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Is it possible to reverse pulley system while charged to maximise energy generation?

the efficiency is low because of all the friction. maybe use a friction less air seal. and use a some kind of auto gear so its gets easier too pull up, then switch for more force going down.

Dude, you are in desperate need of a dynamometer.

0:16 dont ask me that. i already know the ending.

BUILD BIGGER

Well done! I hope you get to give this another go with more expensive and hardier materials

I liked that. You should definitely look into a few more iterations of this vacuum system. But instead of electric motors to set the load against gravity why not combine the concept of the sand battery which is loaded with waste heat from trash gasification and incorporate that with your vacuum battery (think Boyle's law/ gas law). Your current set up is not optimized, I think your belts are causing losses due to the elasticity of the belts also there maybe energy losses due to temperature changes in the gas in your "vacuum" so yes you should redesign and optimize for a few more iterations of this.

WATER STORES ENERGY MATE

Better than pumped hydro, huh. Maybe you could combine the space it takes into the efficiency calculation as well to know how large of a vacuum chamber would be needed to replace a pond. I wonder how this compares to compressed air. Make another video about this! I must know dammit!

As for using old mineshafts for energy storage with weights mentioned in the start, I really have my doubts about the viability of that from a practical standpoint. I work in the mining industry as a geologist and maintaining an abandoned mine is very expensive and a huge liability. Underground mines are almost always below the water table, so there needs to be constant pumping and maintenance done to prevent flooding. The ventilation would also need to be maintained to prevent explosive gas buildups. Any unsealed areas could leech more toxic materials into the mine water. And mines are naturally unstable, they will collapse eventually.

Guess the energy density of this contraption

good idea

The mineshaft example is similar to water resivor batteries. When you have small amounts of energy, you pump water uphill. And then when you need energy, you let the water run downhill over a turbine.

Charge the battery when air pressure of the weather is low, and discharge when the air pressure of the weather is high?

Would be interesting to see how it loses efficency over time as I assume the charge-discharge you presented were performed right one after the another. I have a hunch that those homemade syringes don't hold vacuum well over longer period of time, like a day or some hours even maybe...

73% for a 3d printed prototype is awesome lol

Un permutador metalurgico

1:00 water storage like that already invented

Well, since you excluded from this scheme a bulky, heavy heat accumulator with 100 tons of sand, then this is already a success. And seriously, I like the elegance of this solution, even in spite of the many "extra" mechanical parts of the generator-battery, because they are elements of surprise - they can fail at any moment, which will spoil the operation of the system. But the concept itself works and if it is brought to 80%, then it is already worth doing on a large scale. My guess is that the closer this system is to a free solar or water resource, the less efficient it can be. And, conversely, the further north, where the need for energy is higher, the more efficient this system should be. Well, even 73% will come in handy somewhere, although of course, the more the better.

Echt een super leuk idee! Als ik verstand had van electronica dan had ik ditnook gemaakt!! Ik vind dat je zelf commentaar geeft ook stukken beter dan die robot die je in je andere filmpjes gebruikt hebt! :)) Ik heb geabonneerd

Considering the ideal gas law: PV = nRT I'd love to see you incorporate an efficient thermal aspect to this design to see if you can further improve the efficiency of storage / discharge.

Imagine springs exists... such a wasted time. LOL

you'll be loosing most energy through friction. It would be interesting to see if very light lubrication helps at all.

doctor who

dantavius?

I imagine the biggest challenge is gonna be making it hold charge for longer periods

You should be able to improve the effectiveness of this approach to power storage.

0:47 They've been trying to sort something like that out, based on that gravity and weight principle, in large scale to work with hydrogen fuel cells to store excess energy from wind turbines during the day and then to use the stored energy at night. Cool stuff.

Great Project :)

But I do like the vacuum idea you're on to something but that gravity pump goes nowhere

You can't store energy in gravity if gravity is a force your storing energy from compression in a cylinder no different than an air compressor or a diesel hell the small rigs that pump oil do this your just making a pump that's gonna fail plus there is no way to effectively use this compression energy on large or even portable scales

well one way is having a disconnect to the motor so you can manually prime the battery

that chart seems to ignore the laws of physics conservation of momentum and environmental loss. in order to get returns of magnitude you specify you would need to scale to an unsustainable point.

Great ❤

You mention that the system at 1:05 would require too heavy of a weight to be practical. Do you think if a gravity system used a clockwork escapement and gearing, could a smaller weight (maybe 20-25 Kg) and a high efficiency generator motor provide enough energy for household use? I would be willing to wind a clock in my basement every day if it meant I didn’t have to pay an electric bill!

A terrible idea executed to perfection. The perfect formula for youtube.

Try making a mechanism that unseals the pistons when the motor is working, use 2 motors insted of one and divide the work half pulling half droping, cheers and greetings from DR!

Think you can use wind power to pump the vacuum?

Storing vacuum is harder than you think to maintain

10 of 10 stars for execution and documentation of the experiment. ❤👍 great entertainment and very detailed execution. for the actual energy-storage idea itself, I give it less than 10% chance to survive real life trials. Vacuum based storage using pistons requires insane friction at large scale. This experiment would not scale well at all but for small home experiments like this it was a very interesting experiment. 👍

Cool contraption. What you built is actually a constant force spring. Your setup is very similar to the FRC robot that team 4907 built in 2022 for our end-game mechanism to "jump" up to the traversal bar. Do a CZcams search for "4907 jumping robot" to see it. That used a 6.5 inch diameter cylinder with a 33 inch stroke producing a nominal 480 pounds of force. We found that lubricating the seal to cylinder wall contact was critical to get the energy back out. Also, a brushed DC gear motor isn't going to be very efficient. For industrial purposes you'd want a 3-phase AC motor, or at least a brushless DC. Also, watts isn't a measure of energy, it's a measure of power. You want to know Joules. You can calculate this with Work (energy) = Force x Distance. You know the force (atmospheric pressure times area) and you know the piston displacement distance, so you can calculate the theoretical energy stored. Then you can measure the actual efficiency of charging and discharging. Also, note that this won't work the same at sea level vs. at high altitude. In fact the force will be significantly different and you need to account for the location in the design.

Hey man, you can't measure energy in Watts. That's ridiculous you finished quiet complicated project and making such primitive mistakes making it all no sense. Watts are power measuring units.

Any energy storage is fundamentally limited with used materials chemical bonds forces.

Sure, lithium is efficient in charge-discharge, but the most important thing here is reliability and price. The fact that you have 70% efficiency at home makes your project way better than the costly and dangerous lithium batteries. I feel like there should be at least some ways to increase the % up to 80

CZcamsrs are solving world problems

I would retest the efficiency at different time lengths of storage, 12 hours, 24 hours, and one week maybe. I feel like the issue with this system is the air that will leak into the vacuum if the seal isn't perfect.

Dude, you should fire your retard of an editor immediately, with all these sounds this video is literally unwatchable

This feels like it would start leaking air pretty quickly after slight use. So probably not great long term solution.

I wonder if a gear box would give you better results.

You can't actually reduce the use of fossil fuels with better batteries. What do you think the batteries and the green energy devices are made of? A solar panel doesn't produce enough energy to offset its energy cost during production... They usually last a maximum of 14 years, with most lasting 7-10 years. Hate to burst your bubble.