The 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 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.
The Cree LR6-DR1000 recessed downlight was awarded the Grand Prize at the 2009 Lighting for Tomorrow - Solid State Lighting Competition. A repeat winner, Cree shared the prize with Philip's Color Kinetics for its eW Cove Powercore. The Cree LRP-38, a PAR38 bulb, and the LR6-HE (high-efficiency) were also recognized with Special Focus Awards for technical innovation and high efficiency, respectively.
Panasonic 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.
The 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?
When 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
Europeans (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).
With 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
The mad scramble to obtain incandescent bulbs ahead of the EU ban highlights a controversial practice—the forced obsolescence of old technologies. R&D, combined with market forces, often collude to bury legacy tech. But should government speed up this process? How important is consumer choice?
Backlight technology continues to markedly improve, day after day, making it possible to design LCD panels as thin as a picture frame. Many thought that the use of OLED technology would be the only way to provide ultra-slim TV sets, but this year Samsung’s introduction of a new type of LED (light emitting diode) technology completely changed that thinking. Now, there are LED LCD TVs with depths as thin as 1.2 inches.
On Wednesday, Energy Secretary Steven Chu announced the appropriation of $300 million from the American Recovery and Reinvestment Act for the Clean Cities program. The aim of the program is to reduce our dependence on fossil fuels and speed the development of alternative energies. A major priority is creating the infrastructure necessary to support nationwide fleets of advanced technology vehicles.
Gentlemen, start your debating—according to the National Oceanic and Atmospheric Administration (NOAA), the July average was the highest recorded ocean temperature in 128 years. July’s worldwide average of 62.6 will revive the global warming debates, inasmuch as some will cite this as evidence of climate change.
Energy efficiency standards have typically concentrated on two ends of the spectrum – full load efficiency and standby power. As a result, popular PWM buck regulators available today demonstrate high efficiency at full load (>80%) levels and incorporate standby circuitry to comply with the <1W and lower initiatives. Improved efficiency at all operating points is an important concern in the design of next generation “green” products.
Fool me once, shame on you. Fool me twice….well, you know the rest. When Raser Technologies claimed their re-jiggered Electric Hummer got 100 miles per gallon, I thought they fudged a few numbers. But for GM to claim 230 MPG for the Volt…well, that’s taking a trip to fantasyland, with magical goblins and unicorns.
Cars and light trucks sold in July got more miles per gallon than those sold in previous months, say researchers, who credit the Cash for Clunkers program. The average mileage for new vehicles rose from 21.4 miles per gallon in June to 22.1 mpg in July. That may not sound like much, but it's
One of the hottest trends in power is “conductive ink”—that is, ink that conducts electricity. Thus, we’ve seen the emergence of ultra-thin power solutions such as Fraunhofer Research Institution's silk-screened batteries. One of the variants is printable solar cells, a technology still in its infancy. But the US Air Force, in conjunction with Plextronics, has developed what they purport to be a “significant step forward in printing inexpensive solar cells.”
The Consumer Electronics Association (CEA) and the Information Technology Industry Council (ITI) have filed a legal challenge against a New York City law mandating door-to-door collection of e-waste. Local Law No. 13, taking effect July 31st, forces all electronic manufacturers doing business in NYC to provide free door-to-door collection services for covered equipment.
Nissan Motor today previewed its electric vehicle (EV) platform on a Tiida-based prototype. It also showcased a sophisticated EV-IT system developed to support electric driving 24/7. The dedicated EV platform is comprised of a highly rigid body, high-performance motor, compact lithium-ion battery with high power output and energy capacity.
Philips Lumec has been chosen by the Eastern Band of Cherokee Indians of western North Carolina to light their downtown streetscapes with their environmentally responsible LED lighting solutions. In doing so, they clearly place this town of 14,500 residents, located on the South end of the Great Smoky Mountains National Park, in the vanguard of communities choosing environmentally responsible LED lighting technologies.
Leadis Technology, Inc. (NASDAQ: LDIS), an analog and mixed-signal semiconductor developer of LED drivers for consumer electronic devices, today announced sample availability of the LDS9001 and LDS9003, two new LED controllers featuring Leadis' patent pending LED-Sense(TM) Temperature Compensation engine. This innovative feature allows for direct in-situ monitoring of the LED junction temperature without the need for an external temperature sensor
The Korea Advanced Institute of Science and Technology (KAIST) has purportedly created an Organic Light Emitting Diode that is 75% more efficient than previous models. Led by Prof. Kyung-Cheol Choi, the KAIST team discovered a new type of surface plasmon enhanced OLED. KAIST explains their finding thusly: “For surface plasmon localization, silver nanoparticles were thermally deposited in a high vacuum on cathode.
GE announced today that by 2015 it is developing a turn-key product portfolio that will empower consumers to build — both new home builders and existing homeowners — to efficiently consume, manage and generate electricity to enable an overall net zero annual energy.
Who knew those shady vendors hawking silk-screened t-shirts at tourist traps were leading the tech revolution? Actually, that claim belongs to the Fraunhofer Research Institution, but who’s keeping track? The German institute has developed a printable battery that is produced using a silk-screening process similar to that used in t-shirts.
IMEC announced that it has established new partnerships with solar cell material and equipment suppliers. These companies, including MEMC Electronic Materials Inc., Leybold Optics Dresden GmbH, Roth & Rau AG, and Mallinckrodt Baker B.V., have concluded joint-development agreements with IMEC in the frame of IMEC’s newly launched wafer-based silicon photovoltaics industrial affiliation program (IIAP).
A recent survey of electrical and lighting contractors demonstrates their importance in the specifying and recommendation of LED lighting products for building projects. According to the survey respondents, contractors are involved in recommending LED lighting more than 70% of the time. Yet a majority of respondents said they would be interested in receiving more training on product installation, benefits, and layout