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Energy Harvesting

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Harnessing Energy from Water Mains. Category: New Inventions and Innovations (7)Dec-20-12 With the development of small turbines able to harness the energy of flowing water, water mains in Hong Kong may soon be delivering more than water. The new system consists of an external hydroelectric generator and an extremely efficient spherical water turbine which is lowered into the water. The turbine’s eight blades are carefully sized to intersect the largest volume of water while still balancing the water volume, water pressure and consumption of hydrokinetic energy. This allows the water flow’s energy to be harnessed without affected the water supply. A metal block at the opening of the pipe intensifies and compresses the water flow, which also improves the device’s efficiency. Because the turbine has no moving parts no lubrication is needed—eliminating the chance of chemical contamination. More Info: Window Socket Solar-Powered Outlet. Window Socket Solar-Powered Outlet (10)May-16-13 The sleek and intuitive Window Socket concept is a portable, solar powered socket designed to be easily attached to a window.

Meant to be easy to use with no special training, the small, round Window Socket features a solar panel surrounded by a suction plate and a converter that converts the energy to electricity. A battery on the device can store the power for later use, and it can provide up to 10 hours of continuous power when fully charged. More Info: Add Comment Comments We writing in Turkey. We are intresting your Window Socket Solar-Powered Outlet . Best regards Posted by Emre SEVGEN on May 16, 2013 It seems to be interesting Can u please send me complete details for PAKISTAN as i am interested to market it here.

We are a leading power backup solution provider of India. We will would be keen in evaluating your product, please send technical details and pricing. Regards, Posted by Gurdev Saini on May 18, 2013 Hi, best regards Dear Sir.

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Clip-On Wind Turbine. Clip-On Wind Turbine (4)Aug-04-13 The Colorado-based Cleantec hopes to make wind power more prevalent with the development of their 'clip-on' wind turbine. The current system consists of a multi-blade drag generator designed to be clipped to the top of existing solar panels. However, the team also believes the small turbine could also be used in other places, such as streetlight, pipelines and rooftops. The turbine blades are twisted slightly, so they can catch the wind at varying angles, the team claims the device can produce a 2000 W output. The project is currently seeking funding on Indiegogo. More Info: Add Comment Comments. Photoflow Harvests the Sun and Water. Photoflow Harvests the Sun and Water (3)Aug-13-13 Taking advantage of both the sun and rain, the Photoflow is a combination rainwater and solar energy harvester. Most developing countries are located near the equator, where both rain and sunshine are plentiful. The Photoflow, designed by NOS with such countries in mind, features eight triangular solar panels angled to capture rainwater and channel it to a filter and into a water tank.

An anti-reflective surface on the solar cells helps to reduce light loss due to reflection while a nano repellent film helps prevent dirt from collecting on the surface of the cells. The water tank itself is lined with a coating to help control bacteria and fungi growth, and each module is fitted with a lid at each end for easy cleaning and maintenance. More Info: Smart Window Blocks Heat, Generates Power. Smart Window Blocks Heat, Generates Power (8)Oct-26-13 A new smart window able to let in light, block heat and generate power could significantly reduce the amount of energy needed to heat, cool and light buildings. The window was created by a team from Shanghai University, who were hoping to create a transparent window that could also generate power like a solar cell.

They succeeded by sandwiching a thin film of vanadium oxide between two layers of polycarbonate. The vanadium oxide will turn metallic at temperatures over 154°F, reflecting infrared light while still allowing the windows to remain transparent. The VO2 also scattered light to the sides of the panel, which the team took advantage of by attaching a photovoltaic cell to the edge to capture the scattered light, harnessing enough power from a section only a few inches wide to power to 1.5 volt lamp. More Info: Add Comment Comments Posted by Andrew Wong Ka Hing on November 24, 2013 Posted by Yap HS on November 25, 2013.

Creating Batteries from Undersea Vents. Creating Batteries from Undersea Vents (2)Oct-27-13 A technology that uses hydrothermal vents on the ocean floor to generate electricity could alleviate one of the challenges of deep-sea exploration. A collaborative team from the RIKEN Center for Sustainable Resource Science developed the technology—a robotic-assembled system that basically works like a standard battery. The system takes advantage of the electron-rich ions found in hydrothermal fluid and the contrasting electron-depleted ions of seawater. By placing one electrode in the seawater and another in the hydrothermal fluid, a chemical gradient is created that produces an electric current. In tests, the system produced enough current to powers three LED lamps. Previous attempts to use hydrothermal vents to create electricity were based on the temperature difference of the vent fluid and seawater.

Image: WILEY-VCH Verlag GmbH & Co. More Info: Dragonfly-Inspired Turbine Harnesses the Slightest Winds. Dragonfly-Inspired Turbine Harnesses the Slightest Winds (5)Oct-27-13 The dragonfly-inspired turbine from Renzo Piano is small enough to be erected in a backyard and can harness energy from winds as low as four miles per hour. Based on the dragonfly’s ability to float on light breezes and still navigate through gale-force winds, the Dragonfly Invisible Wind Turbine is made of lightweight carbon and polycarbonate, which allows it to harness low winds and at low altitudes. It can also withstand the force of larger winds, due to its slim-line design, and, standing only 20 meters high and 35 centimeters in diameter, it is small enough for residential properties. More Info: Add Comment Comments Interested! Posted by Teddy Praxmarer on October 31, 2013 Great idea. Add your Comment: Wireless Array Harvests Waste Power.

Wireless Array Harvests Waste Power (4)Nov-11-13 Researchers have developed a power-harvesting device able to convert stray microwave energy into direct current voltage large enought to recharge a small electronic device. Created by a team at Duke University, the device is inexpensive to make and operates on principle similar to solar panels. Made of a series of five fiberglass and copper energy conductors wired to a circuit board, the device is able to convert microwaves (such as those from a WiFi hub) into 7.3V of electrical energy.

This amount is comparable to that achieved in solar cells. The team believes the metametal could be applied to the ceiling of a room to recover a WiFi signal or to improve the energy efficiency of appliances by recovering the power currently lost during use. More Info: Add Comment Comments Analyze that all energy in our environmental is use from solar power. Harnessing Energy from Noise. Harnessing Energy from Noise (5)Dec-09-13 Two separate teams of researchers have been developing a way to use piezoelectric materials to harness the energy in loud sounds, potentially leading to quieter engines and new ways to harness wind power. Stephen Horowitz, a research engineer based in Hunstville, has been working on sound-energy harnessing technology for the past decade. He and his team used a piezoelectric material to build a very thin, sensitive membrane of aluminum able to transform sound vibrations into enough electricity to power a small sensor.

They then attached the membrane to a liner that quiets the sound of the engine by canceling out certain frequencies. The project is being funded by NASA. In a second study underway at Georgia Tech, a team is trying to harvest the noise created by industrial hydraulic pumps and valves. More Info: Add Comment Comments Add your Comment: Generating Power from Changes in Humidity. Generating Power from Changes in Humidity (4)Jan-29-14 Water evaporation could be the largest power source in nature, as has been demonstrated by a prototype electrical generator that moves in response to changes in humidity. Developed by Ozgur Sahin, Ph.D, the generator features flexible planks covered with spores of the soil bacterium Bacillus subtilis.

This bacteria will become tough and wrinkled when dried, but return to its original form almost immediately after being exposed to water. Coating a tiny, flexible plank with a solution containing the spores caused the plank to flex in response to the humidity in his breath—a response Sahin was able to observe with the naked eye. The plank was able to generate 1000 times the force of a human muscle when the humidity was increased from that of a dry, sunny day to a humid, misty one—10 times the force produced by current materials used to build actuators. More Info: Seafloor Carpet Harnesses Wave Energy. Seafloor Carpet Harnesses Wave Energy (8)Feb-24-14 Inspired by the way a muddy seabed can absorb ocean waves, the seafloor carpet system offers a new way to harness the power of waves for use as an alternative power source. Developed by a team from UC Berkeley, the seafloor carpet is made up of rubber mat placed on top of a grid of hydraulic actuators, cylinders and tubes.

The carpet moves up and down with the waves, creating hydraulic pressure that is piped back to shore to be converted into power. The carpet is able to absorb more than 90 percent of the wave energy, and the team believes that 10.8 square feet of the carpet would create enough electricity for two U.S. homes. The carpet could also offer a low-cost method of desalination, since the power it generates could be used to power the desalination apparatus. More Info: Add Comment Comments One could add that simple Newtonian physics tells us that energy can't be taken from waves without some consequential effect somewhere. Triboelectric Generators Capture the Power of Friction. Triboelectric Generators Capture the Power of Friction (6)Mar-05-14 Researchers have created a simple prototype device able to harvest the energy created start-and-stop motions, such as rain drops, wind or human motions.

Professor Zhong Lin Wang of the Georgia Institute of Technology is leading the team of researchers as they create power generators that take advantage of the triboelectric effect—the term for the electricity created when two objects rub against one another and exchange electrons. The prototype generator features two circular sheets of metal that are brought into contact through rotary movements. Electrons flow between the sheets when they make contact, and separating the sheets causes one to hold an electrical charge that is isolated by the gap between them. A third disc equipped with electrodes is sandwiched between the metal sheets, which bridges the gap and allows a current to flow. More Info: Add Comment Comments This new Technology has great potential! Add your Comment: DualWing Generator Harvests Wind Energy with Wings. DualWing Generator Harvests Wind Energy with Wings (2)Apr-03-14 The DualWingGenerator from Festo replaces the conventional rotor blades of wind turbines with a pair of opposing, flapping wings.

Developed as part of the Bionic Learning Network, the DualWingGenerator is made up of a vertical column that supports a bottom and top pair of 'wings' measuring 98.4 inches across. As the wind moves over the wings, the upper and lower pair will move in opposing direction, creating a motion that is translated into rotary motion within the column. This rotary motion is then sent to an integrated electric motor to be turned into electricity. The DualWingGenerator can self-optimize and adjust to different wind conditions, and can harvest winds even at low speeds.

More Info: Transparent Film Harvests the Motion of Water. Transparent Film Harvests the Motion of Water (1)Apr-22-14 Energy-generating toilets may not be far away, thanks to a transparent, flexible film able to harness the motion of water and convert it into electrical energy. Youn Sang Kim and his team created the film by adapting a transducer using dielectric materials. Submerging the dielectric materials in water causes a double layer to form around their outside, and variations between that layer and the water will generate an electric charge.

The team has demonstrated that the motion from a 30 ml droplet of water is enough to power an LED. The electrodes used in the technology are flexible and transparent, so they could be applied windows and roofs as well as toilet bowls—anywhere they can capture the energy of raindrops and moving water. More Info: Better Batteries from Waste Heat. Better Batteries from Waste Heat (2)May-31-14 A novel method of transforming waste heat into electricity allows industrial waste heat be incorporated into more efficient batteries. The method takes advantage of the thermogalvanic effect—which describes the way the voltage of rechargeable batteries is dependent upon their temperature. When an uncharged battery is heated with the waste heat, it can be charged at a lower-than normal voltage. Then, once the battery has cooled, its lower temperature will allow it to be discharged at a higher voltage and thus release more energy than was originally used to charge it.

This extra energy, which was added in the form of waste heat, increases the battery's efficiency. The waste-energy harvesting system is able to capture very small differences in temperature fairly efficiently, and it is made of common materials that could be manufactured easily into a larger version suitable for industrial use. More Info: Add Comment Comments. Eco-Friendly Motor Powered by Static Electricity. Harvesting Energy from Changing Temperatures. Atom-Thin Piezoelectric Generator. Wind Tree Replaces Blades with Leaves. Energy Harvesting Tree from VTT. Award-winning device harvests energy from railway track vibrations. World’s most efficient thermoelectric material developed.

Austrian algae biofuel-production technology to debut in Brazil. Chemical reaction eats up CO2 to produce energy ... and other useful stuff. New heat-harvesting material made in $40 microwave oven. 'Thermally activated cooling system' puts waste heat to use.