Energy Vault
Mar. 3rd, 2021 04:10 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
ny_quantКак известно, главный недостаток "зеленой" энергии состоит в её непостоянстве. Солнце то светит то не светит, и ветер дует не всегда. Поэтому нам не обойтись без ядерной и/или ископаемой энергии. Если только не придумать способ запасать зеленую энергию в больших количествах. Литиевые батареи слишком дороги, да и лития на всю планету не напасешься. Очень хороши wind-pumped-hydro systems, но их далеко не везде можно построить. Индустриальные солнечные генераторы могут использовать расплавленную соль как резервуар тепла, но такие штуки тоже далеко не везде построишь.
И вот швейцарскав фирма Energy Vault придумала запасать энергию в виде потенциальной энергии кирпичей, которые кран поднимает на некую высоту. Когда нужна энергия, кирпичи спускаются вниз и переводят свою потенциальную энергию в электрическую. Просто как всё гениальное. Такие башни можно строить практически где угодно где люди согласятся жить по соседству с уродливым подъёмным краном высотой в 150м. На сайте Energy Vault есть фото их демо проекта и отличное видео с более подробными пояснениями.
Оказывается ещё в 2019 году SoftBank invested $110 million dollars in Energy Vault.
The bricks themselves are modular, and can be manipulated individually, with multiple cranes and pulleys moving numerous blocks at the same time. As a consequence, the Energy Vault system can ramp quickly and deliver (or absorb) large amounts of capacity and longer-term energy, depending on the need. The system is remarkably fast: According to Piconi, it can ramp from zero to 4 MW in 2.9 seconds, and is nearly linear in its delivery profile, providing milli-second response, and the delivering the first 1.3 MW in one second. The standard 35 MWh system is also relatively large, combining a tower of 150 to 160 meters with 6,000 to 7,000 bricks that each weighing 35 metric tons.
И вот швейцарскав фирма Energy Vault придумала запасать энергию в виде потенциальной энергии кирпичей, которые кран поднимает на некую высоту. Когда нужна энергия, кирпичи спускаются вниз и переводят свою потенциальную энергию в электрическую. Просто как всё гениальное. Такие башни можно строить практически где угодно где люди согласятся жить по соседству с уродливым подъёмным краном высотой в 150м. На сайте Energy Vault есть фото их демо проекта и отличное видео с более подробными пояснениями.
Оказывается ещё в 2019 году SoftBank invested $110 million dollars in Energy Vault.
The bricks themselves are modular, and can be manipulated individually, with multiple cranes and pulleys moving numerous blocks at the same time. As a consequence, the Energy Vault system can ramp quickly and deliver (or absorb) large amounts of capacity and longer-term energy, depending on the need. The system is remarkably fast: According to Piconi, it can ramp from zero to 4 MW in 2.9 seconds, and is nearly linear in its delivery profile, providing milli-second response, and the delivering the first 1.3 MW in one second. The standard 35 MWh system is also relatively large, combining a tower of 150 to 160 meters with 6,000 to 7,000 bricks that each weighing 35 metric tons.
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Date: 2021-03-04 11:29 am (UTC)Water Most Commonly Used in Storage.
Currently, pumped storage is being used to help integrate large amounts of renewable energy onto the grid, serving as an enabling technology that both improves reliability and reduces costs. Pumped storage hydro relies on two reservoirs sited at different elevations. Electricity that’s been generated but not immediately needed is used to pump water from the lower reservoir to the upper one. When power is needed, the stored water is released to flow downhill and power a turbine.
“One of the real challenges hydro faces is that it can take eight to 10 years to get a plant built,” said Greg Stark, the hydropower technical manager at NREL as well as the laboratory’s waterpower grid integration lead. “Given all the uncertainty in the power markets, people are hesitant to invest in a 10-year project.”
To help address these time-to-market concerns, the DOE has instituted the FAST Commissioning Challenge.
The Federal Energy Regulatory Commission has also recognized these challenges and has ordered that licensing decisions for closed-loop pumped storage projects be made within two years.
Several projects are in process, including the Gordon Butte project in Montana. The Gordon Butte system, which has been permitted and is expected to begin construction this year, will use two man-made reservoirs and three turbines to provide 400 MW of capacity and 8.5 hours of storage. Pumped storage has historically required a unique design and build strategy for every new project; however, the Gordon Butte project presents a replicable model, which could save money for potential developers.
“Pumped storage really comes into its own when you need very large amounts of power for an extended period of time,” Stark said. “Part of that is because the incremental cost to increase the duration for pumped storage is just building a bigger reservoir. It’s still the same turbines and other infrastructure, whereas with battery storage for example, if you want longer duration, you have to buy more batteries.”
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Date: 2021-03-04 07:21 pm (UTC)