4 ms·
It does not scale. https://dothemath.ucsd.edu/2011/11/pump-up-the-storage/ https://dothemath.ucsd.edu/2011/11/pump-up-the-storage/
by RhodesianHunter 4y ago
It does not scale.
https://dothemath.ucsd.edu/2011/11/pump-up-the-storage/ https://dothemath.ucsd.edu/2011/11/pump-up-the-storage/
- didericis 4y agoGood article. I stand corrected.
- moloch-hai 4y agoIt is not a good article, at all. See above. It is cleverly written to fool the unwary.
- didericis 4y agoI’ll back out then/leave the debate to those who have the time to sort through all of this. The gist about the enormous amount of space needed in that article seemed accurate/more than I thought.
- moloch-hai 4y agoThe article is foolish from top to bottom. It says exactly one right thing: you can put a reservoir on a hilltop, and the "head" is the height of the hill, not the depth of the reservoir. You do not need a mountain. You do not need a high valley. It is cheap to build an earthen dike around the top of a hill, leveling off the hilltop peak for material. The hill does not need to be steep; a shallow slope just means a longer penstock, which costs more. A 300-meter hill is high enough for practical use. In most cases only a few hours' storage is plenty; you only need enough to make firing up a gas generator an occasional event.
- RhodesianHunter 4y agoLuckily the author took every opportunity to err on the side of underestimating the amount of water storage needed, to head off such pedantry that wouldn't significantly change the math.
- moloch-hai 4y agoUnfortunately, he got it wrong anyway.
- RhodesianHunter 4y agoLet me know when you have any evidence of what you're saying.