March/April 2011
Editorial
Wind turbines: One of the most potentially dangerous electrical workplaces on the planet
Feeling lucky? Would you tempt fate by climbing a metal ladder hooked to an energized 34.5 kV cable?...
Features
Pedal to the metal for EV battery technology
Electric vehicles may be the glamour application for high-tech batteries,but other areas could end up pulling the technology forward....
How to make triacs and LEDs get along
The ubiquitous triac dimmer can still work with LED lamps, thanks to new ICs....
Squeezing out power
Nodes able to harvest tiny amounts of energy are now more practical thanks to recent developments in power management circuitry....
Motors, efficiency, and adjustable-speed drives
Though adjustable-speed drives are often promoted as energy efficient technology, they can hurt the efficiency of the motors they power....
Energy shorts
COMPANY NEWS
Partnership Gardner Denver, Peachtree City, Ga., will integrate Synchrony Inc.'s high-speed motors on magnetic bearings in its new Hoffman Revolution line of high-speed aeration blowers....
Smartphone apps that help save energy
App determines building energy efficiency Designed for the iPhone, the B3E application stands for Building Energy Efficiency Evaluation. This software...
Bigger role for world's best industrial insulator
You might call them the super-efficient insulators that few people have ever heard of. That's because nanoporous materials called aerogels have primarily...
DoE takes a look at refrigerant-free A/C
Attendees at the recent ARPA-E Energy Innovation Summit, co-hosted by the Dept. of Energy's Advanced Research Projects Agency - Energy (ARPA-E) and the Clean Technology and Sustainable Industries Organization got a look at water-based air conditioning/refrigeration developed by Dais Analytic Corp. that uses neither refrigerant gas nor a conventional compressor....
Are you America's next Top Energy Innovator?
No, it's not a new reality TV series. As part of the Start-up America Initiative, America's Next Top Energy Innovator challenge will give start-up companies...
Legislation
An Evolutionary Water Heater
The legendary biologist E.O. Wilson coined the phrase “punctuated equilibrium” to describe evolutionary development of living organisms. It seems that most of the time, evolution is a slow process, leaving some organisms unchanged for eons (witness the cockroach, or more appealingly, the ginkgo tree) Dramatic evolution, when it happens, progresses quickly as a result of some significant change in the environment or a completely new type of creature showing up there....
Invention of the month
DC-to-DC converter replaces alternator in a hybrid bus
When Allison engineers were designing their H 40/50 Hybrid drive for a bus, they needed low-power electricity (24-V) to power lights, radios, fare boxes, cameras, and other electrical features on the vehicle....
Energy figures of the month
Energy Figures of the Month
As technology advances make it possible for scientists and engineers to develop more energy-efficient and environmentally friendly products, some of these gains are being codified into new laws. Here we look at a few of the most recent mandates....
Energy myths
Energy Myths
Here are some common misconceptions people have about power lines, courtesy of the Powerline Safety Authority in Canada....
Energy Websites
Energy Websites
Energy Efficiency & Technology education day The Energy Efficiency Technology Conference and Expo, scheduled for May 26 in Santa Clara, Calif., features...
Letters to the Editor
The CFLs are coming! The CFLs are coming!
But will they save energy and reduce costs? Most EE&T readers who wrote us last month say the government has acted rashly without looking at all the consequences. Maybe the government and CGL manufacturers have just done a lousy job of educating folks about CFLs....
Sponsored Content
For the Appliance Industry, Energy Efficiency and Product Performance Go Hand-in-Hand
The appliance industry is facing significant changes in the ENERGY STAR program. These relate not just to how the ENERGY STAR mark may be used, but also...
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Videos
The Cleveland Museum of Natural History and The SmartHome Project
Featured Suppliers
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