[Radiance-general] Annual simulation with electrochromic glass

[Germán Molina Larrain]

Julien,

A while ago I saw THESE SLIDES
<https://www.radiance-online.org/community/workshops/2014-london/presentations/day2/Mardaljevic-Electrochromic.pdf/view>by
John Mardaljevic... maybe they can help you.

On the other hand, the method I would choose for simulating electrochromic
glass would be using Daylight Coefficients. It may take longer (depending
on the number of windows and states you want to simulate), but it will
consider the true specularity of the glass (BSDFs used in the 3-phase
method will not allow that).

What I often do is to perform a DC simulation for every state of the office
(I usually work with simple offices with a small amount of windows), and
then use a script or spreadsheet to select what is the state at each hour.
The calculation of the state of the window at each hour will depend on the
control strategy...

I hope this helps

Germán

2016-07-06 7:03 GMT-03:00 Julien Boutillier <boutillier at estia.ch>:

> Hi,
>
> I would like to achieve annual simulation of an electrochromic glass (tint
> change) with Radiance to obtain room illumination.
>
> I am interested in the 3 phases method, but the glass xml file defines a
> constant behavior for each hour of the year.
>
> Is it possible to create a file containing the evolutionary behavior of
> glass every hour?
> Or is there another way to simulate this kind of glass (other than one
> simulation per hour)?
>
> Thanks in advance,
> Best regards,
>
> Julien
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