Did you know that #wind can cause structures to resonate like guitar strings?
And did you know that this phenomenon can be used to harness #energy from the wind?
A short 🧵 on this alternative wind energy device
1/ Before we dive in, why is it even necessary to harness energy in alternative ways?
It's because turbines aren't optimal in ALL scenarios.
👉 Lack of space (e.g. cities)
👉 Turbulent winds (e.g. cities)
👉 Hard-to-adapt foundations (e.g. buildings)
👉 They're noisy
2/ But vertical-axis turbines could do the job right?
Right! And there is a long history of research behind them.
They work in tight spaces, turbulent winds, and the sheer stress on foundations is smaller.
But, this doesn't mean there isn't a better way...
3/ Energy from Turbulence 💨
For the sake of innovation, we took a closer look at @VortexBladeless who are harnessing wind energy using counter-intuitive physics.
With structures that maximise oscillation as opposed to hampering it like wind turbines.
Dancing in the wind 💃
4/ Vortex Shedding 🌀
The devices are designed to vibrate at a range of wind speeds by changing their resonance frequency.
This vibration is caused by an invisible phenomenon called 'Vortex Shedding' where the solid structure created down-wind whirls when exposed to winds 🍃
5/ How does it generate ⚡ ?
Once the device starts oscillating from side to side, the movement will displace copper wires within a magnetic field, creating an alternating current.
6/ Inspiration from disaster 🌉
The Spanish team behind the idea were inspired by the collapse of 'Galloping Gertie', a bridge in the U.S. that collapsed soon after it opened as it was designed before the harmonic oscillations of structures were even considered!
7/ But can it compete in its small-scale niche? 🤔
According to the website, the devices are:
👉 Low cost (100s of Euros for the 2.75m Tacoma Model)
👉 Silent
👉 Have a competitive LCOE over its life
👉 Works well in turbulent and low-speed winds
👉 Fits in tight spaces
8/ So why is it not out yet?
As a Start-up, there are many things that can be slowing them down.
👉 Technical delays?
👉 Regulatory delays?
👉 Funding issues?
👉 Market fit?
Whichever the reason is, we'd love to have one on our property to test out.
9/ Where does it fit?
Despite having a concept for a large-scale structure to rival turbines, we suspect their niche may be in the small-scale, #renewables niche.
In combination with solar and battery systems, these could be really interesting, assuming their LCOE is low (cost)
10/ What do you think, could these #Vortex devices go against typical Start-up odds and become a hit?
We hope so! Any solution to #decarbonise power generation is welcome.
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Others say it's not net-positive for the #environment.
So are smaller reactors☢️a good alternative?🤝
Small Modular Reactors (#SMR )promise to bring a 'modular', more adaptable solution.
Build for a very specific purpose?
👉+1 SMR
Need to scale up for the grid?
👉+10 SMRs (SMR Farm)
Need to ramp down because #fusion finally arrived?
👉 -1 SMR per year
Micro-reactors promise to bring portable nuclear using #SpaceX tech.
👉Fits in a container, hauled by truck/ship
👉Low-carbon
👉Perfect for off-grid emergencies
👉Swallow the diesel generator market
👉Doesn't need refuelling for >10 years
👉Made in Assembly Line
👉Less fuel=safe
1/ With all the talk about France's latest law on mandatory #solar roofing of car parks above 80 spaces, we think it's time to start talking about other symbiotic solar relationships 👇🧵
2/ Although car parks and roof buildings are optimal unused space in urban areas, there is also the need for #offgrid electricity ⚡ in rural areas which often rely on diesel generators when solar 🌞 PV isn't available.
3/ Also, climate change 🌎 is making #farming yields increasingly uncertain, and many farmers want to diversify their earnings to become more resilient
Who wants to be in a business where you can go bust from one year to the other?