Monday, 6 December 2010
Sunday, 7 March 2010
for more info on the company visit www.bloomenergy.com
Thursday, 26 March 2009
Tuesday, 24 March 2009
The human body is a store house of energy and contains as much energy as a one ton battery which fuels our day to day activities. Now innovators around the world are conducting research to harness this energy to power the hi tech gadgets we heavily rely on.Movement produces kinetic energy, which can be converted into power. In the past, devices that turned human kinetic energy into electricity, such as hand-cranked radios, computers and flashlights, involved a person’s full attention but what if we could the same without giving as much notice as it requires.The countless hours that are spent at the gym or the jogging park could be utilised to drive a generator and produce electricity. This is the idea behind the Green Microgym in Portland, Oregon, where machines like stationary bikes harvest energy during workouts. Pedaling rotates a generator, producing electricity that helps to power the building. For now, body energy supplies only a small fraction of the gym’s needs, but the amount should increase as more machines are adapted. “By being extremely energy-efficient and combining human power, solar and someday wind, I believe we’ll be able to be net-zero for electricity sometime this year,” says the gym’s owner, Adam Boesel. His bikes, by the way, aren’t the first to put pedal power to work. In some parts of the world, cyclists have been powering safety lights for years with devices called bicycle dynamos, which use a generator to create alternating current with every turn of the wheels. Dance clubs are also getting in on the action. In the Netherlands, Rotterdam’s new Club WATT has a floor that harnesses the energy created by the dancers’ steps. Designed by a Dutch company called the Sustainable Dance Club, the floor is based on the piezoelectric effect, in which certain materials produce an electric current when compressed or bent. (The most common example is a cigarette lighter, in which a hammer causes a spark to be emitted when it strikes a piezoelectric crystal.) As clubgoers dance, the floor is compressed by less than half an inch. It makes contact with the piezoelectric material under it and generates anywhere from two to 20 watts of electricity, depending on the impact of the patrons’ feet. For now, it’s just enough to power LED lights in the floor, but in the future, more output is expected from newer technology. In London, Surya, another new eco-nightclub, uses the same principle for its dance floor, which the owners hope will one day generate 60 percent of the club’s electricity.
Wednesday, 18 March 2009
Bemoaning the poor load speed of Web pages or the crawl of media downloads could soon become a thing of the past following news that a team of Australian scientists have developed a technology capable of making the Internet up to 100 times faster than the current top-end performance offered by leading network providers.After some four years of development, which was spawned by the idea of a small scratch on a piece of glass, a team working out of the University of Sydney claims to have created a near-instantaneous and error-free method of providing online users with unlimited Net access anywhere in the world.“This is a critical building block and a fundamental advance on what is already out there,” commented Professor Ben Eggleton, director of the “Centre for Ultra-high bandwith Devices for Optical Systems” (CUDOS), which is based within the University of Sydney’s School of Physics. “We are talking about networks that are potentially up to 100 times faster without costing the consumer any more,” than they already pay.According to Professor Eggleton, whose scientific team beat its own deadline for completion by a full year in developing the new circuit technology, the recent advancement of optical fibre delivery has meant that online data has the capacity to travel at much greater speeds than those currently achieved, which is where the scratched glass comes into play.“The scratched glass we’ve developed is actually a Photonic Integrated Circuit,” he explained in a University of Sydney statement. “This circuit uses the ‘scratch’ as a guide or a switching path for information -- kind of like when trains are switched from one track to another -- except this switch takes only one picosecond to change tracks.“This means that in one second the switch is turning on and off about one million times,” he added. “We are talking about photonic technology that has terabit per second capacity.”An initial demonstration of the photonic technology has revealed it as capable of providing speeds around 60 times faster than today’s networks, which rely on electric switching, but the team is confident that further development will glean even quicker performance.
Not limited to just the University of Sydney, a contributing CUDOS team from the Australian National University played a significant part in the development of the Photonic Integrated Circuit. Further support was provided by the Technical University of Denmark while funding was made available through the Australian Research Council (ARC).
Saturday, 14 March 2009
Some of the known approaches for CO2 to fuel transformation such as direct photolysis, chemically reacting carbon dioxide gas (CO2) with hydrogen gas (H2) to create methane or methanol are not economically viable in creating transportation fuels for global consumption.By innovating at the intersection of chemical engineering and bio-engineering, they have discovered a low energy and highly scalable process to transform large quantities of CO2 into gaseous and liquid fuels using organic biocatalysts. The key to our CO2-to-Fuel approach lies in a proprietary multi-step biocatalytic process. Instead of using expensive inorganic catalysts, such as zinc, gold or zeolite, with traditional high energy catalytic chemical processes, the process uses inexpensive, renewable biomolecules to catalyze certain chemical reactions required to transform CO2 and water (H2O) into fuel molecules. Of greatest significance is that the process occurs at low temperature and low pressure, thereby requiring far less energy than other approaches.The energy efficient biocatalytic processes which the technology makes use of actually occur in certain micro-organisms where carbon atoms, extracted from CO2, and hydrogen atoms, extracted from H2O, are combined to create hydrocarbon molecules.The technology allows these processes to operate on a very large industrial scale through advance nano-engineering of the biocatalysts and highly efficient process design.
Tuesday, 24 February 2009
Link : www.scientistlive.com