[BLDG-SIM] Modeling custom windows with louvered sun shades

[Michael Tillou]

Kapil,
 
There is also another method you can use to model louvered window shades
using DOE2.2.  Rather than specifying windows using the COMPOSITE keyword
you can use the LAYER-BY-LAYER keyword.  LAYER-BY-LAYER allows you to create
a custom window that includes a louvered shade on either the exterior,
interior or in-between glass layers.  This has to be done in the detailed
edit mode and has to be done individually for each window.  I suggest
creating a master window and then use the DEFINE LINK... feature to link all
of the other windows that you want to have the window shade on.  This will
make calibration and any future changes a lot easier.   
 
I suggest that you read about creating layer-by-layer windows in the user
manual first. If you are going to use LAYER-BY-LAYER eQuest is much happier
if you create all your window layers first before you change the
specification type of any window.   The DOE2.2 library has a number of
pre-defined glass, gas, blind and shades to use.  The default library
entires are limited so you will probably need to customize them to the
details of your specific project.  The big problem I found is the limited
number of glass types, as far as I know you cannot use a Window 5 glass file
to describe a glass window layer.  You can define your own glass window
layers and if you do I suggest you carefully calibrate the model just using
the glass (with out the blind layer) to make sure you are satisfied with
your results (ie: compare the results to a similar window modeled using the
COMPOSITE specification method).  
 
If you decide to use the building shades that Andrew describes be aware that
they have an outward normal that must be facing away from the surface you
want shaded.  Again read up in the user manual before using these because
you can get really strange results if they are not applied properly.  The
problem I have found with using the building shades is that they are a
screen so if you want to simulate a louvered shade you have to create an
individual shade for each and every louver over your window or wall.  This
is the tedious part that Andrew mentions.  
 
Good luck,
 
Mike
 
Michael Tillou, PE, LEED
Tillou Engineering, LLC
Williamstown, MA 01267
P: 413-458-9870 C: 413-652-1087
  _____  

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Andrew Craig
Sent: Wednesday, June 27, 2007 11:29 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Energy Modeling Software Recommendations for Architects



Kapil---

 

Although tedious, you can create custom building shades in eQuest in the
'Detailed Edit' mode.  With these shades, you have full control over tilt,
azimuth, length, width, location, etc.  The folder for Building Shades is
right above the shape Polygons in the Component Tree of the Building Shell
tab.  Once you create one 'set' of shades over a window, you might be able
to do a simple copy and paste in the input file and change the location
coordinates.  Good luck.

 

Regards,

 

Andrew Craig, EIT, LEEDR AP | Mechanical Designer

INTERFACE ENGINEERING 
708 SW Third Avenue | Suite 400 | Portland, OR 97204 

direct: 503.382.2696
office: 503.382.2266
fax: 503.382.2262
email: Andrew_C at ieice.com
web: www.ieice.com 

Consultants of Choice to the Built Environment for over 35 years
Kirkland, WA | Portland, OR | Sacramento, CA | Salem, OR | SanFrancisco, CA

  _____  

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Kapil
Upadhyay
Sent: Wednesday, June 27, 2007 8:11 AM
To: BLDG-SIM at gard.com
Cc: Harvey.Bryan at asu.edu
Subject: [BLDG-SIM] Energy Modeling Software Recommendations for Architects

 

Dear John and Bryan,
I am a frequent user of Equest and because you support it I would like to
pose a question for you.

We have been trying to evaluate the effect of shading devices on a couple of
buildings and here is the difficulty with Equest:
It only allows overhangs and 2 vertical fins at the window's ends.
It does not allow you to place a number of vertical fins,which are maybe at
an angle. So we have resorted to other means to test the effect of shading
devices.

Would you have a way in Equest to get round this problem?
Thanks,
Kapil.


Harvey Bryan <Harvey.Bryan at asu.edu> wrote:

John, 

I also agree, Mr. Des Rosiers should take Marlin Addison's Building Sim
class (which has mostly an eQuest focus) at ASU. It is not that far from his
office downtown Phoenix office.

Harvey Bryan

________________________________

From: BLDG-SIM at gard.com on behalf of Aulbach, John
Sent: Fri 6/22/2007 10:37 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Energy Modeling Software Recommendations for Architects


I, Sir, beg to differ with eQuest needing "infinite data." The list of
requirements you just stated shows me you need a great deal of input as it
is.

eQuest can read an Auto Cad .DWG layout into the tracing function (in the
Design Development Wizard). One can then trace each floor and its zones as
accurately as you can.

After having done "raw" DOE-2.1 A thru E since 1984, eQuest is a blessing,
although not perfect (we need solar water heating added).

But I am currently doing a LEED bound new museum, with 4 floors that are not
anywhere close to the same footprint, and with varying atrium highs. I
expect the entire model to be done, zones, HVAC, utility rates, etc, with 60
man hours. And I didn't trace Auto Cad files either, rather free hand traced
them.

I find it very helpful.

________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Robert Des
Rosiers
Sent: Friday, June 22, 2007 10:05 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Energy Modeling Software Recommendations for Architects



All:

Of course there are many software options for building performance modeling.
As an architecture studio we are concerned more w/ developing form,
assemblies, daylighting models, water use, etc... to develop good building
practice and are less interested in getting overwhelmed by all the data
required by software like eQuest. I noticed that the DOE is developing an
EnergyPlus plug-in for SketchUp which sounds promising.



What software is recommended for developing a simple but useful in-house
design tool for schematic building performance modeling? Something that
allows us to modify and evaluate the effects of building orientation, form,
fenestrations as well as insulation values, mechanical systems, lighting,
etc... Preferably something that simulates performance from a 3D model (like
SKP) not infinite fields of data inputs (like eQuest).



Any help is greatly appreciated. Thanks!



Robert Des Rosiers, LEED AP



STUDIO MA Architecture & Environmental Design

www.studioma.com

desrosiers at studioma.com

602 251 3800 fax 251 3100



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