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Old 09-12-2021, 02:20 PM   #11 (permalink)
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Quote:
Originally Posted by redneck View Post
.

Here’s another one.

Low cost per kWh.

https://www.gravitypower.net/




>

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I realize that this is simplified for explanation - but - you would actually use a PUMP to pump the water and TURBINE to generate the power. The pump would only move high pressure water under the piston, and the turbine would be used to generate power from the water moving out from under the piston.

I see a problem with maintaining those seals? There does not appear to be access to them.

I'm sure the design has progressed from there!

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Old 09-12-2021, 02:52 PM   #12 (permalink)
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Sounds like it belongs to the unicorn corral.
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Old 09-12-2021, 02:57 PM   #13 (permalink)
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Why couldn't the turbine and pump be the same thing?

Otherwise you'd need a valve.

This kind of reminds be off the hydraulic hybrid, only the use and scale is much different. But on a hydraulic hybrid the pump-motors both convert hydraulic energy into some other form or vice-versa.
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Old 09-12-2021, 04:32 PM   #14 (permalink)
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Quote:
Originally Posted by thingstodo View Post
I realize that this is simplified for explanation - but - you would actually use a PUMP to pump the water and TURBINE to generate the power. The pump would only move high pressure water under the piston, and the turbine would be used to generate power from the water moving out from under the piston.

I see a problem with maintaining those seals? There does not appear to be access to them.

I'm sure the design has progressed from there!
Modern pumped hydro uses reversible turbines. No separate pumping system is used.

https://voith.com/corp-en/11_06_Bros...ge_einzeln.pdf
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Old 09-12-2021, 04:39 PM   #15 (permalink)
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Sounds like it belongs to the unicorn corral.

Pretty much every system mentioned is this thread has been built and shown to work. Very different than the HHO generators and magnets in the unicorn corral.

The question is if they are economically viable compared to other grid storage systems.
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Old 09-12-2021, 05:00 PM   #16 (permalink)
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Has anyone tried a rack railroad on a mountainside?

Wouldn't water require variable pitch blades or the Wells_turbine?

With the winches, using the four cables to keep it centered in the bore sounds like a loser.
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Old 09-12-2021, 08:27 PM   #17 (permalink)
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Has anyone tried a rack railroad on a mountainside?

Wouldn't water require variable pitch blades or the Wells_turbine?

With the winches, using the four cables to keep it centered in the bore sounds like a loser.
redneck linked one in this thread

ARES Nevada is developing a 50MW GravityLineTM merchant energy storage facility on approximately 20 acres at Gamebird Pit, a working gravel mine in Pahrump, Nevada. This project will employ a fleet of 210 mass cars, weighing a combined 75,000 tons, operating on a closed set of 10 multi-rail tracks.
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Old 09-12-2021, 09:30 PM   #18 (permalink)
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I looked again:
Quote:
ARES GravityLine’sTM fixed motor, chain-drive system
Sounds more like a cable car, but close enough. I was thinking about minimizing the length of the road.

en.wikipedia.org/wiki/Rack_railway#Locher_(1889)
Quote:
The Locher rack system, invented by Eduard Locher, has gear teeth cut in the sides rather than the top of the rail, engaged by two cog wheels on the locomotive. This system allows use on steeper grades than the other systems, whose teeth could jump out of the rack. It is used on the Pilatus Railway.

Locher set out to design a rack system that could be used on gradients as steep as 1 in 2 (50%). The Abt system — the most common rack system in Switzerland at the time — was limited to a maximum gradient of 1 in 4 (25%).

Oregon City, OR, would be my candidate. They have one of the eight municipal elevators in the world. en.wikipedia.org/wiki/Oregon_City_Municipal_Elevator

Sounds like a job for the Boring Company.
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Old 09-13-2021, 02:38 AM   #19 (permalink)
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Quote:
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The question is if they are economically viable compared to other grid storage systems.
And this is why those concrete blocks and that crane seem to not be so efficient at all.
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Old 09-13-2021, 03:00 AM   #20 (permalink)
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The question of economic viability depends on certain assumptions.

Could papermill landfill waste pave our highways?

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