Scientists have created flags that can generate electrical energy using wind and solar power.
The novel wind and solar energy-harvesting flags have been developed using flexible piezoelectric strips and flexible photovoltaic cells.
Piezoelectric strips allow the flag to generate power through movement, whilst the photovoltaics is the best known method of harnessing electric power by using solar cells.
The study, conducted by researchers at The University of Manchester, is the most advanced of its kind to date and the first to simultaneously harvest wind and solar energies using inverted flags. The research has been published in the journal Applied Energy.
The newly developed energy harvesting flags are capable of powering remote sensors and small-scale portable electronics which can be used for environmental sensing such as to monitor pollution, sound levels and heat for example.
The aim of the study is to allow cheap and sustainable energy harvesting solutions which can be deployed and left to generate energy with little or no need for maintenance. The strategy is known as “deploy-and-forget” and this is the anticipated for model that so called smart cities will adopt when using remote sensors.
Jorge Silva-Leon, from Manchester’s School of Mechanical, Aerospace & Civil Engineering and lead-author of the study, says: “Under the action of the wind, the flags we built bend from side to side in a repetitive fashion, also known as Limit-Cycle Oscillations. This makes them perfectly suited for uniform power generation from the deformation of piezoelectric materials. Simultaneously, the solar panels bring a double benefit: they act as a destabilizing mass which triggers the onset of flapping motions at lower wind speeds, and of course are able to generate electricity from the ambient light.
Dr Andrea Cioncolini, co-author of the study, added: “Wind and solar energies typically have intermittencies that tend to compensate each other. The sun does not usually shine during stormy conditions, whereas calm days with little wind are usually associated with shiny sun. This makes wind and solar energies particularly well suited for simultaneous harvesting, with a view at compensating their intermittency.”
Wind and solar energies typically have intermittencies that tend to compensate each other. The sun does not usually shine during stormy conditions, whereas calm days with little wind are usually associated with shiny sun. This makes wind and solar energies particularly well suited for simultaneous harvesting…
Dr Andrea Cioncolini, Senior Lecturer in Thermal Hydraulics
The team used and developed unique research techniques such as fast video-imaging and object tracking with advanced data-analysis to prove their flags worked.
The developed harvesters were tested in wind speeds varying from 0 m/s (calm) to about 26 m/s (storm/whole gale) and 1.8 kLux constant light exposure, simulating a wide range of environmental conditions. Under these operation conditions, total power outputs of up to 3-4 milli-Watts were generated.
Dr Mostafa Nabawy, co-author of the study, says: “Our piezo/solar inverted flags were capable of generating sufficient power for a range of low power sensors and electronics that operate in the micro-Watt to milli-Watt power range within a number of potential practical applications in avionics, land and sea remote locations, and smart cities. We hope to develop the concept further in order to support more power-demanding applications such as an eco-energy generating charging-station for mobile devices.”
Dr Alistair Revell, co-author of work, highlights current and future research directions saying: “We are currently making use of a novel computational framework for modelling and simulation developed at The University of Manchester, building on a long tradition of Computational Fluid Dynamics in the group. The use of computers to model fluid-structure interactions is increasingly referred to as virtual engineering, and plays a key part in device development by reducing the number of models which need to be physically manufactured and tested.”
The Latest on: Energy-harvesting flags
via Google News
The Latest on: Energy-harvesting flags
- First-of-its-kind flag renewable energy system developed by UK scientists on February 18, 2019 at 2:08 am
An energy-harvesting device uses inverted flags to generate renewable energy. University of Manchester scientists have developed a flag renewable energy generation device that is believed to be the fi... […]
- Watch how flags harvest both solar and wind energy on February 15, 2019 at 11:43 am
An energy-harvesting device based on the inverted flag concept is envisioned for Energy-harvesting flags generate electricity using wind and solar power. Source: Manchester University use in powering ... […]
- Scientists Develop "Energy Flags" on February 15, 2019 at 8:26 am
Scientists are calling these energy-harvesting devices “flags.” But if you ask me, I’d say they look more like rudders. Have a look for yourself: Here’s how they work... The energy flags have flexible ... […]
- Flags that generate wind and solar energy developed by researchers on February 14, 2019 at 4:32 am
Researchers created wind and solar energy-harvesting flags. (Image: University of Manchester) Scientists have developed flags that generate wind and solar energy. They created the energy-harvesting fl... […]
- Flying the – 4 milliwatt – flag for piezo/solar renewables on February 13, 2019 at 3:17 am
The flags, described in the paper Simultaneous wind and solar energy harvesting with inverted flags, published in the journal Applied Energy, can generate 3-4 milliwatts (mW) of electric power, which ... […]
- Flags Don't Just Blow in the Wind but Generate Energy from Wind and the Sun on February 12, 2019 at 12:30 pm
Instead, these flags, developed by researchers at the University of Manchester in the U.K., are designed to generate electrical energy using wind and solar power. The novel wind and solar energy-harve... […]
- Researchers create flags that harvest energy from solar and wind on February 12, 2019 at 6:05 am
The energy-harvesting device uses an inverted flag setup – where the leading edge is free to move but the trailing edge is secured. The body of the flags is made up of piezoelectric strips that ... […]
- Researchers develop flags that generate energy from the wind and sun on February 12, 2019 at 4:26 am
The research has been published in the journal Applied Energy. The newly developed energy harvesting flags are capable of powering remote sensors and small-scale portable electronics which can be used ... […]
- Energy-harvesting flags use wind and solar to power remote devices on February 11, 2019 at 4:10 pm
Scientists have created energy-harvesting flags that generate electricity using wind and solar power, an advance that could boost the use of remote ‘deploy and forget’ sensors. Energy-harvesting flags ... […]
- Flags that generate energy from wind and sun on February 11, 2019 at 9:04 am
Scientists have created flags that can generate electrical energy using wind and solar power. The novel wind and solar energy-harvesting flags have been developed using flexible piezoelectric strips a... […]
via Bing News