Featured Research

from universities, journals, and other organizations

New skylight scoops up daylight, save energy

Date:
August 20, 2013
Source:
Rensselaer Polytechnic Institute (RPI)
Summary:
Light scoops provide optimal levels of daylight throughout the changing seasons and daily fluctuations in weather by capturing and strategically redirecting daylight into buildings.

The LRC’s new light scoops design balances out daily and seasonal fluctuations in light level and temperature by providing less light in summer and more light in winter, while accounting for the natural pattern of the sun as it travels across the sky.
Credit: Image courtesy of Rensselaer Polytechnic Institute

The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute recently released a guide for designing light scoops -- an innovative type of skylight designed by the LRC with funding from the New York State Energy Research and Development Authority (NYSERDA). Light scoops provide optimal levels of daylight throughout the changing seasons and daily fluctuations in weather by capturing and strategically redirecting daylight into buildings.

Many conventional horizontal skylights provide too much sun on days that are warm and sunny, and too little sun on days that are cold and dark. The LRC's new light scoops design balances out these daily and seasonal fluctuations in light level and temperature by providing less light in summer and more light in winter, while accounting for the natural pattern of the sun as it travels across the sky. In overcast conditions, a light scoop receives light from the brightest part of the sky, known as the zenith. They work very well in locations that are frequently cloudy and overcast such as Seattle, Portland, Detroit, and Buffalo.

Using light scoops and controls, electric lights can be turned off or dimmed when adequate daylight is available, thus saving energy and operating costs. Light scoops can also save heating and cooling energy.

Not only does this new design save energy and operating costs, but it provides occupants with a more pleasant environment. Light scoops provide "patches of sun" where occupants can enjoy the health benefits of sunlight. In 2012, 14 light scoops were installed on an expansion of the Welch Allyn corporate headquarters in Skaneateles, N.Y. Several months after the light scoops were installed, 48 occupants completed a survey with a very high rate of satisfaction -- almost 90 percent "like" or "strongly like" the patches of sun in the atrium, with responses such as, "sometimes I like to take a mental break, sitting in the sun," "I just love to have sun, especially with the way it used to be [before renovation]," and "it's very relaxing." More details of the Welch Allyn installation and case study can be found in the Light Scoops design guide.

Light Scoops: A Design Guide demonstrates how to design light scoops to meet target light levels and includes a performance comparison of light scoops vs. conventional skylights.


Story Source:

The above story is based on materials provided by Rensselaer Polytechnic Institute (RPI). Note: Materials may be edited for content and length.


Cite This Page:

Rensselaer Polytechnic Institute (RPI). "New skylight scoops up daylight, save energy." ScienceDaily. ScienceDaily, 20 August 2013. <www.sciencedaily.com/releases/2013/08/130820185347.htm>.
Rensselaer Polytechnic Institute (RPI). (2013, August 20). New skylight scoops up daylight, save energy. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2013/08/130820185347.htm
Rensselaer Polytechnic Institute (RPI). "New skylight scoops up daylight, save energy." ScienceDaily. www.sciencedaily.com/releases/2013/08/130820185347.htm (accessed October 21, 2014).

Share This



More Matter & Energy News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Graphene Paint Offers Rust-Free Future

Graphene Paint Offers Rust-Free Future

Reuters - Innovations Video Online (Oct. 21, 2014) British scientists have developed a prototype graphene paint that can make coatings which are resistant to liquids, gases, and chemicals. The team says the paint could have a variety of uses, from stopping ships rusting to keeping food fresher for longer. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Gulfstream G500, G600 Unveiling

Gulfstream G500, G600 Unveiling

Flying (Oct. 20, 2014) Watch Gulfstream's public launch of the G500 and G600 at their headquarters in Savannah, Ga., along with a surprise unveiling of the G500, which taxied up under its own power. Video provided by Flying
Powered by NewsLook.com
Japanese Scientists Unveil Floating 3D Projection

Japanese Scientists Unveil Floating 3D Projection

Reuters - Innovations Video Online (Oct. 20, 2014) Scientists in Tokyo have demonstrated what they say is the world's first 3D projection that floats in mid air. A laser that fires a pulse up to a thousand times a second superheats molecules in the air, creating a spark which can be guided to certain points in the air to shape what the human eye perceives as an image. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins