Search results
Results From The WOW.Com Content Network
While these curtain wall systems are more energy-efficient than older, single-glazed versions, they are still significantly less efficient than opaque (solid) wall construction. [13] For example, nearly all curtain wall systems, thermally-broken or otherwise, have a U-value of 0.2 or higher, which is equivalent to an R-value of 5 or lower. [14]
Blue devices can convert 13.3% of light absorbed into power, making it the most efficient across all colored devices developed and tested. Perovskite solar cell technology can be tuned to red, green and blue by changing the metallic nanowire thickness to 8, 20 and 45 nm respectively. [ 19 ]
However, skyscrapers can also have curtain walls that mimic conventional walls and have a small surface area of windows. The concept of a skyscraper is a product of the industrialized age , made possible by cheap fossil fuel derived energy and industrially refined raw materials such as steel and concrete .
A water wall uses containers of water for thermal mass instead of a solid mass wall. Water walls are typically slightly more efficient than solid mass walls because they absorb heat more efficiently due to the development of convective currents in the liquid water as it is heated.
EISA 2007 set new performance requirements for certain common light bulbs, requiring that these bulbs become approximately 25-30% more efficient than the light bulbs of 2008 by 2012–2014. Overall, the intent of this was to bring into the market more efficient light bulbs.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
American engineers studying the system in 1930 informed Le Corbusier that it would use much more energy than a conventional air system, but Harvey Bryan later concluded Le Corbusier's idea had merit if it included solar heating. [1] Another early experiment was the 1937 Alfred Loomis house by architect William Lescaze in Tuxedo Park, NY. This ...
The exterior curtain walls are defined by projecting steel I-beam mullions covered with flat black graphite paint, characteristic of Mies's designs. The balance of the curtain walls are of bronze-tinted glass panes, framed in shiny aluminum, and separated by steel spandrels, also covered with flat black graphite paint.