Daylighting and Sustainable Lighting
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7 comments:
Jamie Duncan Blog Entry # 1
“Daylighting is synonymous with ‘ natural’ or ‘true light,’ and is defined as the combination of sunlight and skylight.” (1)
Inside a space, daylighting can actually appear blue on very clear, cloudless day. This is typically at a level of 6000K. There are variations on this number, however, and they can be anywhere from 3500K to 4700K. In turn, the numbers are changing the hue that is cast in a n indoor space, answering the question “Do light levels at extreme highs and lows and at points in between impact the eye’s perception of color?” interestingly enough, the level of light cast is not the only culprit at blame for the color change. The manner in which our irises expand and contract also factors in to the way daylighting is perceived. (1)
Sustainable lighting and daylighting can be directly correlated, because daylighting is a very key component of sustainable lighting practices. This method takes advantage of the natural light the sun has to offer. This, however, will require a building’s design to be done in way that maximizes the light’s ability to illuminate the space.
Acquired from Architectural Lighting Online, some other approaches to sustainable lighting were listed as: Maximizing the use of energy, avoiding skyward illumination (AKA: light pollution or ‘sky glow’), ensuring system durability and maintainability, and encouraging environmentally responsible manufacturing processes. (2)
I have included a link to some brilliant sustainable lighting by Johanna Grawunder, a female architect who is making an impact in the sustainable lighting industry with her unique designs. (3)
1. http://www.solux.net/edu13.htm
2. http://www.archlighting.com/industry-news.asp?articleID=452970§ionID=0
3. http://www.artplusindustry.com/art_grawunder.html
I found benyalighting.com a wonderful sites based on their innovative design systems using sustainable and daylighting concepts. i.e. sweep sensor concept. Improving or enhancing lighting systems which are not only clever and functional but also have a beauty in how they are installed and implemplemented will keep the end user wanting to enhance and upgrade their old ways of thinking to new sustainable ways keeping the movement pushing forward. I also found a site sunbeltsolarenergy.com which explained in laymens terms exactly how photovoltaic modulars worked which I found very useful.julie
Daylighting can increase comfort and beauty while reducing energy cost. Some examples of daylighting include skylights and clerestory windows. The play of light against the ceiling or upper wall mimics look and feel of the sky. Even on overcast days, the effect of natural, overhead light works as effectively as electric lighting. Let's not forget about the natural heating involved in Daylighting. Also, in commercial buildings, there is a system that sences how much light is entering a space and will adjust the electric lights to either add more light or to dim themselves.
Kristin Featherman
http://www.mobilehomerepair.com/day-lighting.html
Hi Julie,
You really captured a way to get the best of both worlds, in the aesthetic and economical/green sense, with the Benya site you provided. Solar modulars are such a great concept, and what a fabulous idea to use those as a resource. Do you think you would ever consider using those on your own house?
Hi Kristin,
Great insight on the daylighting concept. That was a very interesting site you found your info from...I would have never thought to look there. Great job.
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The most sustainable lighting is daylight lighting. Careful designing is needed in order to increase natural lighting in a building. The placement of windows, light shafts, skylights, etc. is very important, if they are placed in the wrong spot it can increase glare, and tamper with the indoor temperature regulation. A few other forms of sustainable lighting are Energy efficient lightbulbs, LEDs, & CFLs.. they all use less energy than the standard lightbulb.
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