asteroza + gravity   26

Gravitricity
This one is a straight up winched weight in a shaft, rather than vertical bore hydraulic piston
gravity  potential  energy  storage  green  vertical  bore  silo  piston 
june 2018 by asteroza
The Black Swan Blog » Funicular Power – Newton’s Apple to the rescue
Funicular railway as a potential energy store is an interesting variation on the theme. This article basically describes ARES, but what about cable funicular railways? That would put the big motor/generator at the bottom station and make most if not all the cargo cars dumb and low cost. Either that, or go whole hog with an abt cog railway for even steep slopes...
cable  funicular  railway  gravity  energy  storage  green 
june 2018 by asteroza
SinkFloatSolutions | The affordable energy transition
Potential energy gravity based energy storage, using a huge mass on a winch over deep water.
ocean  buoy  buoyancy  buoyant  mass  gravity  potential  energy  storage 
november 2016 by asteroza
Gravity Battery Concept
The major costs driver is the cost of drilling the holes and lining them. A thinner tube is cheaper, but requires a longer tube. Oil drilling technology has really come along, so this is easier. Cast concrete slugs seem to be the cheapest mass.
gravity  battery  energy  storage  grid  power  generator  Delicious 
march 2014 by asteroza
EscoVale Consultancy Services GBES
The idea is to cut out a gigantic stone piston underground with diamond coated rope saws strung up between an upper and lower torus tunnel, then use that to compress a water column for a pumped hydro setup.
pumped  hydro  energy  storage  stone  gravity  piston  megascale  megaengineering  green  geological  Delicious 
december 2013 by asteroza
Electricity and Power Storage - Ares North America
Someone is finally getting around to implementing heavy electric trains on long grades as a gird energy storage system. Though admittedly the current system is smaller scale and for load leveling a wind power plant, and using narrow gauge rail along with a third rail in rural settings seems like a poor choice in the long term. Concept is sound, but having individual motor/generator cars is an interesting compromise. As long as the primary weight can be provided by cheap gravel, I suppose it doesn't matter.
railroad  electric  green  potential  leveling  railway  ARES  rail  grid  train  power  generator  load  energy  storage  gravity  concrete  gravel  battery  Delicious 
august 2013 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
GravityLight: lighting for developing countries. | Indiegogo
Interesting gravity charged/powered LED light for primitive situations, as an alternative to solar charged LED lights.
GravityLight  lighting  devices  electronics  hardware  camping  gear  survival  light  LED  harvester  energy  potential  gravity  IndieGoGo  Delicious 
december 2012 by asteroza
ESA Portal - Hypergravity helping aircraft fly further
Interesting use of high gravity centrifuges rather than high pressure press forges to cast advanced superalloys.
strength  lightweight  ESA  alloy  superalloy  aluminide  titanium  research  technology  metallurgy  science  materials  casting  metal  hypergravity  pressure  gravity  high  Delicious 
november 2012 by asteroza
Carbon Engineering
Theoretically, the gravity amine scrubber could be paired with a solar updraft tower to get the necessary airflow.
direct  air  carbon  CO2  capture  startup  materials  science  chemical  process  engineering  solvent  wet  scrubber  gravity  amine  adsorbent  Delicious 
october 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
BBC News - Goce satellite views Earth's gravity in high definition
That hole in the indian ocean sure is mighty suspicious. But the definition of the meaning of the "below geoid" level isn't clear to me. Does that mean the hole in the indian ocean is not a gravity dense area?
earth  gravity  map  space  science  research  observation  mass  distribution  geography  physics  reference  satellite  Delicious 
june 2010 by asteroza

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