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> Pumped hydro storage does not, as I already pointed out, require river valleys. It does not, in fact, need those other things. You make clear that you know no

> Pumped hydro storage does not, as I already pointed out, require river valleys. It does not, in fact, need those other things. You make clear that you know nothing about, even, pumped storage. (Maybe look up the word "penstock"?) Why would anyone trust you about others? I'm well aware of what a penstock is. This [1] graphic shows how a penstock functions in pumped hydro storage. You see that "upper reservoir"? That's an alpine lake that forms the body of water that flows down through the penstock and drives the electric turbine. You have to have the right geography to form that upper reservoir. If you tried to build a pumped hydro storage in Nebraska, you'd have to move massive amounts of earth to build that upper reservoir - essentially building an artificial alpine lake. This is prohibitively expensive to do, which is why hydroelectric storage is geographically limited. > Pretending that fuel synthesis depends on access to scarce raw materials (hydrogen, nitrogen? Really?) Hydrogen is almost entirely produced through steam reformation, which emits carbon dioxide. Effective hydrogen electrolysis needs expensive materials like titanium electrodes. 1. https://www.energy.gov/sites/default/files/styles/full_article_width/public/2021-12/wpto-pumped-storage-hydropower-illustration-12-23-2021.jpg?itok=zByAQ3j2 https://www.energy.gov/sites/default/files/styles/full_artic...

ncmncm 4y ago
Really, who do you imagine you are fooling? The graphic does not, in fact, portray an "alpine lake". It says, exactly, "Upper Reservoir". Did you hope people would not click through and see? The place where water in the system is at high pressure is not in the upper reservoir, but only lower down, inside the penstock. Which you now claim you already knew, after lying about it.
- Manuel_D 4y ago
  What did I get wrong about a penstock? > You see that "upper reservoir"? That's an alpine lake that forms the body of water that flows down through the penstock and drives the electric turbine. The pressure is at the bottom of the penstock at the turbine. I'm not sure how you came to the conclusion that I wrote otherwise. If the upper reservoir isn't raised - as in, an alpine lake - the there's no pressure in the penstock. Look at any picture of a hydroelectric storage facility: https://i0.wp.com/esbarchives.ie/wp-content/uploads/2016/02/turlough-hill_aerial-view.jpg?fit=714%2C471&ssl=1 https://i0.wp.com/esbarchives.ie/wp-content/uploads/2016/02/... https://www.ecogeneration.com.au/wp-content/uploads/2016/12/USACE_Kinzua_Dam_downriver-1280x640.jpg https://www.ecogeneration.com.au/wp-content/uploads/2016/12/... https://i1.wp.com/www.cleanfuture.co.in/wp-content/uploads/2021/08/ENR0416Pump08.jpg?w=900&ssl=1 https://i1.wp.com/www.cleanfuture.co.in/wp-content/uploads/2... If the upper reservoir isn't raised well above the river or lower reservoir, then there's no pressure to drive the turbines. If you didn't build the upper reservoir up high on a mountain forming an alpine lake, and instead built it on flat ground you'd just have a big useless pond. This is why geography is crucial for pumped hydroelectricity storage.
  - ncmncm 4y ago
    Who do you imagine you are fooling? Pumped hydro requires an elevated reservoir ("news at 11!"). It does not, in fact, require an alpine lake. Nor does the upper reservoir need concrete construction, as the pressure on its dike, if in fact one is needed at all, is limited to the depth of the water in it. You knew all of the above, but chose to lie about it.
    - deleted 4y ago
      [deleted]

ncmncm 4y ago

Really, who do you imagine you are fooling? The graphic does not, in fact, portray an "alpine lake". It says, exactly, "Upper Reservoir". Did you hope people would not click through and see? The place where water in the system is at high pressure is not in the upper reservoir, but only lower down, inside the penstock. Which you now claim you already knew, after lying about it.

Manuel_D 4y ago
What did I get wrong about a penstock? > You see that "upper reservoir"? That's an alpine lake that forms the body of water that flows down through the penstock and drives the electric turbine. The pressure is at the bottom of the penstock at the turbine. I'm not sure how you came to the conclusion that I wrote otherwise. If the upper reservoir isn't raised - as in, an alpine lake - the there's no pressure in the penstock. Look at any picture of a hydroelectric storage facility: https://i0.wp.com/esbarchives.ie/wp-content/uploads/2016/02/turlough-hill_aerial-view.jpg?fit=714%2C471&ssl=1 https://i0.wp.com/esbarchives.ie/wp-content/uploads/2016/02/... https://www.ecogeneration.com.au/wp-content/uploads/2016/12/USACE_Kinzua_Dam_downriver-1280x640.jpg https://www.ecogeneration.com.au/wp-content/uploads/2016/12/... https://i1.wp.com/www.cleanfuture.co.in/wp-content/uploads/2021/08/ENR0416Pump08.jpg?w=900&ssl=1 https://i1.wp.com/www.cleanfuture.co.in/wp-content/uploads/2... If the upper reservoir isn't raised well above the river or lower reservoir, then there's no pressure to drive the turbines. If you didn't build the upper reservoir up high on a mountain forming an alpine lake, and instead built it on flat ground you'd just have a big useless pond. This is why geography is crucial for pumped hydroelectricity storage.
- ncmncm 4y ago
  Who do you imagine you are fooling? Pumped hydro requires an elevated reservoir ("news at 11!"). It does not, in fact, require an alpine lake. Nor does the upper reservoir need concrete construction, as the pressure on its dike, if in fact one is needed at all, is limited to the depth of the water in it. You knew all of the above, but chose to lie about it.
  - deleted 4y ago
    [deleted]