[Bldg-sim] WINDOWS 6.2

[D. Charlie Curcija]

Clarification: It is not enough to set standard in OPTICS.  Think of OPTICS
as virtual glass laboratory.  It is used to define individual glass layers
and standard file in OPTICS is used to get broad band (integrated)
solar-optical properties.  However, that is for informational purposes only,
as the main purpose of OPTICS is to provide spectral data for individual
glass layers.  In order to correctly calculate glazing system solar-optical
properties (Transmittance, reflectance, absorptance, SHGC, VT) in WINDOW 5
or 6, you need to set correct spectrum standard in WINDOW as well
(Preferences/Optical Data/Standards File), otherwise the results will be
incorrect regardless of what was used in OPTICS.

 

Also, OPTICS is necessary only if you are creating glass layer that does not
exist in WINDOW glass library (such as laminates, applied films, measured
performance of new glasses, etc.).  Otherwise, it is an unnecessary extra
step.

 

Charlie

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D. Charlie Curcija 
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From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of
rgaray at labein.es
Sent: Thursday, February 18, 2010 3:51 AM
To: bldg-sim at lists.onebuilding.org; emanuele.naboni at gmail.com
Subject: Re: [Bldg-sim] WINDOWS 6.2

 


Dear Emanuele 

I have been workin for some time with the fenestration programs from the
LBNL and due to their hierarchy, a new layer should be defined in OPTICS,
then comfined with other layers to create a glazing system also in OPTICS
and finally imported to WINDOW, wehere frames are added.. 

Standars can be set in OPTICS, where i have just checked that EN410 is
available. 

If you wanted to create a metal grid, y would employ a new glass layer with
solar transmitance equal to the hole fraction of the metallic element. 

I´m sorry but I have no idea on how you can solve your 3rd question. 

Kind regards, 

Roberto Garay 


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Roberto Garay Martinez
Labein-Tecnalia
Unidad de Construcción y Desarrollo del Territorio
c/Geldo. Parque Tecnológico de Bizkaia
Edificio 700
48160 Derio (Bizkaia)
Tel.: 34 94 607 33 00
Fax: 34 94 607 33 49
www.labein.es
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----- Mensaje de Emanuele Naboni <emanuele.naboni at gmail.com> en Tue, 16 Feb
2010 23:45:05 +0100 ----- 


Para:

bldg-sim at lists.onebuilding.org 


Asunto:

[Bldg-sim] WINDOWS 6.2


Dear All, 

I am trying to calculate with WINDOWS 6.2 the  thermal and optical
properties of a facade system. The system is composed by a double pane glass
and an exterior shading system. The shading is parallel to the facade plane,
it is 750 mm (2'6") detached form the glass and it is made by a metal grid
with openness factor that could range from 30% to 60%. The goal is to see
how the component properties are varying depending on different grid's
opening factors. 

By doing that I have encountered these issues, any type of help would be
greatly appreciated: 

1) Here in Italy the standard for glass calculation is the EN410 is there
any way to use it with WINDOWS 6.2? I have tried to copy the zip file from
the Windows knowledge base into the suggested folder but I am not seeing how
it is then possible to select the standard for the calculations. 

2) Is there any settings available to automatically use Environmental
conditions as defined in EN410? 

3) For some reasons, depending on the Environmental Condition that I am
selecting, there are some results in the calculation that are N/A. Is there
any reason for this? 

4) To model the metal grid I am using the Woven Shade, is that the right
option? (This is actually the case I am modeling) 

Thank you! 

Regards, 

Emanuele 

-- 
Emanuele Naboni - www.e3lab.org <http://www.e3lab.org/>  - info at e3lab.org
MArch, PhD Building Science, LEED AP, EU licensed architect 
sustainable design consultant - consulente per la sostenibilita' di
tecnologie, edifici e citta'

per l'Italia: 346.4133337
from US: +39.346.4133337
skype: emanuelenaboni

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