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
Amalgam technology, fairly common among plug-in compact fluorescent lamps (CFLs), is now available in linear T5HO, T5VHO and T8VHO fluorescent lamps, making fluorescent lighting competitive in many high-intensity discharge (HID) applications.
Satisfying peak demand can be very expensive for utilities, which pass this cost onto their customers in the form of time-variable pricing or demand charges. Utilities, therefore, share a common interest with their customers to reduce peak demand.
The presence of light is rarely noted unless there is a perceived lack of it (dim atmosphere or shadows) or a perceived excess (glare). Like air, light is invisible and yet is everywhere in the visual environment, as we cannot see without it.
“CFLs in America: Lessons Learned on the Way to Market,” published by the Department of Energy (DOE), concludes that technical and quality problems with early compact fluorescents snowballed into major obstacles to acceptance by consumers and retailers.
Some of the most dramatic lighting performance gains can be achieved by adopting solid-state lighting in the home, where incandescent lighting has met its match with products that combine the efficiency of compact fluorescent and the quality of halogen.