Like other incandescent lamps, HIR lamps utilize a tungsten filament, but the filament in HIR lamps is surrounded by a capsule filled with a halogen gas while the glass is coated with a material that reflects infrared light. A final rule, initially expected in 2012, was never published. In September 2011, DOE published the framework document for energy conservation standards for certain elliptical reflector (ER), bulged reflector (BR), and small diameter IRLs that were exempted from the 2009 final rule. (Note: DOE is required to issue either a proposed revised standard or a determination that no change is warranted no later than six years after the last final rule amending a standard.)Īdditional savings will come from extending the scope of the standard to cover exempted lamps. In a 2015 final rule, DOE determined that amended standards for IRLs would not be economically justified. Over that same 30-year period, businesses and consumers will save up to $18 billion in net present value savings, and carbon dioxide emissions will be cut by up to 106 million metric tons. According to DOE estimates, the 2009 standards will save up to 2.4 quads over 30 years. As a result, average IRL wattage will drop from about 75W to 55W. Improved HIR technologies will increase average baseline efficacy from about 14 lpw to 19 lpw. The federal standard, which took effect in July 2012, set an efficacy level in lumens per watt (lpw) that can be achieved by halogen infrared (HIR) lamps incorporating improved reflectors, coatings, and filaments. In June 2009, DOE issued a final rule amending the 1992 reflector lamp standards, although the most common lamp, a 65-watt BR lamp, and other various lamps at 50 watts and below were not included in the 2009 rule. In December 2007, Congress enacted EISA, which required DOE to extend the coverage of EPAct 1992 IRL standards to some previously exempted lamp types, effective June 2008. Use of BR lamps has ballooned over the past 15 years as manufacturers have taken advantage of a loophole that exempts them from federal standards.
PAR lamps are the most common type of IRL other common IRLs include "blown" PAR (BPAR) lamps, which are designed to be a low-cost substitute for widely used PAR lamps, and "bulged" reflector (BR) lamps.
The cone is lined with a reflective coating to direct the light. Incandescent reflector lamps (IRLs) are the very common cone-shaped light bulbs most typically used in track lighting and "recessed can" light fixtures (low-cost light fixtures that mount flush with the ceiling such that the socket and bulb are recessed into the ceiling).
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