incandescent bulbs return to the cutting edge
Two years ago, when Congress passed a new energy law, it wrote an obituary for incandescent lamps.
The law sets strict efficiency standards, which will come into effect in 2012, and there is no traditional incandescent lamp on the market that can be reached for a century.
The old technologies that help create the modern world seem doomed to failure.
But it turns out that the obituary is too early.
Researchers across the country have been racing to inject new life into Thomas Edison\'s bulb, a pursuit that has accelerated with new legislation.
In this case, a company is already selling a limited number of incandescent lamps that meet the 2012 standard, and researchers promise to launch a wave of innovative products in the coming years.
In fact, incandescent lamps are becoming a case study of government authorization to stimulate innovation.
Chris Calwell, a researcher at Ecos Consulting, which studies the bulb market, said: \"There is a huge misconception that incandescent lamps will soon disappear . \".
\"There have been more incandescent innovations in the past three years than in the past 20 years.
\"Compared to the old incandescent lamps, Philips Lighting\'s Halogen energy-saving bulbs are the first bulbs to stand out from this push.
They cost $5 or more each, while standard bulbs cost just 25 cents.
But they are also 30% more efficient than old bulbs.
Philips says 70-
Watt-Halogena Energy-saving devices emit the same amount of light as the traditional 100
The tile bulb lasts about three times and ends up paying for itself.
Currently, the production line is only available on Home Depot and Amazon.
Com is less efficient than compact fluorescent bulbs, which can save 75% more energy than the old onesstyle bulbs.
But the energy-saving series is being favored by consumers who don\'t like the light emitted by fluorescent bulbs or are plagued by factors such as slow start-up.
Time and mercury content.
\"We are going through double
\"With digital growth, we are continuing to expand our variety,\" said Jorge Fernandez . \" He decided what bulb to store at Home Depot.
\"Most people who buy light bulbs either buy a C. F. L.
Don\'t like it, or have identified C. F. L.
I don\'t work inside.
For lighting researchers involved in saving incandescent lamps, the goal is to come up with a product that matches the energy saving of fluorescent bulbs while maintaining the qualities that many consumers seem to like in incandescent lamps, just like the color of the light and the convenience of using the dimmer.
\"Since the 2007 federal energy bill has been phasing out inefficient incandescent lamps since 2012, we have finally seen a race to develop more efficient bulbs,\" said Noah Horowitz, senior scientist at the Natural Resources Conservation Commission.
A company called deposition science in Santa Rosa is doing some leading work.
Its technology is a key part of the new Philips bulb line.
Normally, only a small fraction of the energy used by incandescent lamps is converted into light, while the rest is emitted as heat.
Deposition Science applies special reflective coatings to gases-
Filling capsule around the bulb filament.
The coating acts as a thermal mirror that reflects the heat back to the filament, where it is converted into light.
While the efficiency of the first commercial product has only increased by 30%, the company said it has achieved 50% in the laboratory.
No lighting maker has yet agreed to bring the latest technology to market, but the company wants to convince one.
\"We built a better mousetrap,\" said Bob Gray, coating project manager for deposition science . \".
\"Now, we are trying to get people to break the path to our doorstep.
Experts predict that with new efficiency standards, more companies will develop special reflective coatings for incandescent lamps.
Three major lighting companies-
General Electric, Osram siwania and Philips-
Like the European lighting in Germany and Toshiba in Japan, they are all working on the technology.
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The wave of innovation seems to be coming soon.
David Cunningham, the inventor of Los Angeles, has a record of bringing lighting innovation to the market, and he has developed a reflective coating and lighting design for over $5 million of his own, he believes that this design can improve the efficiency of incandescent lamps by 100%.
\"Great interest,\" Mr.
\"All major lighting companies want exclusive sales once we have proven it feasible. ”Both Mr.
Cunningham and deposition science have been studying the work of Guo Chunlei, associate professor of optics at the University of Rochester, who announced at May that he had used lasers to punch holes on the surface of tungsten wires.
\"Our measurements show that the treated filaments are twice brighter than they were at the same power consumption,\" Mr. Guo said.
Sean rensler professor of physics at the Institute of Technology
Yu Lin, also saw the use of high-tech, iridium-
Coated filaments that can recover residual heat.
\"The efficiency of this technology can be increased by 6 to 7 times . \"Lin said.
Despite the ten-year campaign organized by the government and utilities to persuade people to turn to energy
Incandescent lamps still occupy about 90% of home sockets in the United States, saving compact fluorescent lamps.
In addition to the aesthetic and practical opposition to fluorescent lamps, the old-
The advantage of the style incandescent lamp is very cheap.
But the cheapest such bulb could disappear from store shelves between 2012 and 2014, which was driven out of the market by the government\'s new standards.
The compact fluorescent lamp, which costs $1 per piece, can be a cost-effective option, and consumers have to spend two or three times as much to get the latest energy --
High efficiency incandescent lamp.
The third technology, the light bulb using the lamp
LEDs, while significantly improving efficiency, are still expensive.
The price of a single LED bulb may exceed $100, and the results of the government test program indicate that there are still performance problems with these bulbs.
This shows that led-
Although it is widely used in professional applications such as electronic products and street lamps
It may not replace the existing technology at home soon.
Given that the price of new bulbs is very expensive, large lighting companies are gradually developing.
Osram will launch a new incandescent lamp range in September, which will increase efficiency by 25%.
The bulb will adopt a redesigned capsule, higher
There is quality natural gas in it, starting at about $3.
This is less than Philips products on the market, but they will have a shorter life span. G. E.
It is also planned to introduce a series of household incandescent lamps that meet the new standards. Mr.
Calwell predicts that there will be \"more flavors\" of incandescent lamps in the future.
\"It\'s hard to be an industry leader in crowded Area C. F.
\"I\'m field,\" he said.
\"But a company can really distinguish itself with better incandescent lamps.
An article on energy on Monday
The efficiency innovation of incandescent lamps falsely expresses the name of the university, and Guo Chunlei, an associate professor of optics who is using laser technology to improve bulb efficiency, is associated with the university.
It\'s the University of Rochester, not the University of Rochester.
A version of this article appears on page B1 of the New York edition with the title: New lights in old bulbs.
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