxxxxxxx> wrote:

Thank you James,

I agree with you. In fact i just took a bad example, but I meant : how can I run parametric simulations for different constructions. I want to know if EP can grab the constructions as a whole or can EP only simulate particular values (U or thicknesses) ?

Shady

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Wed, 24 Nov 2010 12:23:27 -0500
Subject: RE: [EnergyPlus_Support] parametric simulations for different materials

Dear Shady,

Insulation that is contained within a wall generally has low mass, at least low enough not to significantly affect the mass-influenced time lag through the wall system. For that reason, I doubt that you will see a difference between modeling specific materials and just specifying different conductance values.

I think you could easily run any conductance value using the parametric processor, just as you already did for thickness.

The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Shady Attia
Sent: Wednesday, November 24, 2010 11:41 AM
To: energyplus_support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] parametric simulations for different materials

Thank you all,

I followed your advise and finally succeed to run parametric runs with various values.

What I did was for a variety if insulation thicknesses (2,5,7,10,12 cm).

Now, I want to try something else.

How can I run a parametric simulations of different insulation types/materials (rubber, polystrene, rockwool)

please advise,

Shady

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: linda@xxxxxxxxxxxxxx
Date: Tue, 23 Nov 2010 17:23:45 -0700
Subject: Re: [EnergyPlus_Support] Run a series of simulations

A recent addition to EnergyPlus utiltiies -- the Parameteric preprocessor
is one way to accomplish this.
ParametricInsulation-5ZoneAirCooled.idf is in the included ExampleFiles.

Objects to look for are:
Parametric:SetValueForRun
Parametric:RunControl
Parametric:Logic

the Parametric Preprocessor is documented in the Auxiliary Programs
document.

There are at least two other example files that use these.
Which EnergyPlus Example File has...

Two links from the installation:

Example Files Summary Sheet - highlights each example file

Example Files Link to Objects - shows the first three example files (if
that many exist) that have a particular object.

You can also accomplish parametric runs with the EPMacro preprocessor.
EP-Launch can be used in this method to run a user set number of runs.

On Tue, 23 Nov 2010 23:47:47 +0000, Shady Attia <chadiattia@xxxxxxxxxxx>
wrote:
> Hi All,
> I am developing a simple interface for EP and I would like to include
some
> sensitivity analysis options in my interface. I want to allow the user
just
> by clicking a button, to effectuate a series of simulations for the same
> idf file but including all steps of a predefined ranged. For example, if
> the user click on the sensitivity analysis button that is associated
with
> insulation thickness the RunBatch will run 5 simulations using the same
IDF
> input file but changing the insulation thickness 5 times (2,5,7,10,12
cm).
> How can I do that?
> I succeed to modify single parameters in the idf file using my interface
> and then running the simulation through a RUNEP.BAT. But how can I run a
> series of parallel simulations (steps) representing the range of one
> selected parameters? how would the outcome look like? Will EP generate
> every simulation a new output file for every step?
> Please advice.
> Thanks in advance,
> Shady Attia, LEED®AP
> PhD Candidate
> ARCHITECTURE
> ET CLIMAT
> Place du Levant,1
> B-1348 Louvain-la-Neuve
> BELGIUM
> Tél:
> +32(0)10.47.23.34
> Fax: +32(0)10.47.21.50
>
>