Many years ago now, I was watching an NHK (a Japanese broadcaster) program about how kinetic energy was going to be utilized in the busiest stations in Japan. The theory was simple; as people walk over a mat, their steps would produce electricity to help power the station. In any other station it might not work, but in a station that typically has 1.57 million passengers per day, that is a lot of people power.
Since then, there have been many companies attempting to utilize kinetic energy, with the biggest company likely being âPavegen.â They have their system in certain city sidewalks, airports, and even under sports turfs.
âThe downward force drives an energy-storing flywheel inside the tile, which spins to convert kinetic energy into electrical energy through electromagnetic induction. Itâs like a generator â only instead of spinning a turbine with wind, water, or coal, itâs spinning a flywheel with footsteps.â Grist
If that is not unique enough for you, that same tech can be used in shoes.
âThe researchers say that this method can produce a lot of watts relative to the surface area of the generator, with the proof-of-concept device generating around 10 watts per square meter in early experiments. They claim that theoretical estimates indicate up to 10 kW might be possible.â NewsAtlas
More work needs to be done to make kinetic energy more efficient, but there is just something fascinating to me about power generation that can fit seamlessly into our world without us noticing.
More Info On Kinetic Pavement:
More Info On Kinetic Shoes:
Ramin_HAL9001@lemmy.ml â¨3⊠â¨months⊠ago
What I want to know is, how much energy was used to create these floors, install them, and how much energy will be required to service them (the electronics) if they break down over the useful life of the installation, including how much energy was spent on resource extraction and processing.
Then I want to see that number compared as a ratio to the amount of energy these floors can generate over their expected useful life span, say 15 years in high pedestrian traffic areas.
I am highly skeptical that the ratio would even approach 1:1, I expect a net energy loss. But I could be convinced otherwise with some good data.
slazer2au@lemmy.world â¨3⊠â¨months⊠ago
Ummm, anywhere between fuck all and an unrealistic amount.
Blair@slrpnk.net â¨3⊠â¨months⊠ago
That quote was for the shoes
Broken_Monitor@lemmy.world â¨3⊠â¨months⊠ago
Iâve got to think this is why they arenât more popular. Itâs very unlikely they are efficient enough when the entire process is accounted for to produce more energy than was put in to create the overall system. Iâve heard about these occasionally for years, and if it was anything more than a gimmick I would have expected them to proliferate by now.