[BLDG-SIM] Some articles of interest on complex fenesrtration systems

[Laouadi, Aziz]

Dear all,
 
The following recently  published papers may be of interest to  some of
you involved in fenestration and computer simulation.  The first paper
presents the development of new metrics to rate complex fenestration
products with regards to aspects of indoor environment quality, namely:
view impairment index  (which is used to evaluate the outdoor or indoor
view-privacy), luminance index (which links to discomfort glare), light
diffusion quality index (which links to luminance uniformity on work
planes).  The second paper presents the underlying theory and detailed
calculation procedures.  The procedures include models for the glazing
assembly and models for special glazing panes such as a clear substrate
with applied or laminated scattering film, composite film made up of a
number of homogeneous materials, and screen-like glazing panes such as
insect/shading screens, roller blinds, drapery sheets, honeycomb
transparent insulation and fibreglass translucent glazing.  The models
are implemented in a new version of SkyVision (not released yet).
 
 
Complex fenestration systems  are defined as any window product which
incorporates a non-clear  (scattering)  pane in the glazing assembly or
in its attachment.  Examples include: switchable glazing, translucent or
transparent insulation, solar control films doped with nano-particles,
patterned/fritted glass, and shading devices.  CFS may yield better
thermal, lighting and energy performance than regular  clear  windows,
but may have adverse effect on building's occupant satisfaction:  they
may impair the view through and increase the risk of discomfort glare.
Adding these new ratings to the exiting  energy ratings (U-value, SHGC,
VT) will help in the pre-selection of CFS prior to their installation in
buildings to avoid any detrimental effect on occupant satisfaction and
energy performance of the installed product.
 
To get copies from the NRC web site:
Laouadi, A.; Parekh, A. "Complex fenestration systems: towards product
ratings for indoor environment quality," Lighting Research and
Technology, 39, (2), June, pp. 109-122, June 01, 2007 .  URL:
http://irc.nrc-cnrc.gc.ca/pubs/fulltext/nrcc45654/
<http://irc.nrc-cnrc.gc.ca/pubs/fulltext/nrcc45654/>  

Laouadi, A.; Parekh, A. "Optical models of complex fenestration
systems," Lighting Research and Technology, 39, (2), June, pp. 123-145,
June 01, 2007. URL:  http://irc.nrc-cnrc.gc.ca/pubs/fulltext/nrcc49508/
<http://irc.nrc-cnrc.gc.ca/pubs/fulltext/nrcc49508/>   

 
Thanks
 
 

Dr. Abdelaziz (Aziz) Laouadi 
Research Officer 
Indoor Environment Research Program 
Institute for Research in Construction 
National Research Council of Canada 
1200 Montreal Road, Building M-24 
Ottawa, Ontario, Canada, K1A 0R6 
Tel.:  (613) 990 6868;  Fax:  (613) 954 3733 
Email: Aziz.Laouadi at nrc-cnrc.gc.ca 
Web: http://irc.nrc-cnrc.gc.ca/ie/lighting/daylight/skyvision_e.html
<http://irc.nrc-cnrc.gc.ca/ie/lighting/daylight/skyvision_e.html> 



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