Wesley
12-10-2006, 11:49 AM
this comes from the New York Times annual "best ideas" article in the Sunday magazine. it's one of my favorite things they do.
8 W of energy in a single step! We need to get all of these machines in the gyms hooked up the generators too!
http://www.nytimes.com/2006/12/10/magazine/10section1C.t-2.html?pagewanted=print
The New York Times
December 10, 2006
Energy-Harvesting Floors
By CLAY RISEN
The average human being generates about eight watts of energy with each step, most of which is expended as vibration. It may not sound like much, but take the 30,000 or more people who pass through a major-city subway hub at rush hour, and suddenly you’ve got serious power. That’s usually a problem for architects and engineers, who have to design structures to withstand such small but persistent pressure. But the Facility, a London architecture firm, sees it as an opportunity. The company proposes putting small hydraulic generators in floors to capture vibration and convert it into electricity.
The Facility will roll out a prototype energy-harvesting staircase next year and ultimately use the technology, dubbed the Pacesetter, as part of a larger project to revamp London’s South Central subway stations. “For each footstep we can harvest three to five watts of energy,” says Claire Price, the director of the Facility. “In a rush-hour period in this country, some of the larger stations experience 34,000 people walking through it. At three to five watts, you’re generating a lot of kilowatt hours, enough to power all of the lighting and audio equipment within the building and beyond.” Price and her company are also developing a similar unit to be placed in train tunnels — essentially, as Price describes it, “a microgenerator that resonates in tune with passing trains and that will generate power that will then power a series of wire-free L.E.D. light units, such as street lamps.”
8 W of energy in a single step! We need to get all of these machines in the gyms hooked up the generators too!
http://www.nytimes.com/2006/12/10/magazine/10section1C.t-2.html?pagewanted=print
The New York Times
December 10, 2006
Energy-Harvesting Floors
By CLAY RISEN
The average human being generates about eight watts of energy with each step, most of which is expended as vibration. It may not sound like much, but take the 30,000 or more people who pass through a major-city subway hub at rush hour, and suddenly you’ve got serious power. That’s usually a problem for architects and engineers, who have to design structures to withstand such small but persistent pressure. But the Facility, a London architecture firm, sees it as an opportunity. The company proposes putting small hydraulic generators in floors to capture vibration and convert it into electricity.
The Facility will roll out a prototype energy-harvesting staircase next year and ultimately use the technology, dubbed the Pacesetter, as part of a larger project to revamp London’s South Central subway stations. “For each footstep we can harvest three to five watts of energy,” says Claire Price, the director of the Facility. “In a rush-hour period in this country, some of the larger stations experience 34,000 people walking through it. At three to five watts, you’re generating a lot of kilowatt hours, enough to power all of the lighting and audio equipment within the building and beyond.” Price and her company are also developing a similar unit to be placed in train tunnels — essentially, as Price describes it, “a microgenerator that resonates in tune with passing trains and that will generate power that will then power a series of wire-free L.E.D. light units, such as street lamps.”