Saturday, April 14, 2007
Friday, April 13, 2007
Kites fly in jet stream to generate electricity
Here's another interesting proposal: Meanwhile, Wubbo Ockels of the Delft University of Technology in the Netherlands has been developing another approach to airborne wind generation at lower altitude, with backing from Royal Dutch Shell and Nederlandse Gasunie, a natural-gas company. Dr Ockels’s idea is that a kite (without rotor blades) be launched from a ground station, turning a generator as it rises to an altitude of several hundred metres. When it reaches its full height, it alters its shape to catch less wind, and can thus be reeled back in using much less power than it produced when it was being paid out.Mr Shepard’s flying generator looks like a cross between a kite and a helicopter. It has four rotors at the points of an H-shaped frame that is tethered to the ground by a long cable. The rotors act like the surface of a kite, providing the lift needed to keep the platform in the air. As they do so, they also turn dynamos that generate electricity. This power is transmitted to the ground through aluminium cables. Should there be a lull in the wind, the dynamos can be used in reverse as electric motors, to keep the generator airborne.
more: http://economist.com/science/tq/displaystory.cfm?story_id=8952080
Sotheby's/Mastercard debut yuppycard to mixed reviews
from Blogging Stocks by Zac Bissonnette Sotheby's (NYSE: BID) and GE Money have teamed up to launch a Sotheby's MasterCard (NYSE: MA). Predictably, the card is aimed at wealthier consumers, and even gives them a chance to earn donations to their favorite museums. From the Wall Street Journal: A cardholder who has charged $10,000, for example, can convert the 10,000 earned points into a $100 donation to one of 17 U.S. partner museums [...] Anyone accumulating 2.5 million points can book a Sotheby's specialist to conduct an auction for a charity event. The piece goes on to note that some museums have been slow to sign on, preferring to go with relationships they already have. I'm really happy to see the consumer credit industry focusing some energy on higher net worth individuals (you need an income of 100k+ to qualify for the card). As you will learn from reading the book Maxed Out, the industry seems to relentlessly target those customers who can least afford it. Perhaps Sotheby's and MasterCard will show that there is money to be made providing credit to customers who can afford it, while also supporting the arts.
Subscribe to:
Posts (Atom)
Posts
