Blogs
Toshiba to release highly-efficient LED bulbs
October 6, 2009 6:42 am | by Jason Lomberg, Technical Editor | CommentsToshiba will become a big player in optoelectronics—if their lighting division has its druthers. The company will release high-output LED light bulbs with a total flux equivalent to that of a 60 W incandescent lamp. The “natural white” type and the warm white type feature total fluxes of 810 lm and 600 lm, respectively.
Dow to Sell Solar Roof Shingles
October 6, 2009 5:14 am | by Matt Daily | CommentsDow Chemical Co said on Monday it would begin selling a new rooftop shingle next year that converts sunlight into electricity -- and could generate $5 billion in revenue by 2015 for the company. The new solar shingles can be integrated into rooftops with standard asphalt shingles, Dow said, and will be introduced in 2010 before a wider roll-out in 2011.
Is the US Outsourcing its future?
October 5, 2009 6:34 am | by by Gary P. Pisano | CommentsToday, many people are looking to high technology sectors — like alternative energy — to be the growth engine that revives the U.S. economy and gets it back on track. They're in for a shock. During the boom years, when all seemed well, capabilities that underpin innovation in a wide range of products were continuing to deteriorate.
Proposed bill targets “Cyberbullying”
October 1, 2009 11:51 am | by Jason Lomberg, Technical Editor | CommentsRep. Linda Sanchez (D-CA) has introduced a bill designed to combat cyberbullying.” And in a rare instance of bipartisan solidarity, the left and the right stand opposed. Make no bones about it—the proposed legislation is a serious assault on first amendment rights. Dubbed the “Megan Meier Cyberbullying Prevention Act,” the bill is a reaction to the 2006 suicide of 13-year-old Meier.
Ohio State University takes first place at 2009 EcoCAR competition
September 30, 2009 9:25 am | by Jason Lomberg, Technical Editor | CommentsOSU has earned top honors at the 2009 finals of the Year One EcoCar competition. The OSU stable bested 16 other teams with their “Extended Range Electric Vehicle” design. The spiritual successor to Challenge X, EcoCar is a three-year collegiate advanced vehicle technology engineering competition
Company demonstrates world’s first nitride-silicon solar cell
September 30, 2009 5:39 am | by Jason Lomberg, Technical Editor | CommentsRoseStreet Labs Energy (RSLE) has created what they assert to be the world’s first tandem nitride/silicon solar cell. RSLE combined a silicon solar cell with a Nitride Thin Film to create their hybrid photovoltaic cell. According to RSLE, this hybrid will achieve “practical efficiencies” of 25-30% (typical efficiencies range from 12-20%).
Japanese companies forced to subsidize national solar power program
September 28, 2009 7:52 am | by by Jason Lomberg, Technical Editor | CommentsJapanese companies are being forced to foot the bill for an ambitious new national solar power program. According to Alpha Solar, “the government will oblige all Japanese companies to purchase excessive amount of energy and pay the double price to help installing solar panels.” The total “obligation” equals 9 billion Yen, and this will filter down to the consumer.
Phillips recognized as first entrant in DOE lighting competition
September 25, 2009 10:36 am | CommentsPhillips has been recognized as the first entrant in the Department of Energy’s Bright Tomorrow Lighting Prize (L Prize) competition. Intended to spur development of efficient LED replacements for incandescent bulbs, L Prize comes with a handsome reward--$10 million to the first group or individual to develop a 60 W replacement.
DOE's Solar Decathlon to Highlight Innovation, Future Green Jobs
September 25, 2009 4:47 am | CommentsThe U.S. Department of Energy today announced this year’s participants and dates for DOE’s 2009 Solar Decathlon, a competition that challenges students to design and develop houses that can provide their own energy from the sunlight – a clean, renewable source of energy. The twenty collegiate teams from the United States, Canada, Spain and Germany will each build a completely self-sufficient solar powered house
Fusion: the power source of the future
September 21, 2009 10:36 am | by by M. Simon, retired Aerospace electronics consultant | CommentsFusion is the power source of the future, goes the old saw. And for fifty years, it has always been "fifty years in the future." That may be changing with a number of new small fusion projects in the works or doing actual experiments. Let me mention first the ITER experiment (a tokamak design) which is the fusion project every one knows about.
Edison-socket LED Bulbs last up to 19 years
September 17, 2009 1:10 pm | by by Jason Lomberg, Technical Editor | CommentsPanasonic has released an LED bulb that purportedly lasts 19 years. The drawback? It’s only available in Japan (for now, anyway). Could the EverLed line jumpstart solid state lighting? According to Panasonic, the screw-in LED bulb lasts 40 times longer than equivalent incandescents. Obviously, independent testing is needed, but this is an impressive figure.
Quirky Vehicle to receive federal sponsorship
September 16, 2009 9:18 am | by by Jason Lomberg, Technical Editor | CommentsThe startup Aptera was recently denied a DOE loan for its Aptera 2e electric vehicle. Their three-wheeled, *ahem*, “curiosity,” didn’t match the loan criteria, but the incident raises an important question—should the government be sponsoring products in the private sector?
Power, Control and Management of Lighting Applications
September 15, 2009 6:28 am | by by Richard Zarr, National Semiconductor | CommentsWhen lighting applications started using solid-state sources, engineers began to understand the issues in the migration away from incandescent bulbs. It is fairly well known that LED sources lack the IR spectrum of their filament based counterparts requiring thermal management via conduction rather than emission. Driving and managing these solid-state light sources can be challenging
Light Bulbs and the Madness of Energy Efficiency Regulations
September 11, 2009 12:16 pm | by Dr. Peter Thornes, Dublin Ireland | CommentsEuropeans (like Americans) choose to buy ordinary light bulbs around 9 times out of 10 (European Commission and light industry data 2007-8). Banning what people want gives the supposed savings that are "good for them"—no point in banning what people don’t want! If new LED lights—or improved CFLs etc—are good, people will buy them—no need to ban ordinary light bulbs (little point).
Unravelling external Power-supply regulations
September 11, 2009 7:14 am | by Gary Bocock, Technical Director, XP Power | CommentsWith the aims of reducing energy wastage and improving distribution-network stability, regulatory authorities within the EU and US have been steadily introducing a series of measures that power-supply and equipment designers must consider. In the first instance, these measures specifically target no-load consumption and conversion efficiency for external power supplies of up to 250 W
