понедельник, 30 января 2012 г.

A new source of energy - electricity produced from the air

A new source of energy - electricity produced from air New ischtonik energy - electricity produced from air

Watching the lightning during a thunderstorm, a natural desire to curb this powerful electrical energy and direct it for the benefit of mankind. And at a recent Boston 240th National Meeting of the American Chemical Society (240th National Meeting of the American Chemical Society in Boston), in his report, Professor Fernando Galembek (Fernando Galembeck) from the University of Campinas (University of Campinas) told of the discovery, which may be a first step toward that dream. His laboratory experiments were conducted to obtain an electric current from the atmosphere.

In an environment of humid air sprayed tiny particles of silica and aluminum phosphate. Over time, particles of quartz acquired a negative charge, and aluminum phosphate - yes, that created a potential difference to form an electric current.

Based on data obtained during the research, scientists are developing a device that can receive energy virtually out of nowhere, moving from humid air. Scientists believe these devices will become an alternative to solar cells in areas with high humidity, where high clouds and a little light. Also mounted on tall buildings, will be able to remove built-up tension in the air, carrying out, in addition, the function of lightning rods.

At the end of the report, among his colleagues broke Discussion. At the discussions there were questions about the validity of the results and practical applications. After the charge, thus obtained is incredibly small, many, many times less solar cell produced. However, all agreed in one opinion that studies are interesting and worth continuing.

суббота, 28 января 2012 г.

Kites with airborne wind turbines

Kites with airborne wind turbines Kites-board wind turbines

The idea of ​​using the winds of the upper atmosphere to produce energy has been put forward about four decades ago, but in While it was technically not feasible. Now, using new materials and advanced technology, on the realization of the idea of ​​working a few companies. Energy Joby - one of them. Its design is similar to a huge kite that supports a lot of turbines.

The push required for vertical take-off kite is made of motor generators associated with the turbines, and the orientation of the wind monitoring computer, which differentially regulates the speed of the rotor to keep it, if you move in a circle. Winds passing through the turbine generators are forced to work at high speed. Electricity generated by the turbines is transmitted to the base via a leash made of composite materials, which strengthens the entire structure to the ground on earth.

Initial tests were conducted at an altitude of 600 meters to the formulation of about 30 kW of energy. However, the turbines are designed to work them into the upper atmosphere, where the wind is much stronger and, consequently, power generation will be much greater. The second factor to boost power, driven by higher numbers of turbines, mounted on mnogokrylom snake.

Mr. Bevirt of Energy Joby company said that the system is designed to withstand strong winds and the period of complete absence of wind. She is able to take off and land, depending on weather conditions. The design takes into account various emergency situations up to break the cable and the refusal of several systems. The ultimate goal is to expand such power in the world to produce a supply of cheap and clean electricity.

пятница, 27 января 2012 г.

Glowing trees could replace street lights

Glowing trees could replace street lights Glowing trees may replace street lights

A bright golden light of street lamps can be replaced in the near future on a fluorescent green light from the leaves. Scientists from Academia Sinica (Academia Sinica) and the National University of Cheng Kung (National Cheng Kung University), located in the cities of Taipei and Tainan (Taiwan, China) was implanted in the plant leaves glowing gold nanoparticles, similar in shape to sea urchins, known as "Bio-emitting diodes."

The new nanoparticles could replace electric lighting of the streets "biological light" and will help to ensure that carbon dioxide is absorbed by 24 hours a day.

"In the future, with the help of bio-LED roadside trees can provide enough light to illuminate the streets at night" - the researchers say. "It will reduce energy consumption, plus everything is absorbed by carbon dioxide, since the bio-luminescence light-emitting diodes, as in ordinary sunlight, plants will photosynthesize (ie, to form organic compounds from carbon dioxide and water)."

Glowing trees could replace street lights
Chlorophyll, the green pigment that determine color of chloroplasts in green plants, and with the participation of which the photosynthesis is known for its ability to absorb light of a certain range. However, under certain conditions, such as the presence of violet light, chlorophyll can give yourself glow. If the pigment is affected by light with a wavelength of about 400 nanometers, usually green chlorophyll begins to "glow" red. Violet light achieved quite difficult, especially at night when illuminated leaves will need drivers and pedestrians. Scientists needed a source of violet light, which was found in nanoparticles of gold.

When short wavelengths of light invisible to the eye, working on gold nanoparticles, they begin to glow violet light. This violet light has an effect on the chlorophyll molecule, excites them and begins to exude pigment red light.

Scientists believe that the bio-LEDs will give enough light to the streets in the city are bright at night, as usual with us a night light. They can safely replace electric and gas lights.

Today, however, scientists have not yet completed work on the experiments in this field, and the glowing plants can be seen only in laboratories, such as aquatic plant Bacopa caroliniana.

"To be able to talk about the land plants that grow in the streets, further research is needed - says Krishanu Ray (Krishanu Ray), a scientist from the University of Maryland (University of Maryland), College Park. "In the near future can be seen glowing in the dark trees, but there is still a lot of work."

среда, 25 января 2012 г.

The largest solar tracker is set in South Carolina

The largest solar tracker is set in South Carolina The largest solar tracker is set in South Carolina

tracker - This is a technical device that can track the sun, ie, monitor the movement of the sun from sunrise in the east and sets in the west. Taking into account that the sun rotates follower of the sun, the solar panels are configured so that all day long to be directly opposite the sun, thus significantly increasing their power.

The German company IMO introduced the largest solar tracker, set in South Carolina, which has an area of ​​491 sq.m. and height of 16 m. The efficiency of the system increased by 30% due to the two rotational axes of sun tracking. As a result of which power generation is about 42 000 kWh per year, equal to the amount of energy generated by burning 15-a-half tons of coal and, correspondingly, to reduce emissions of 40 tonnes of carbon dioxide, which is equivalent to planting 6700 trees.

Opening ceremony will take place on December 14, 2010. At the opening act will be experts and public figures. We will talk about renewable energy and economic development.

The largest solar tracker is set in South Carolina

понедельник, 23 января 2012 г.

Solar tunnel between Paris and Amsterdam

Solar tunnel between Paris and Amsterdam Sun Tunnel between Paris and Amsterdam

Between Paris and Amsterdam opened the tunnel, covered 16 thousand solar panels. They provide electricity to a train passing by, moving at a speed of 300 km / hour. The length of the tunnel is 3600 m. This is the first project of its kind implemented in Europe. The cost of solar panels produced by Belgium's Enfinity, amounted to 14.14 million euros. They cover an area equivalent to the area of ​​eight football fields. In addition to that obtained with the help of their energy goes to work trains, electricity is also used for the needs of the city of Antwerp. Each year, the solar panels will generate 3.3 thousand megawatt-hours, which can cover the electricity needs of about 950 families.

According to specialists, the battery installation will reduce carbon dioxide emissions by 47.3 million kg over the past two decades.

Sunny tunnel between Paris and Amsterdam

суббота, 21 января 2012 г.

Supersooruzheniya: Petronas Towers

Supersooruzheniya: Petronas Towers
Supersooruzheniya: Petronas Towers

Petronas Twin Towers - a 88-story skyscraper, the height of each of which is 451.9 meters. Interestingly, the roof height 378.6 m and a total height of the building is achieved by a spire. Are these towers in Kuala Lumpur (the capital of Malaysia). Petronas Towers today are among the five highest buildings in the world, and from 1998 to 2004, they held first place in this ranking.

Designing a skyscraper going on with the participation of Malaysian Prime Minister Mahathir Mohamad, who offered to do it in the Islamic style. As a result, the complex has the form of two eight-pointed stars, and dome shapes reminiscent of mosques.

Construction of the towers lasted 6 years (from 1992 to 1998) under the guidance of architect Cesar Pelli. Originally the building site was selected a site that was later proved not suitable for such a heavy building. The reason for this was the composition of the soil of the site. Later, the construction site was chosen territory of the former racetrack.

The device is the foundation, which is the largest concrete foundation in the world, it took about 13 thousand cubic meters. meters of concrete. The length of piles supporting the amounts to almost 390 feet. The entire complex, which was created around the Petronas occupies 40 hectares.

Skyline suffered serious similar steel buildings as well as for its construction using special reinforced concrete. To decorate the facades of glass used (there are only 32 thousand windows).

Petronas Towers

towers are equipped with powerful luminous elements that are visible from afar. This light serves as a safety feature to flying aircraft did not touch the tower. And illumination enabled Petronas to join the beautiful buildings of the country and become one of the most notable skyscrapers of the world than is particularly proud of Malaysia.

Boasts Petronas and its underground parking, which also accommodates up to 4.5 thousand vehicles. To do this, building an original system for the connection between the floors. Comfortable and fast elevators are double-decker, the first "floor" elevator stopped only on odd floors, and the second - only on the even.

Petronas Towers

to the twins famous Celestial Bridge (SkyBridge) situated at an altitude of 170 m above the ground between 41 and 42 storeys. Its length is 58 meters, and the dead weight - 750 tons.

Skyscraper Petronas more office job. One of the towers is completely the same title company and the other tenants occupy, there are offices, exhibition and conference halls, an art gallery.

To date, the Malaysian skyscraper altitude record surpassed only United Arab Emirates with his brainchild Burj Dubai, a Taiwanese tower "Taipei 101" and the Shanghai World Financial Center.

Petronas Towers

gScreen spacebook - a laptop with a sliding screen

gScreen spacebook - a laptop with a sliding screen gScreen - a laptop with a sliding screen

In the fourth quarter of 2009, an American company gScreen plans to market a unique product - a laptop with a sliding LCD the screen. The idea of ​​using a laptop a few screens is not new, but its realization is quite rare. In the present novelty screens with a diagonal 15.4 "arranged one above another. In the case of two simultaneous screens, they can be separated as a closet door.

The configuration of the model is planned as follows:
- 2 LCD screen;
- OS: Windows VISTA / WIN XP PRO (optional)
- Processor: Intel Core 2 Duo P8400 2.26-GHz
- Memory: 4 GB of RAM (2GB DDR2 SO-DIMM x 2)
- Hard Drive: 320GB 7200-rpm
- Video Card: NVIDIA ® GeForce ® 9800M GT with 512MB dedicated memory
or NVIDIA ® Quadro FX 1700M Graphics with 512MB dedicated memory
- Battery: 9-cell battery
- Interface: IEEE 1394 1 Graphics Card Output (15-pin, D-Sub) X 1, HDMI X 1 Mic-in X 1 , Line-in x 1, Headphone X 1 PCI Express Card X 1
- Power Supply: AC Power Adaptor Output: 19V DC, 90W Input: 100 ~ 240V AC, 50/60Hz universal Battery Pack Li-ion 9 cells

gScreen spacebook - a laptop with a sliding screen