August 2007
Letter to Editor
AutomatedBuildings.com
Babel Buster Network Gateways: Big Features. Small Price.
Control Solutions, Inc. - Minnesota
(Click Message to Learn More)
Dear Ken,
This is in ref to the Daylight harvesting appearing in Automated Buildings
August issue released by Craig DiLouie, Principal, ZING Communications, Inc
http://www.automatedbuildings.com/news/aug07/articles/zing/070723051101dilouie.htm
J R Anjaria
I belief you would be correct if no action was done to prevent increased
transmission the below article provides some insight into how this can be
designed to achieve both daylighting and reduced transmission
http://www.automatedbuildings.com/news/may07/articles/concordia/070428064606conc.htm
I have copied Craig so he may provide his own
comments.
A computer simulation would be required of the actual building design to provide
accurate information to solve this complex equation
Thanks for your observation
Ken Sinclair Editor/Owner
www.automatedbuildings.com
sinclair@automatedbuildings.com
250-656-5378
Hello M. Anjaria,
Thanks for your letter. Your question is entirely appropriate but deals with a
discipline in which I claim little expertise, as it?s not specifically
controls-related. What I do know is there are two factors an architect should be
careful about when constructing a building with ample daylighting?glare and heat
gain. There are technologies available that address each. For example, for
glare, automated window shades that provide a view but reduce glare can be tied
to the control system; Lutron makes a product like this. For heat gain, there
are many strategies, including exterior shading devices both automated and
fixed, high-quality glazing that enables light penetration but reduces solar
penetration, and even trees and plants can be used to shade the building. The
orientation of the building may be another factor. A good rule of thumb is to
avoid direct sunlight penetration unless specifically desired in a space, and
direct daylight into the building using shielding media from interior to
exterior shading devices.
The Advanced Lighting Guidelines has some good information that may prove
helpful in this area (see section 6.3, 7.4 and others relevant to daylighting):
http://www.newbuildings.org/ALG.htm
I hope this helps you.
Best Regards,
Craig DiLouie
ZING Communications, Inc.
612 - 23rd Avenue SW
Calgary, AB T2S 0J7
403.802.1809
cdilouie@zinginc.com
www.zinginc.com
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