magical! Flags that can simultaneously use wind and solar energy
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Scientists at the University of Manchester have created flags that can use both wind and solar power. This new wind and solar energy collection flag was developed using flexible piezoelectric ribbons and flexible photovoltaic cells.
The piezoelectric strip allows the flag to generate electrical energy by swinging, and the solar energy comes from the use of flexible solar cells to generate electricity.
The research conducted by researchers at the University of Manchester is by far the most advanced of its kind and the first to use flags to collect wind and solar energy at the same time. The research was published in the Journal of Applied Energy.
The newly developed energy harvesting flag can power remote sensors and small portable electronic devices that can be used for environmental sensing, such as monitoring pollution, sound levels, and heat.
The purpose of this study is to provide cheap and sustainable energy harvesting solutions that can be deployed and left to generate energy without requiring maintenance. This strategy is called “deployment and forgettingâ€, which is the model that smart cities use when they use remote sensors.
Lead author Jorge Silva-Leon from the Department of Mechanical, Aerospace & Civil Engineering at the University of Manchester said: "The way we build a flag that repeatedly bends from side to side under the action of wind is also known as limit cycle oscillation. This makes They are very suitable for generating electricity uniformly from the deformation of piezoelectric materials. At the same time, solar panels also bring double benefits: they are a flexible material that triggers flapping at lower wind speeds, and of course can Generate electricity in the light. "
Dr. Andrea Cioncolini, co-author of the study, added: "Wind energy and solar energy are usually intermittent, and they can often compensate for each other. In stormy conditions, the sun usually does not shine, and calm days are usually associated with bright sun Linked together. This makes wind and solar energy particularly suitable for harvesting at the same time to compensate for their intermittent nature. "
The team used and developed unique research techniques, such as fast video imaging and target tracking with advanced data analysis, to prove that their flags are effective. The developed power generation system was tested under the wind speed of 0 m / s (no wind) to 26 m / s (storm / gale) and 1.8 grams of Lux constant light, simulating various environmental conditions. Under these operating conditions, the total output power can reach 3-4 milliwatts.
Dr. Mostafa Nabawy, one of the authors of the study, said: "Our piezoelectric / solar flags can generate enough power to power low-power sensors and electronic devices. Many potential within the micro-Watt milli-Watt power operating range Practical applications have appeared in avionics, remote areas of land and oceans, and smart city systems. We hope to further develop this concept to support more applications that require electricity, such as mobile devices for ecological energy power generation and charging stations. "
Dr. Alistair Revell, co-author of the study, emphasized the current and future research directions, saying: "We are currently using a new computing framework developed by the University of Manchester for modeling and simulation, The framework is based on the group ’s long-standing computational fluid dynamics. â€Using computers to simulate the interaction of fluid structures is called virtual engineering. By reducing the number of models that require physical manufacturing and testing, computers play a role in device development. Plays a key role.
(Originally from: Daily Science China New Energy Network Synthesis)
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