[Equest-users] Window operation

[Pasha Korber-Gonzalez]

Yes, in addition to that you need to model/specify your building windows as
"operable".  If they are specified as a "fixed" window then the simulation
will not "open" them to the outside air conditions and subsequent wind speed
from the weather file.

Always when trying to simulate some amount of NV you must have specified
operable windows & window area separate from your fixed windows and window
area AND you will have a temp schedule so that the program knows how you
want it to react.  Also remember that these attempts to represent energy
savings from operable windows or NV strategies are only static calculations,
therefore there are no iterations to take advantage of the dynamic
principals of NV in DOE-2.   AND   this is not a good way to analyze thermal
comfort of the occupants with NV design strategies.  The only purpose for
applying this approach in DOE-2 is to minimally represent potential energy
savings (mostly fan energy) in your whole building analysis.

Better tools (and typically more expensive tools) are available to properly
analyze the dynamic characteristics of Natural Ventilation strategies &
occupant thermal comfort, especially if you are trying to do this in
support/compliance for the LEED credit.  One tool is TAS (thermal analysis
software), and maybe TRNSYS (I'm not exactly sure of it's capability), and
of course CFD.

pkg

On Wed, Jul 21, 2010 at 7:53 AM, Peter Hillermann <
peterh at westallarchitects.com> wrote:

>  Sinan Senel,
>
>
>
> Under HVAC systems there is an outside air tab with a natural ventilation
> tab. Use it with a schedule attached to temperature and you should be fine.
> There is even a textbox that says window probability open.
>
>
>
> Thanks,
>
>
>
> *PETER HILLERMANN*
>
>
>
> peterh at westallarchitects.com
>
>
>
> *westall*
>
> *architects*
>
> 3404 pierce drive
>
> chamblee, georgia 30341
>
>
>
> o 770.458.4113
>
> f  770.458.5352
>
> c 678.898.2936
>
>
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> westallarchitects.com
>
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>
>
>
>
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *sinan senel
> *Sent:* Wednesday, July 21, 2010 8:00 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Window operation
>
>
>
> Dear all,
> Does any of you know if we can model the exterior windows to be opened
> based on the zone temperatures?
> For example I want to operate the exterior windows and open them if zone
> temperature exceeds
> 23 degrees and outdoor temperature is higher than 15 degrees.
> Is it possible?
>
> Thank you in advance.
>
> Best Regards
> Sinan Senel
>
>
>
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