The LED revolution continues to promise many lighting benefits, such as compact size, energy efficiency, long service life with long mean time between failures, no mercury disposal, a resistance to shock and vibration, and no radiated heat or UV output.
It’s not often that an electrical contractor has the opportunity to sell a product line that saves a customer time, money and energy; promotes green sustainability; and reduces the load on the nation’s power grid. But that’s what industry observers say LED lighting sources can do.
Significant innovation in linear fluorescent lighting is being spurred on by commercial building energy codes, sustainability initiatives, new legislation and regulations, customer demands and competition from other light sources, such as light-emitting diodes (LEDs).
Public awareness of the federal phase-out of incandescent lamps is growing, according to the third annual Sylvania Socket Survey. Thirty-six percent of Americans reported that they are aware of the phase-out—up 10 percent from 2009.
Because surfaces and objects in typical spaces reflect light, they can play a part in lighting efficiency as extensions of the lighting system. By controlling room surface reflectances, light levels can be improved, creating opportunities to save energy.
Since the Frank Gehry-designed Guggenheim Museum Bilbao opened in the Spanish city in 1997, crowds of tourists have flocked there. Most say they come to see the museum, hailed as the most important structure of its time. And many stay to shop and eat, generating millions in revenue for the town.
Commercial building owners wishing to add low-voltage control wiring to their existing space for the installation of smart lighting controls used to be severely handicapped by architectural, technological and economical logistics.
The green design—good for the environment in that it makes buildings more sustainable—can be bad for lighting, as designers are incentivized to chase points that may require sacrifices to design. For lighting, it can be especially risky.
In part 1 of this two-part series on photosensors, I described the major characteristics of photosensors and ended with a problem: suppose we have a classroom in which we want to begin dimming the row of fluorescent lighting fixtures adjacent to a series of windows when daylight levels reach 150 pe
Daylight harvesting’s value proposition is fairly simple: as daylight levels increase in a space, electric lighting levels can be automatically reduced to maintain a target task lighting level and save energy.
Once a venerable workhorse in commercial lighting, the fluorescent magnetic T12 ballast is now considered a dinosaur. All but extinct in new construction, there are still millions of these ballasts installed in commercial buildings throughout the United States.
According to a report on www.researchandmarkets.com, the emerging global lighting technologies market is expected to be worth $109.2 billion by 2014 and is growing at an estimated compound annual growth rate (CAGR) of 8.1 percent from 2009 to 2014.
Standard 189.1, the Standard for the Design of High-Performance, Green Buildings Except Low-Rise Residential Buildings, published in late January by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), provides the first code-intended commercial green building stan