What’s next: Bladeless wind turbines

October 21, 2011 by  
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Mahashweta Patra: Wind turbine Future of wind turbines As we know it You must be aware of the fact that wind turbines are very helpful in making efficient use of renewable source of energy. The wind turbines are such device, which convert various forms of energy into electrical energy. The kinetic energy first is transformed into mechanical energy, and is ultimately used to generate electrical power. In current times, wind turbines are mainly available in two versions. One is vertical wind turbines and second is horizontal wind turbine types. However, many portable forms of wind turbines are also developed to fulfill all day-to-day domestic needs like battery charging and many more. Research is still on to advance the wind turbine technology through various efficient ways. Wind turbines without blades are also invented in order to minimize many air accidents with birds and bats. One more concern is also taken into consideration regarding noise pollution created by wind turbines in land areas. In this way, many advanced form of wind turbines are demanded apart from conventional types of wind turbines. Need for change There is always a possibility of demerits associated with everything that exists in the world. The technology using wind energy also contains some major disadvantages along with it. Wind turbines should be always situated in areas with consistent wind supply. At the same time, wind turbines are also responsible for causing wildlife threat, noise pollution, disturbance with television and radio signals, and many more. However, the negative impacts associated with wind turbines are reduced through several modifications in their conventional designs. As a result, wind turbines with no blades are introduced due to which several complications like noise pollution, wildlife threat especially birds and bats, and radar interference are pacified. The bladeless wind turbines are also efficient to deliver a very low maintenance cost to the man. Therefore, some major bladeless wind turbines are invented. What’s next? 1. Bladeless wind turbines inspired by Tesla Bladeless wind turbine inspired by Tesla Solar Aero’s bladeless wind turbine is a noise-free way to generate wind power What’s new The new thing introduced in these wind turbines is the use of the design presented by Tesla. The conventional turbine blades are replaced by the parallel and thin metal discs with spacers. The entire device is enclosed in the form of compact portable set up. The device is able to convert the energy of fluid or airflow into potential work. As the wind flows through the areas between the disks, air passage ultimately adapts the inward flow direction and leads to disc rotation. As a result, the disc rotation also causes the shaft movement. The number of discs is directly proportional to the amount of power generation. What difference will it make The main highlights of bladeless Tesla wind turbines are the less noisy application, comparatively safer in use in respect of wildlife injuries, no radar interference situation, and many more. It is also useful in domestic as well as commercial aspects in terms of reliability and cost cutting factors. Problems The development, however, is still on with bladeless wind turbines. As a result, currently no definite manufacturing process has started yet. 2. Windspire Windspire Bladeless design and capacity to produce nearly 2000 kilowatt hours per year What’s new Windspire is another wind turbine that is very incredibly designed with no presence of blades. The unique sleek design makes it visually very attractive and safer for birds too. The device has efficiency to produce about 2000 Kilowatts hours power per year. The whole design is prepared with 30 feet length by 2 feet wideness. The Windspire wind turbine is very much efficient to reduce the chances of noise pollution. What difference will it make The Windspire wind turbine machine produces about 25 decibels of noise, which is almost equivalent to average noise produced in any living society. A wireless monitoring facility is also provided with such type of wind turbines. As a result, you can easily monitor or attain the complete information regarding power generation. Problem The only problem with Windspire device is the high purchasing cost. 3. Mekaro Akita’s windmill Mekaro Akita’s windmill Mekaro Akita has developed a windmill that uses cylinders replacing propeller blades What’s new The Mekero Akita’s windmill is a special windmill designed with no blades. The uncommon design helps to deliver harmless generation of electric power. What difference will it make The entire device works by using cylinders instead of wind blades. Around five cylinders are attached with 10-meter diameter measurement. Each of these cylinders rotates in order to produce electricity. Problem The initial electric unit is used to start the function of cylinders. The entire eco-friendly set-up is useful in two ways – for protecting birds from injuries and for using wind energy proficiently.

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5 Electric vehicles that can actually succeed

October 21, 2011 by  
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Aswin Krishna R: Electric Energy Cars Green technology is the latest technology. And that’s why big car manufacturers are coming up with green cars mainly electric powered. Though these cars are fuel efficient, the cost is high. But it’s a good long term investment. Lot of electric vehicles are available in the market and key to success lies in the fuel efficiency. Let us discuss top 5 cars which will definitely succeed in market. Nissan Leaf World Car of the year 1. Nissan leaf Nissan leaf is named as the World Car of the Year. This electric car is powered by grid electricity using lithium-ion batteries. Leaf is a compact car that allows 5 people with limited cargo space, it is easy to drive and it touches a top speed of 90 mph. You can drive only 100 to 120 miles when the batteries are charged fully which is enough for most of the people in the country but it is not suitable for long distances. Though it’s expensive, the mileage attained will be 99 mpg. It accepts electricity from a 110-volt, a 240-volt or a 440-volt plug. It scores 10 in green rating, 9.5 in safety and 7.6 in overall performance. Chevrolet volt Best Electric vehicle 2. Chevrolet volt It comes with a tech-exotic concept and it is voted as a North American Car of the Year. Chevrolet calls it an extended range electric car. It’s known for its powertrain, which is a unique feature. It comes with an electric motor that drives the car for first 40 to 60 miles, then the batteries will get depleted and the car will switch its mode to gasoline. Now, the engine acts as a generator and provides more electric power for the motor to run for 300 miles. As most Americans won’t drive more than 60 miles in a day, it’s the most efficient car with a mileage tag of 93 mpg equivalent. Volt is fun to drive with ample power, sporty handling and good space. But it comes with a high price tag. It scores 8/10 in overall performance, 9.5 out of 10 in safety and full marks in green rating. Coda Electric New technology 3. Coda electric Coda is Southern California based automotive company which started selling electric cars in recent years. It is one of the safe and affordable cars with green technology. The car comes with more space, it is one of the added advantage of this car because most of the electric cars are not spacious. Its top speed is 85 mph and it takes 6 h to charge and it will run up to 150 miles. It comes with electronic stability control (ESC) with traction control, 3 point seat-belts, ABS, battery management system with safest battery chemistry. It gets 8/10 in overall performance. Honda Fit EV Real Fit 4. Honda fit EV This is the Honda’s first fully electric car to be out in japan and US in 2012. It is spacious car, which has three driving modes named as Econ, Normal and Sport. Econ is the most energy efficient with a driving range of 100 miles per charge. If you want to drive fast, you can choose Sport mode which will give a top speed of 95 mph but the driving range will be low. Batteries will take 12 hours to charge in 120 volt supply and 6 hours for 240 volt. It comes with a smart phone app, so you can know the charge level at any time. Renault Twizy Small and Stylish 5. Renault twizy It is an ultra compact car with all the fundamentals associated with the car. It has two seats. It is definitely for traveling within the city, it is just like driving a scooter. But it saves 15% of energy when compared to a scooter. As it is small and compact, it comes with all safety measures. It requires 4 hours to charge and runs for 62 miles. As it is too compact, it is easy to drive in traffic and easy to park as it demands less space. It comes in two versions.

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7 Projects that aim to harness clean energy on a grand scale

October 21, 2011 by  
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Ankit Dahiya: Desertec One of the projects in North Africa that aim to harness clean energy on a grand scale. With the increase in global warming levels and also in the increase in the levels of pollution, the scientists have started going for renewable sources of energy or you can call it clean source of energy. These clean sources of energy do not pollute the environment and are quite cheap when compared to other conventional sources of producing energy. Thus they are so popular and everybody out there wants to try their hands on it. This clean source of energy has resulted in generation of large amount of energy to meet the growing needs of the population. There are various projects being undertaken to harness the renewable sources of energy on large scale. Here is a list of seven such projects that aim to harness clean energy on a grand scale. 1. Desertec The basic concept behind this grand scale project is that the desert area on Earth is large which is not being utilized properly. The desert areas are hot and are more concentrated with solar energy and thus can become a major source for producing solar energy. It is estimated that this Desertec project will produce the energy from the deserts of North Africa which will be quite enough to power all the Europe. This project is being developed on a large scale to utilize the most out of solar energy. More than twelve European companies have already invested in this plan and it will be decided by the end of year 2013. 2. Desertec Australia The Desertec Australia project is quite similar to the North Africa’s. This project will start in Australia which is believed to become the power house of Asia soon. Australia really has a strong solar potential and its climate is quite suitable for this project. This project would cost around $2.5tn and $5tn. The power generated can be transported through the direct current cables to the most parts of Asia. 3. The UK’s round three offshore wind farms The UK has come up with this huge power plant project which is expected to light up entire UK. This is actually a Wind farm which is to be constructed on the off shores of UK to utilize the most out of wind energy. This plant will have a capacity of 40GW overall and out of which 25GW is estimated to be completed by 2020. This project is highly appreciated as it is making the grand scale use of wind energy without creating any disturbance in environment. 4. China’s Jiuquan onshore wind farm China has always tried to make its economy the best one by going for various energy plans. This time they have come up with this grand scale wind energy farm which they are planning to setup by 2020. This project will produce an estimated energy of 20,000MW and the cost incurred for the project will be around Â¥120bn (£10.7bn). The construction of the project has already started and its being constructed rapidly to meet the needs of the growing population. 5. The severn tidal barrage UK has come up with various power plant projects and one of them is the tidal power plant. Since the UK is at the center of the ocean it has the advantage of all the forms of energy and they actually are making use of all these forms quite effectively. This power plant will overall produce an energy of 8.6 GW which will be the highest energy produced by any tidal power plant. This project would cost around £30bn and is estimated to start soon. 6 The Wando Hoenggan project The Ireland plant of tidal power is the largest power plant in the world till date but this will be outstripped by the grand scale power plant project which is being developed by South Korea. The South Korea has come up with a grand scale tidal power plant which will be producing 10GW of energy and the cost incurred for the project is estimated to be around $820m. This project will be built by the top UK firm named Lunar Energy and Korean Midland Power Company. 7. The Tsangpo-Brahmaputra hydroelectric dam China is currently leading the production of hydroelectric energy but will soon be surpassed by the latest project which is being estimated to produce double the energy produced out of all the dams in China. This large scale power plant will be developed on the river Brahmaputra and is named as Tsangpo-Brahmaputra hydroelectric dam. It will have a total capacity of producing 38GW of energy which is equivalent to half as large of the UK’s entire grid.

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7 Projects that aim to harness clean energy on a grand scale

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