We were struck by a new feature on the horizon as we spent our annual weekend at Lewes, Delaware, this month. There’s now a 400-foot-tall wind turbine across the harbor on the Lewes campus of the University of Delaware. It rises above the tree line, its blades turning lazily in the seaside breeze, a source of alternative energy.
The Lewes wind turbine, which became operational on June 11, generates two megawatts of electricity. That’s enough to power 500 homes or the entire Lewes campus, with enough left over for occasional export to the regional grid. I’m used to roaring turbine- generators and have wondered how a wind turbine’s slowly turning blades (144-feet-long in this instance) accomplish the generation of this much power.
A website provided by Gamesa Technology Corp., the turbine’s manufacturer, explains that there’s a gearbox that steps up the rotation to match that of turbine-generators on the grid. The turbine’s nose can also be rotated to keep it pointed into the wind. Should there be too much wind, it can be shut down.
Gamesa is a Spanish company, but the Lewes turbine was manufactured at Gamesa’s plant at Ebensburg, Pa. It’s an experience, we discovered in another context, to drive past a tractor-trailer towing a turbine blade to a tower’s construction site. “What’s that?”, you wonder, if you don’t already know.
Currently, I learned from Wikipedia, the largest-capacity wind turbine, the EnerconE-126, has a rated capacity of 7.58 megawatts and an overall height of 650 feet. But “at least four companies – American Superconductor, Wind Power Ltd., Clipper Windpower and Sway – are working on the development of a 10 megawatt turbine.”
Blow on, ye winds of energy progress! – Doug Bedell
This isn’t an electric car blog, but we’ve been following developments toward diversified transportation because we truly need to shake up our transportation system. Today Ford announced an electric Focus, a car with special appeal to us, because we own a gasoline-powered model and love it.
The thing is, though, Ford announced the car in partnership with the Texas utility, Oncor. And that immediately illustrated a limitation of all-electric vehicles. Iris Kuo, the GreenBeat reviewer, reached to turn on the air conditioning and Ford’s representative in the car asked her to turn it back off. Reason: the A/C drains the battery too much. But they couldn’t figure out how to shut it off ”thanks to a confusing control panel.”
So there goes the Texas market, where temperatures are high and distances long. Ah well, it’s no doubt a lovely car for other, more temperate locales. (It should be available next year.)
Oncor has installed 1.2 million smart meters, which will help consumers decide when rates are lowest for charging electric vehicles. Texas at least has lots of energy reserves.
Buyers of the first all-electric cars are going to be a little like modern-day pioneers, figuring out what the best blend of charging and mileage might be. Sort of like how far horses could pull before they got too hungry and fatigued. There’s also a need to educate emergency responders about electrics, who could be endangered by the high battery voltage at the scene of an accident.
But this is important stuff, because our transportation system truly needs a broader mix of motive power. – Doug Bedell
We’re feeling a little differently about using our iPhone and other electronic gadgets after reading the Bloomberg Businessweek profile of the Foxconn Corp. in China, which operates from city-sized factory campuses and has had to give special attention to preventing suicides among its 920,000-plus employees in mainland China.
Not that Foxconn’s working conditions, apparently, are all that dire. They’re not necessarily crushing, just concentrated, apparently with middle managers who aren’t sufficiently trained or adept at dealing with employees en masse.
Terry Gou, Foxconn’s hard-charging founder and chairman, has been eating three meals a day at work and not getting a lot of sleep figuring how to keep the huge company growing while being more considerate of its employees at the same time. American firms like IBM, Cisco, Microsoft, Hewlett-Packard, Apple and Dell are wishing him well, for they are among Foxconn’s high-tech customers.
Gadgets come at a price, and the price is more than the figures on a sales slip. Consumers need to recognize that. Foxconn can concentrate efficiencies to produce electronic innards at highly advantageous prices, but consumers around the world should be rooting for it to become increasingly proficient at insuring the welfare of its armies of employees.
Chairman Gou seems to understand that installing suicide-prevention nets on Foxconn dormitories isn’t really the answer, though the nets were installed last May, Bloomberg Businessweek reports, after the ninth Foxconn worker jumped to his death this year, .
The pressures of obtaining enough raw materials and maximizing production in the face of brisk consumer demand – think of how effectively Steve Jobs revs up interest in Apple’s latest products, for instance – possibly haven’t allowed comparable attention to workplace issues. But Terry Gou seems intent on catching up there. Foxconn has launched a “Prevention-Reengineering Caring” program including “24-hour care centers staffed by certified counselors…and is teaching managers to be more attuned to workers’ emotional needs.”
“‘Yelling is not the only way,’ says Louis Woo, a 62-year-old Stanford graduate, whom Foxconn “picked to brief Bloomberg Businessweek on the company’s transformation into a more benign corporate citizen.”
Indeed not. Companies who sell tools for better, more efficient lives for consumers need to apply that same ingenuity to managing their workers well, as challenging an obligation as that may be. – Doug Bedell
We don’t normally write about computers because lots of other blogs are doing that well. We’re more interested in the processes and products that result from computer-assisted research and innovation. But we like to have a fast computer-at-the ready as much as anyone. So the news about “memristors” begs to be passed along.
Memristors? They’re microscopic devices that promise to allow the continued miniaturization of electronic circuits and extend “Moore’s Law” for decades. You’ll recall that Intel co-founder Gordon Moore predicted in 1965 that the number of transistors that can be added to an integrated circuit would at least double every two years. That, however, could have a limit, before computers will be fast enough to function in “lightbulb mode” – simply on and off, with no startup sequence or even momentary hesitation on tasks.
Until now. Alan Boyle, msnbc.com science editor, writes about memristors, the anticipated extenders of transistors, on msnbc’s Cosmic Log blog. Hewlett Packard, Boyle reports, just announced “a collaboration with memory-chip maker Hynix to get the first memristors to market in three years. One of the first goals will be to create a computer you can ‘turn on and off like a light bulb,’ said Stan Williams, founding director of HP Lab’s Information and Quantum Systems Laboratory. But that’s just the beginning.”
Here’s the definition you’ve been waiting for: “Memristors, or ‘memory resistors,’ take advantage of the fact that passing electrical current through particular types of material will change the molecular structure of that material so that it ‘remembers’ which way the current was running, and at what voltage, even when the power is turned off.”
Three years or so till computers that work in the blink of an eye…on-off-on, just that fast. Memristors figure to enable them to function virtually instantaneously, from startup on through.
Now that’s it’s assured that we’ll have all the processing power for whatever we can envision designing and building, we can get on with figuring out how to meet the world’s most pressing needs. We recommend Alan Boyle’s memristors piece, which includes a You Tube video with Stan Williams, as an encouraging prompt into the future. – Doug Bedell
– Photo: A circuit with 17 memristors was captured by an atomic force microscope. By R. Stanley Williams/HP Labs
Inventors often feel they are in the service of a higher goal than cleverness, but sometimes ingenuity has to be based on more than good intentions. This thought occured to us on reading in The New Yorker, as the anniversary of 9/11 approaches, of the Rescue Reel. This is a well-meaning device, created at a cost of $335,000 in the inventor’s personal savings, for letting people down from skyscrapers when it’s not possible to take an elevator or even the stairs.
Unless the $1,500 purchase price can be reduced considerably, or building codes in major cities become further sources of inflation, the Rescue Reel would seem to have limited potential, despite its cleverness. Its inventor, Kevin R. Stone, a California orthopedic surgeon, visited The New Yorker’s offices recently to describe how the device works, after explaining that he was deeply moved by the fate of the people trapped on the upper floors of the World Trade Center. So much so that he proceeded to develop the Rescue Reel on the model of a fishing reel.
“I remember thinking right then (on 9/11), If I can reel in a four-hunded pound fish, why can’t I reel out a four-hundred pound person?” Well, most of the panicked people would weigh less than that, a factor in favor of relieving stress on the mechanism, at least.
We get stressed thinking that a skyscraper descent system – down the exterior of a glass-walled tower – might even be needed again. Possibly so, but heaven help us if that’s the case. What needs to be learned from 9/11 is how to provide security against an attack on an office tower, and the Transportation Security Administration (TSA) has been doing a pretty good job of that at the nation’s airports. Also, we’re fighting a war to dissuade any further aerial terrorism. Maybe that won’t do it, but how many people can you picture letting themselves down the outside of a burning, smoke-belching skyscraper? Or even one in which the elevators are merely stuck, and you don’t feel like walking down all those stairs?
As The New Yorker puts it: “Providing a Rescue Reel for every office worker and apartment dweller above the reach of a Fire Department ladder would cost billions, yet no more than a tiny number of the devices, presumably, would ever be used; in terms of the greatest likely benefit to the largest number of people, mightn’t a sounder investment be colonoscopies?”
We’re not looking to deter inventiveness in writing this, and we note that Dr. Stone feels the price of Rescue Reels will come down considerably when/if they go into mass production. But all kinds of questions arise if you picture a smoke-filled corridor with dozens of panicked people, and a limited number of Rescue Reels on hand to save some of them. Better that we apply all possible ingenuity to attempting to insure that the ghastly sort of no-exit situation created on 9/11 doesn’t occur again.
Use Rescue Reels, we’d suggest, for making rappelling safer for rock climbers. Though there, it’s the sport that matters, not the assurance of a safe descent. Foreseeable utility needs to accompany inspiration, doesn’t it? – Doug Bedell
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