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/biz/ - Business & Finance

File: 83 KB, 1978x764, efficientenergy-from-water.png [View same] [iqdb] [saucenao] [google]

Free electricity from buouncy? Anonymous Wed Jul 17 21:17:26 2019 No.14846062 [Reply] [Original]

Someone explain to me why this won't work.
I think it'd need a latch at the bottom to let all the water escape and be filled by air, but besides that, the box should just keep moving up and down, right?

- it doesn't take a lot of energy to open/close valves or latches, right?
- it doesn't use pressurized air - the air just displaces the water that drains out of the box
- air is lighter than water so the box will be buoyant and rise
- since it's already submerged, opening a valve to fill it with water to make it sink is straight forward and doesn't take any energy
- bringing in and dumping water doesn't cost any energy if its along a river, and you'll probably never run out of water

Couldn't you just attach a generator to the box to get electricity? and wouldn't this generate a shitload of cheap electricity if you used a big enough box? Is this actually a legit way to make money?

>>	Anonymous Wed Jul 17 21:20:42 2019 No.14846106 You wouldn't get shit for electricity out of this, even with 100% efficiency.

>>	Anonymous Wed Jul 17 21:21:04 2019 No.14846113 i think it's being done, great concept. make a small scale one to test it out.

>>	Anonymous Wed Jul 17 21:22:05 2019 No.14846125 >>14846062 you can get cheaper energy from waves

>>	Anonymous Wed Jul 17 21:25:10 2019 No.14846175 >>14846062 You could just empty the water and spin a small turbine instead. Either way, the energy comes from the gravitational potential energy of water flowing down hill

>>

Anonymous Wed Jul 17 21:25:35 2019 No.14846182

congrats, it’s a fantastically inefficient hydroelectric generator. it relies on a flow of water down a gravitational potential. P=(mass flow per second)*g*(height differential)

there’s a reason why hydroelectric generators flow hundreds of cubic metres per second with hundreds of meters of gravitational head, and also a reason why they use rotating turbines instead of reciprocating mechanisms.

>>	Anonymous Wed Jul 17 21:27:17 2019 No.14846214 >>14846062 This is how wave generators work but it won't work in a rain collection system, you need to do it in the ocean and take advantage of the tides to get power on any appreciable scale.

>>	Anonymous Wed Jul 17 21:28:05 2019 No.14846231 So you have water coming in at a high place and leaving at a low place. How are you going to replace the water you're putting in at the top?

>>

Anonymous Wed Jul 17 21:30:16 2019 No.14846269

The energy required to run a compressor and fill the box with air is probably more than the energy created by the box. The air would in fact be pressurized if it was underwater.

You need a box that is light enough to float when filled with air, but heavy enough to sink when filled with water. You'd be limited on materials because salt water is highly corrosive. You'd lose money and energy building a new box ever now and then.

You'd be better off just putting turbines underwater and letting the tide spin them for you.

>>	Anonymous Wed Jul 17 21:30:40 2019 No.14846274 In step 3 you say open valve to let water in, this action would use more energy/power to do that what you generate, unless you hire slaves to do it 24/7 by hand... Get it?

>>	Anonymous Wed Jul 17 21:38:21 2019 No.14846413 >>14846062 Is this a joke? You invented an electric dam with way more moving parts and lower efficiency. Good job. It would work though.

>>	Anonymous Wed Jul 17 21:39:18 2019 No.14846427 >>14846182 This. I guess someone already posted it.

>>	Anonymous Wed Jul 17 21:41:01 2019 No.14846452 >>14846182 >>14846214 >>14846413 >>14846427 dam

>>	Anonymous Wed Jul 17 21:43:10 2019 No.14846485 >>14846062 thanks for the idea OP, lol im gonna be a millionare

>>	Anonymous Wed Jul 17 21:46:03 2019 No.14846534 Reminds me of that old meme: >shine light off mirror >before it can reflect slide another mirror in opposite to it faster than the speed of light >endlessly reflecting light ray >if this works ill be a millionaire!

>>	Anonymous Wed Jul 17 22:36:17 2019 No.14847307 Waterwheel you fucking brainlet

>>	Anonymous Wed Jul 17 22:42:32 2019 No.14847421 >>14846062 Dude, waves and tidal forces have much, MUCH more power.

>>	Anonymous Wed Jul 17 22:46:20 2019 No.14847495 File: 62 KB, 635x457, DA96F708-CA90-4708-98F9-0D282E6454E3.jpg [View same] [iqdb] [saucenao] [google] >>14846062

>>	Anonymous Wed Jul 17 23:31:50 2019 No.14848236 File: 1.99 MB, 1400x1297, mh8hl5fzufk21.png [View same] [iqdb] [saucenao] [google] >>14847495 Look guys, it's the lightning network!