[Bldg-sim] interstitial blinds shading

[Chris Yates]

Thanks Michael

I've steered away from using later versions of window. In fact, I haven't
even used window 5 for over a year. However, this seems to warrant some
serious attention. I'll keep you posted.
Chris

Sent from my Android device. Please excuse typos, etc.
On 5 Aug 2014 19:05, "Michael Hsueh" <mhsueh at integralgroup.com> wrote:

> Actually, I think you're correct that the BSDF can be applied to thermal
> simulations. A cursory Google search reveals some research into using BSDF
> in the way you're talking about, but the widespread use is largely for
> visual rendering/daylighting realm. One abstract I found indicates that
> Window 7 produces BSDF functions, which demonstrates the utility of that
> software for your purposes. I think next steps would be to figure out if
> you can get Window 7 to simulate interstitial shades. If yes, then you'd
> end up with a generally applicable SHGC that would probably be pretty good
> for whatever modeling software you'd be using for larger (building) scale
> questions. The good thing is that Window 7 also outputs surface
> temperatures, which I think speaks to your interest in understanding
> operative temperature near the windows.
>
>
>
> *Michael Hsueh* | Project Engineer
>
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> On Tue, Aug 5, 2014 at 10:51 AM, Chris Yates <
> chris.malcolm.yates at gmail.com> wrote:
>
>> It is primarily on heat gain and operative temp near to the glazing. I
>> wasn't aware that BSDF was limited to daylight - need to read the e+
>> documents with my glasses on next time!
>>
>> Cheers/ Chris
>>
>> Sent from my Android device. Please excuse typos, etc.
>> On 5 Aug 2014 17:48, "Michael Hsueh" <mhsueh at integralgroup.com> wrote:
>>
>>> Chris,
>>>
>>> That's an interesting question -- I haven't done any modeling of
>>> interstitial blinds myself, but I think that Window might be able to do
>>> this? I know that it has functionality for modeling "advanced shading",
>>> though I haven't personally explored it much. Someone else who is
>>> well-versed in that program can weigh in on this.
>>>
>>> Would be good to get some clarification on your question though -- you
>>> mentioned the BSDF, which so far as I know is mainly used in a daylight
>>> modeling context. Are you mainly interested in the daylight quality aspects
>>> of interstitial blinds, or are you thinking mostly about SHGC and
>>> subsequent cooling energy in the space? If the latter, I think a simple
>>> calc/model would likely get you close enough without needing to delve into
>>> too much detail.
>>>
>>>
>>>
>>>
>>>
>>> *Michael Hsueh* | Project Engineer
>>>
>>> *Integral Group *| 427 13th Street | Oakland CA USA 94612
>>> T 510.663.2070 x 241
>>>
>>> integralgroup.com <http://www.integralgroup.com/> | mhsueh
>>> @integralgroup.com
>>>
>>> *Trust* | *Nurture* | *Inspire*
>>>
>>>  *See our new book: Integral: Revolutionary Engineering
>>> <https://living-future.org/int%C3%A9gral-revolutionary-engineering>*
>>>
>>> *
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>>> On Tue, Aug 5, 2014 at 9:21 AM, Chris Yates <
>>> chris.malcolm.yates at gmail.com> wrote:
>>>
>>>> Dear All,
>>>>
>>>> I'm aware that there is some cutting edge stuff being done on this. I
>>>> am interested in this, but also in commercial modeller's experiences - i.e.
>>>> mainstream practice.
>>>>
>>>> I'd just like to throw a few questions out there:
>>>>
>>>>    1. Does anybody model these regularly?
>>>>    2. What are the merits of simple vs more computationally expensive
>>>>    modelling methods (e.g. Bidirectional Scattering Distribution Function)?
>>>>    3. Are there any well recognized (i.e. mature/ main stream)
>>>>    standards covering blind/ shade glazing combinations?
>>>>    4. What are the relative merits (if any) of expressing Blind /
>>>>    glazing combinations as a simple SHGC? Or is this outside the remit of the
>>>>    standard completely?
>>>>    5. What are your experiences of glazing suppliers providing
>>>>    accurate data?
>>>>
>>>> Kind regards
>>>>
>>>> Chris Yates
>>>>
>>>>
>>>>
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