Researchers at Nanyang Technological University, Singapore (NTU Singapore), have developed a device that can generate energy from wind as gently as possible and store it as electricity. This device is known as a “light-breeze energy source.” When this device is exposed to the wind, with a velocity of two meters per second, it can generate a maximum of three volts and a power of 290 microwatts. This energy is capable of powering a commercial sensor and sending the data to a mobile phone.
The durable device, called a wind harvester or light-breeze energy source, can store energy in the form of electricity when not being used by a battery in the absence of wind.
The researchers believe that the new device can replace batteries in powering light emitting diode (LED) lights and structural health monitoring sensors. They are used in urban settlements to monitor the health of buildings like skyscrapers, bridges, banks, etc., allowing engineers to notice the physical damage on the structure. The device can be mounted on the sides of buildings in urban areas and would be good for buildings with enough wind power.
NTU researchers have developed a small-scale energy harvester, which could be used to power sensors and electronic devices. The device is self-sufficient and would only require occasional maintenance. It does not use heavy metals, which if not disposed of properly could cause environmental problems.
The innovation has received interest from different industries that are interested in the discovery. The NTU university is also trying to commercialize their invention. The study has help in reducing electric waste and has also find alternative sources of energy.
Riding The Wind
NTU researchers have developed a device that harnesses efficient wind energy at low cost and with low wear and tear. Its body is made of fiber epoxy, a highly durable polymer, with a main attachment that interacts with the wind. This causes charges to be formed on the film, and an electrical current is formed as they flow from the aluminum foil to the copper film. In laboratory tests, the NTU-developed harvester could power 40 LEDs consistently at a wind speed of 4 m/s.
Conclusion
NTU Singapore has developed a low-cost device that can harness energy from wind as gentle as a breeze. The device, called a wind harvester, also diverts any electricity that is not in use to a battery, and stores it in a battery. NTU scientists say their invention has the potential to replace batteries in powering light-emitting diode (LED) lights and structural health monitoring sensors. The research team is also in the process of filing for a patent with NTUitive, NTU’s innovation and enterprise company.
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