http://www.habanalabs.org/ One of Habana Labs broader goals is to actually design and install an experimental micro-turbine at the Habana Outpost restaurant in Fort Greene, so the workshop was more than just fun and games, and actually a sort of community-fueled research project.
Videos of the first two labs are available on their website, and they're well worth a look and learn.
for kids:
http://www.picoturbine.com/ _________________ I think I need to go chop off my own dick now. Yes, I think I will. I don't need my children growing up in a world populated by dipshits like you.
Conventional wind turbine technology has been a bit out of reach for most residential consumers living in urban areas—until now. Researchers at Hong Kong University and Lucien Gambarota of Motorwave Ltd. have developed Motorwind, a micro-wind turbine technology small enough for private use in both rural and urban environments. Unlike large-scale wind turbines, Motorwave’s micro-wind turbines are light, compact (25 cm rotor diameter), and can generate power with wind speeds as low as 2 meters/second.
The gear-like turbines can be linked to fit just about anywhere and a row of eight turbines costs just $150 for now (prices may decrease once the turbines are mass produced). A portion of the revenue raised from the sale of Motorwind turbines (available for purchase here) will be donated to Hong Kong University to continue researching renewable energy technology.
According to tests, turbines arranged within a surface area of one square meter and a wind speed of 5 m/sec generate 131 kWh/yr. We’ll be watching when the Hong Kong Sea School installs 360 micro-turbins (20 square meters) next month. A second installation of another 880 micro-turbines will be realized if the first installation is a success. Plans are also on the way for the World Wildlife Fund’s Hoi Ha Marine Reserve to install micro-turbines some time in the near future.
8 micro turbines with generator rated 50W for 10m/s of wind. Daily production: 1.2 kWh. Output= 12 to 100 volts non-regulated. Frame 2.2 meters long x 0.26 m height x 0.20 m wide. Stainless steel main support with 2 stainless steel posts (1.2 m long)
Product Description
20 micro turbines with generator rated 170W for 10m/s of wind. Daily production: 4 kWh. Output= 12 to 100 volts non-regulated. Frame 5.2 meters long x 0.26 m height x 0.20 m wide. Stainless steel main support with 4 stainless steel posts (1.2 m long) _________________ I think I need to go chop off my own dick now. Yes, I think I will. I don't need my children growing up in a world populated by dipshits like you.
Blow light is the world's smallest wind generator, making it a great environmentally friendly toy.
To use it, you just blow on the rotor to light up the LEDs. When the rotor blade turns it creates electricity to power two blue and one green LED lights.
To order, click on add to basket, or read on for more information.
Price: £9.99 incl. VAT _________________ I think I need to go chop off my own dick now. Yes, I think I will. I don't need my children growing up in a world populated by dipshits like you.
En ces temps où le souci écologique devient une priorité, la mini-éolienne Hymini, qui fait office de chargeur USB, saura attirer l'attention.
Fruit d'une collaboration entre les chercheurs des Universités de Cornell et de Harvard, le chargeur USB HYmini se propose de fournir de l'électricité à partir des énergies naturelles : le vent, le soleil. Ce qui n'est encore qu'un concept permettrait de recharger des petits appareils électroniques comme un baladeur ou un téléphone portable.
L'appareil comprend une mini-éolienne capable de recharger sa batterie Li-Ion qui, à son tour, assurera la recharge des matériels électroniques. Ses concepteurs assurent qu'une petite brise faisant tourner l'éolienne pendant 20 mn fournit assez d'énergie pour alimenter un baladeur iPod pendant 30 minutes, un PDA pendant 40 minutes, de quoi passer un appel de quatre minutes avec un mobile ou encore de prendre 20 photos avec un APN.
HYmini, un chargeur hybride écologique
Il est par exemple possible de placer sur un vélo ou de profiter du vent créé par le déplacement d'un véhicule pour assurer la recharge. Une automobile se déplaçant à 60 km/h peut ainsi permettre de fournir 8 heures d'autonomie à un baladeur ou 40 minutes pour un téléphone portable.
Et si le vent n'est pas suffisant, il sera possible de lui greffer jusqu'à quatre panneaux solaires en série fabriqués à partir de carton recyclé, chacun fournissant jusqu'à 140 mA et 5V. Et si vraiment vous ne pouvez faire appel ni à la force du vent ni à l'énergie solaire, il reste la possibilité de recharger l'appareil sur une prise murale.
Generated electricity* is used to charge an internal 1200mA/h lithium ion polymer rechargeable battery. Mobile phones, mp3 players, digital cameras, and any other 5 Volt device can be recharged from this portable power bank.
* The Hymini can also be recharged from the mains electricity supply (via an adapter).
Hymini weighs just 100 grams and is 134 x 88 x 33mm in size.
Wind Power
As you can tell by looking at this photograph of this handheld device, the wind turbine is very small. From the calculation of wind power we know that the power output of a wind generator is proportional to the area swept by the rotor, and proportional to the cube of the wind speed.
Therefore, in order to generate any useful electricity with a wind turbine of this size, high wind speeds are essential. Internal battery charging starts when the wind speed reaches 5mph, but it is recommended that the Hymini is fitted to a bicycle, car, or even on the arm while jogging in order to increase the speed at which the air hits the turbine.
The maximum charging wind speed is 40mph - no extra power will be converted above that speed. Peak power output for the turbine is 1 Watt.
The manufacturers (MINIWIZ Sustainable Energy Dev. Ltd.) claim that if Hymini is mounted on a bicycle or jogger for one hour, enough electricity will be generated to provide 15 minutes of mobile phone talk time, or to take 50 digital photographs.
The Hymini internal battery can output 5 Volts DC at a current of 200-850mA. With a full internal battery, an iPod can be charged in one hour via the Hymini USB charging connection. _________________ I think I need to go chop off my own dick now. Yes, I think I will. I don't need my children growing up in a world populated by dipshits like you.
J'avais posté je ne sais plus où ce truc sur les nouvelles éoliennes urbaines US. Super silencieuses et très efficaces avec les vents irréguliers et chaotiques des villes.
A la ville: des éoliennes rondes, silencieuses, puissantes et légères sur des toits d’immeuble. A la campagne: des sites de production capables de fournir l’électricité quand le client en a besoin, et pas seulement quand le vent souffle. L’éolien US compense son retard par rapport à l’Europe (on ne parle pas de la France, là) en peaufinant les détails.
Il y avait déjà les toîts végétaux pour absorber les chocs thermiques et réguler la température dans les bâtiments; les classiques toîts couverts de panneaux solaires qui assurent l’autonomie électrique de l’immeuble, et parfois même expédient des excédents de courant sur le réseau général; il y a désormais les toîtures éoliennes (rooftop wind systems), imaginées par des ingénieurs et des architectes fanas d’énergies renouvelables adaptées au milieu urbain. _________________ "Si on n'a pas une Rolex à 50 ans, on a quand même raté sa vie!" - Jacques Séguéla
en plus c'est fascinant à regarder. putain quand l'intelligence humaine engendre autre chose que des 4x4 ou du nucléaire, on respire _________________ y a plus de porcs que de gens bons
Working in Haiti, Shawn Frayne, a 28-year-old inventor based in Mountain View, Calif., saw the need for small-scale wind power to juice LED lamps and radios in the homes of the poor. Conventional wind turbines don’t scale down well—there’s too much friction in the gearbox and other components. “With rotary power, there’s nothing out there that generates under 50 watts,” Frayne says. So he took a new tack, studying the way vibrations caused by the wind led to the collapse in 1940 of Washington’s Tacoma Narrows Bridge (aka Galloping Gertie).
Frayne’s device, which he calls a Windbelt, is a taut membrane fitted with a pair of magnets that oscillate between metal coils. Prototypes have generated 40 milliwatts in 10-mph slivers of wind, making his device 10 to 30 times as efficient as the best microturbines. Frayne envisions the Windbelt costing a few dollars and replacing kerosene lamps in Haitian homes. “Kerosene is smoky and it’s a fire hazard,” says Peter Haas, founder of the Appropriate Infrastructure Development Group, which helps people in developing countries to get environmentally sound access to clean water, sanitation and energy. “If Shawn’s innovation breaks, locals can fix it. If a solar panel breaks, the family is out a panel.”
Frayne hopes to help fund third-world distribution of his Windbelt with revenue from first-world applications—such as replacing the batteries used to power temperature and humidity sensors in buildings. “There’s not a huge amount of innovation being done for people making $2 to $4 per day,” Haas says. “Shawn’s work is definitely needed.”
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
