March 11, 2008
February 14, 2008
solar thermal power plant
solar thermal power plant
February 12, 2008

Shawn Frayne’s Windbelt

Frayne’s device consists of a flat, taut membrane that flutters within its housing as air passes through it. At each end of the membrane are magnets that oscillate between metal coils as the band flutters, effectively creating an electric charge. According to the 28-year-old Frayne, prototypes of the Windbelt have generated 40 milliwatts in 10-mph slivers of wind, making his device 10 to 30 times as efficient as the best microturbines. 

video: http://link.brightcove.com/services/player/bcpid1214137061?bctid=1233395616 

Submersible Robot Runs on Sea’s Heat | LiveScience
To power its propulsion, the submersible gathers thermal energy from the ocean. When it moves from cooler water to warmer areas, internal tubes of wax are heated up and expand, pushing out the gas in surrounding tanks and increasing its pressure. The compressed gas stores potential energy, like a squeezed spring, that can be used to power the vehicle. 

Submersible Robot Runs on Sea’s Heat | LiveScience

To power its propulsion, the submersible gathers thermal energy from the ocean. When it moves from cooler water to warmer areas, internal tubes of wax are heated up and expand, pushing out the gas in surrounding tanks and increasing its pressure. The compressed gas stores potential energy, like a squeezed spring, that can be used to power the vehicle. 

February 10, 2008
February 6, 2008
building a dew catcher