[Equest-users] Parametric runs

Wesley S. Care wesley.care at esdaz.com
Thu Mar 15 14:03:40 PDT 2012

Hi Stefano,

Before you start trying to recode eQUEST, you might see if the scheduling options in the Window Properties window will be close enough approximations for you. The Blinds/Drapes - Switching tab has several options that allow you to vary conductance, solar transmission, etc. during the course of a simulation. It's meant to represent variable shading, so you can decide if that's scientific enough for what you're doing.

The only other "easy" way I can think of is to run the model with both (or all) of the skylight options, and stitch the results together (March through August with one, the remainder with the other for example). The effect would be the same as if a guy went up and swapped out the glass one day. You'd have to lock down equipment sizing and a few other things to make sure that's the only difference, but still easier than adding your own eQUEST feature.

Maybe you're better with code than me though! Good luck however you decide to do it.


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From: CleanTech Analytics [mailto:jeremiah at cleantechanalytics.com]
Sent: Wednesday, March 14, 2012 3:10 PM
To: smoret at ucdavis.edu; yjhuang at whiteboxtechnologies.com
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Parametric runs

You may wish to ask Joe Huang, as if there is anyone who could do this he would be the one, as he is one of the most knowledgeable in the world so far as the DOE2 computer code.

Best of luck

White Box Technologies, Inc.

346 Rheem Blvd., Suite 108D

Moraga CA 94556

yjhuang at whiteboxtechnologies.com<mailto:yjhuang at whiteboxtechnologies.com>


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On Wed, Mar 14, 2012 at 3:04 PM, Stefano Moret <smoret at ucdavis.edu<mailto:smoret at ucdavis.edu>> wrote:
Thanks Jeremiah,

I actually don't want to change much to the model itself, I just want to give different properties to materials (or change components) in different times of the year. Let's say, I want to use a type of skylight in winter that's different from the one I use in summer, by changing the model of the skylight or some of its main parameters. Do you think this might be possible? Maybe adding some external script?

Thanks, Stefano

From: CleanTech Analytics [mailto:jeremiah at cleantechanalytics.com<mailto:jeremiah at cleantechanalytics.com>]
Sent: Wednesday, March 14, 2012 2:51 PM
To: Stefano Moret
Cc: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] Parametric runs

I do not believe so, but you can try lots of different configurations that you either draw, or trace from cad..
On Wed, Mar 14, 2012 at 2:38 PM, Stefano Moret <smoret at ucdavis.edu<mailto:smoret at ucdavis.edu>> wrote:

I'm new to the use of E-quest, I'm just starting to play around with it by performing some preliminary simulations.
The reason why I started using it is because of its feature of managing skylight properties: for a research project I'd like to simulate an "ideal skylight" solution, which could basically adapt its main properties (VLT and SHGC) in order to minimize building energy consumption. I've seen there's a very interesting "parametric run" tool, which can make me able to perform simulations with different values of these parameters.
My question is: does E-quest support the possibility of writing a function which changes this values over the run itself with a rule set by the user? Or, at least, can I set different values at different times of the day?

Thanks for your attention,
Best Regards


Stefano Moret
California Lighting Technology Center<http://cltc.ucdavis.edu/>
University of California, Davis
633 Pena Drive
Davis, CA 95618
smoret at ucdavis.edu<mailto:smoret at ad3.ucdavis.edu>

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