Codes & Standards: Lighting
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Compact-fluorescent lamps: Triple-tube compact-fluorescent lamps (CFLs) are ideal for downlighting applications, especially when the appearance of an incandescent downlight is desired. When used in a vertical base-up design, the luminaire provides better cutoff and produces less glare than the traditional horizontal-mounted twin-tube CFL luminaire.
With energy conversation becoming a greater priority for building owners, the lighting-controls market is expected to continue growing through 2006, according to market research firm Frost & Sullivan, San Jose, Calif.
By assisting an end-user in addressing certain key issues, the chances of staying connected during power interruptions will increase, according to Syska & Hennessy's OnlinEnvironments.
Control network: A collection of DDC microcontrollers distributed throughout a facility that use a control protocol and one or more network media to communicate. Control protocol: An electronic language spoken between microcomputer-based DDC controllers to pass values and commands.
To keep up to date with changing technology, the Construction Specifications Institute (CSI), Alexandria, Va., is currently studying the need to revise its MasterFormat, a nationally used formatting standard for nonresidential construction. Specifically, CSI is looking to adapt the standard to reflect advances in telecommunications technology.
Having already surpassed the billion-dollar mark in 1999, the photovoltaics market is projected to increase ten fold by the year 2010, according to a recent report by Allied Business Intelligence (ABI), Oyster Bay, N.Y.
The flicker chart below shows one measure of how power disturbances can affect power users. At any point above the orange line, light flicker will be noticeable, while above the purple line people will begin to become irritated by the intensity and frequency of the flicker.Flickering of the lights is a definite indication that there are voltage variations in the distribution system.
Talking to mechanical and electrical engineering firms these days, one gets the impression that engineers hold more sway in building design and construction than ever before.
Photovoltaics (PV)-which directly convert sunlight into electricity-have come a long way since their early days as a source of power for spacecraft and remote communications systems. Solar technology is now available in a variety of building materials, including skylights, curtainwalls, canopies, sunshades a...