| | | | | | | | | 2020/09/11 12:00:31 プライベート♪ | | | Very few consumers are familiar with the new high-efficiency | |
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Very few consumers are familiar with the new high-efficiency halogen lamps ("HEH") which have hit the market in the last few years. High-efficiency halogen lamps maintain their initial lumens for as long as they operate. To enable the homeowner to add ambience, they're often controlled by a dimmer switch.As a source of both ambient and task light, recessed downlights ("cans") are widely used in American kitchens.
Dimmable CFLs cost more than non-dimmable versions. But if light bulb buyers only paid attention to the popular media or followed Energy Star prescriptions, they would only know to consider CFL reflectors as an affordable, energy-efficient lighting solution for their oft-used recessed downlights. The result? Much more artificial light where it's needed.Measured illuminance tells a very different story: the CFL floodlight casts just 15 foot candles of light onto the work surface in this demonstration electric garden lights.
The best of these models already exceed the energy efficiency requirements for incandescent reflector lamps scheduled to take effect in July 2012. We're all for selectively installing energy-efficient lighting around the home and place of business because it leverages the fact that the cheapest and cleanest kilowatt of electricity is the one that's never produced in the first place. The HEH? 51 foot candles.For homeowners motivated to make a small investment to reduce their electricity use and/or carbon footprint, a simple light bulb retrofit in their existing kitchen fixtures is a smart and easy strategy.
Their job is not to glow, but to throw light into a defined area or onto a specific surface.With CFLs in a kitchen, vision needs and light output are moving in opposite directions as time passes.For many homeowners, especially those with children, the kitchen is the most lived-in room in the house. But since there are two types of lower cost energy-efficient lighting options from which to choose, which is preferable in this application?
High-Efficiency Halogen Lamps Beat Compact Fluorescent LampsWe've looked at this question from many angles and have concluded that screw-in (self-ballasted) CFL reflector lamps, for many the obvious choice, are an inferior, energy-efficient lighting solution. It's a gathering place, a workspace, a study area, an entertainment venue and of course, a room in which to enjoy meals together. Reason 2 - Superior Illuminance:"Illuminance" describes the amount of light on a horizontal surface, measured in "foot candles. Measured distance of each light source to the surface of the light meter instrument was 50 inches. Compare the measured light (illuminance) on a horizontal surface from two floodlights, a 16 watt CFL BR30 (630 lumens) and a 34 watt HEH PAR30 (1) (612 lumens).
Reason 6 - Mercury-Free:High-efficiency halogen lamps operate without the use of mercury.As we've argued here, the exciting new high-efficiency halogen lamps (spot and floodlights), which are generally priced on par with premium quality dimmable CFL reflectors, are superior energy-efficient lighting solutions for consumers who value great light characteristics, thrift, dimming performance and environmental sustainability for their lighting dollar.Not only would such a lamp be more expensive to purchase, it would cost 36% more to operate and generate 36% more air pollution than the high-efficiency halogen lamp.Why does this matter?
Studies have shown that at age 65, the eyes need three times more light to see as well as at age 20. A 40 watt model was dimmed by 15% to reduce lumen output from 720 to 612. This presents a legitimate opportunity to save money and reduce air pollution and landfill waste by switching to energy-efficient lighting solutions. Unlike a screw-in CFL, which contains a precise electronic component called a ballast, neither frequent on/off switching, nor trapped heat will affect the performance or lifespan of these energy-efficient lighting solutions. All CFLs contain mercury which must be vaporized to create ultraviolet energy and subsequently, visible light."
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