asteroza + hydroelectric   46

Using a weird linear pelton water turbine to generate power from low head water sources
low  head  water  hydroelectric  linear  pelton  turbine  belt  drive  power  generator 
march 2019 by asteroza
Home - Lucid Energy
Stuffs a spherical (savonis? darrius?) turbine in water pipes for low head hydroelectric power generation at the edge of the water distribution network, beyond pressure vaults?
low  head  hydroelectric  water  turbine  power  generator  spherical  pipe 
march 2019 by asteroza
Heindl Energy - Gravity Storage
Another one of those engineered natural rock piston type hydraulic energy storage concept. Always figured the accurate cutting/fitting of the cylinder wall and piston sleeve would be a pain.
rock  cylinder  piston  hydraulic  energy  storage  pumped  hydro  hydroelectric  power  generator  Delicious 
june 2017 by asteroza
Storing energy at sea - Forschung Energiespeicher
Recent practical testing of using vacuum style concrete spheres at depth in underwater scenarios to store energy, by pumping seawater in/out of the sphere. Had a practical test to 100m, current pump/turbine tech limited to 700m...
pumped  hydroelectric  power  generator  underwater  vacuum  concrete  sphere  Fraunhofer  storage  energy  StEnSEA 
march 2017 by asteroza
Slightly insane airborne hydroelectric powerplant. The idea is to use a tethered blimp holding a fog/dew/cloud catching screen to grab water from air/clouds, with the tether doubling as a tube. The hydraulic head is non-trival, and can be shunted through through a water turbine to make power and recover the water for purification. If the generated power is enough, I suppose you could generate hydrogen gas on site for the blimps.
airborne  power  generator  tether  tethered  blimp  aerostat  balloon  fog  dew  mist  water  vapor  collector  mesh  screen  hydroelectric  green  energy  Delicious 
august 2014 by asteroza
Hydraulic Hydro Storage: The Optimal Energy Storage System
Interesting take on pumped hydro, using a giant solid stone piston for the compression mass, cut using an upper and lower ring tunnel connected by a wire saw. So basically an excavate in place scheme for a high mass, rather than say Gravity Power, which uses a vertical TBM and an artificial (concrete?) piston. Still uses water as the working fluid, no indication if this is closed loop. Some of the drawings even show the piston cut from the ground surface, which means as you store energy, this giant cylinder rock mass rises from the ground like a mountain...
pumped  wire  monolithic  green  cylinder  stone  hydro  mass  piston  power  generator  hydroelectric  saw  compression  energy  gravity  storage  Delicious 
july 2013 by asteroza "Energie-eiland" voor de kust van Wenduine
Belgium appears to be committing to an offshore pumped hydroelectric energy storage island in the North Sea, ostensibly to smooth out wind power supply and provide overnight storage. This in particular seems to be of the "hole in the ocean" variety.
structure  pumped  europe  offshore  green  sea  EU  north  hydro  island  facility  Belgium  hydroelectric  artificial  energy  storage  Delicious 
january 2013 by asteroza
One Per Cent: Green Machine: Storing wind power beneath the waves
This seems to be describing an underwater CAES setup, but I though the original concept was actually a pumped hydro based concept. Basically, a strong in compression concrete sphere has a positive displacement pump/generator placed on it, and pumps water out of the sphere at depth. This emulates a pumped hydro dam/lake/reservoir but with a huge hydraulic head. With a deep underwater CAES setup, you run the risk of the sphere becoming buoyant, which kinda defeats the secondary purpose of being an offshore floating wind turbine platform's anchor. Maybe it isn't actually CAES but a simple pressure regulation system to maintain minimum pressure to prevent excess vapor formation (and the risk of ice accumulation)?
CAES  ORES  ocean  offshore  renewable  energy  storage  concrete  sphere  pressure  differential  pumped  hydroelectric  power  generator  green  energy  grid  hydraulic  Delicious 
december 2011 by asteroza
Slocum.pdf (application/pdf Object)
Smart idea of using oversize concrete anchors that contain concrete pressure spheres to anchor floating offshore wind turbine arrays, using array surplus power to run (what has to be positive displacement) pumps to pump out water from within the sphere into the open ocean. Run the pump in reverse to generate power. Deals with a number of interesting issues in a clever way, such as a CAES setup causing excess buoyancy, and necessary mass for the anchors. I wonder if you can modify the bottom to be a suction anchor as well?
offshore  renewable  energy  storage  system  underwater  pumped  Hydro  hydroelectric  power  generator  floating  wind  turbine  anchor  ballast  dome  sphere  tank  filetype:pdf  media:document  Delicious 
june 2011 by asteroza
Gravity Power Grid-Scale Electricity Storage System
Basically uses a closed loop of a large and small bore vertical silos linked together, with a huge weighted piston in the large bore, and reversible turbines at the surface level to complete the loop. Sane if the drilling of the large bore doesn't cost a fortune. Prefer to do it in a seismically inactive area unless you can figure out how to keep the bore from collapsing in an earthquake. Since it's closed loop, head pressure is not the defining characteristic, rather the bore depth determines the drop time like a gravity clock. The trick is the raw bore depth head pressure isn't the driving force, rather the weight block's applied pressure. There is the potential to even do this offshore using floating pipes anchored to the bottom.
gravity  power  pumped  Hydro  hydroelectric  energy  storage  green  generator  underground  tunnel  silo  closed  loop  Delicious 
april 2011 by asteroza
Small-scale waterwheel hydropower generating buzz across Japan - The Mainichi Daily News
Considering most "rivers" and "brooks" are concrete ditches in japan, it's not that big of a deal to put in a small waterwheel for auxiliary power. I think the trick would be to design in energy storage at the waterwheel to be released during the daytime, if the water wheels are located in more rural areas. Possibly a simpler route to test early distributed grid generation capacity?
japan  low  flow  waterhweel  hydroelectric  power  generator  green  energy  retrofit  river  brook  small  form  factor  impact  electricity  Delicious 
november 2010 by asteroza
Dartmouth Wave Energy - Home
Now here's a potentially smart idea, a hybrid wind turbine tower/seawater water tower with the object of reusing the wind turbine tower's volume and height as a pumped hydro storage reservoir (much like a municipal water tank tower). The kicker is instead of electric pumps/turbines filling the tank, use wave buoy pumps to use wave power for primary tank filling. Though, to be honest, if one were committing to doing a pumped hydro intermediary energy storage system for load leveling, there may be merit in having an auxilliary electric pump driven by the wind turbine, or skipping that step and figuring out a way to direct drive a pump mechanically from the wind turbine (hydraulic remote transmission assembly, or possibly a driveshaft, or a driveshaft going to a combiner transmission connected to the water turbine generator), so you have only one electric generator, near sea level. Note this scheme only works for monopiles and gravity bases, not offshore floaters.
hybrid  wind  turbine  pumped  hydro  hydroelectric  power  generator  green  energy  marine  ocean  offshore  wave  buoy  seawater  pump  Delicious 
november 2010 by asteroza
DLR Blogs - Energie-Frage der Woche: Mit welcher Technik lässt sich Energie überhaupt speichern?
So this dude Mathias Popp is applying for (or has) a patent for an above-ground pumped hydro reservoir design using an earthen ringwall island in the middle of a converted open pit mine lake. Apparently there is a trend to convert disused open pit mines to lakes anyways, and considering the mine itself is considered already fowled and "brownfield", it shouldn't be that hard to make the center island ring.
germany  ringwall  ring  wall  earth  earthen  berm  reservoir  pumped  hydro  hydroelectric  power  generator  battery  storage  green  energy  Delicious 
october 2010 by asteroza
Managing water for peace in the Middle East
Ideas to flood sub-sealevel depressions in northern africa and the mediterranean areas with mediterranean sea water, via hydroelectric dams fed by long canals or tunnels. Though what one would do with all the salt that would generate is an interesting question...
Qattara  depression  mediterranean  sea  pumped  hydroelectric  concept  green  energy  storage  Libiya  Egypt  sahara  desert  Delicious 
april 2010 by asteroza
Verne Global
For the europeans, this may actually be a viable option when carbon accounting for power must be taken into account when considering datacenter hosting.
VerneGlobal  Iceland  datacenter  colo  facility  hardware  electronics  devices  airside  cooling  geothermal  hydroelectric  green  energy  power  sustainability  Delicious 
october 2009 by asteroza

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