asteroza + current   93

Scotrenewables Tidal Power Ltd, Orkney, the world leader in the development of floating tidal stream and run-of-river turbines.
Interesting tidal stream turbine power generator, using a long boat-like pontoon hull and a suspended forward facing rotor
tidal  current  stream  water  turbine  power  generator  scotland  EU  europe 
august 2018 by asteroza
Miniature switch-mode power transformers
Zaptec apparently developed a high power, high current transformer that is super compact for running a plasma channel drill.
ESA  Zaptec  switching  mode  transformer  high  power  current  electropulse  plasma  channel  drill  hardware  electronics  devices  research  technology  drillbit  space  mining  drilling  Delicious 
march 2015 by asteroza
Interesting floating river current paddlewheel based water irrigation pump. Seems to be all mechanical too.
river  stream  current  mechanical  irrigation  water  pump  floating  Delicious 
november 2014 by asteroza
silent, invisible, predictable, renewable energy - tidal technology - openhydro
Didn't know DCNS got involved with these guys. DCNS seems to be pretty active in ocean energy work, what with their submarine nuclear powerplant and OTEC work...
DCNS  tidal  current  open  core  hub  rotor  turbine  power  generator  marine  structure  engineering  green  energy  hardware  electronics  devices  underwater  Delicious 
september 2014 by asteroza
Crowdfunding Renewable Energy - Ocean Energy Turbine
Odd VAWT using feathering/oscillating blades, as a water current turbine.
venetian  blind  ocean  river  tidal  current  water  turbine  power  generator  oscillating  blade  feathering  VAWT  vertical  green  energy  Delicious 
april 2014 by asteroza
Focus / Start Your Head with transcranial Direct Current Stimulation (tDCS)
Shocking your brain to work better, apparently. Which sorta works (applies to focus, learning, and working memory and possibly raising pain thresholds and non-dominant hand usability), but long term usage effects are still unknown. Also, it uses saline soaked sponges for the contacts to keep your skin from burning!
iPad  direct  app  cortex  hardware  tDCS  DC  learning  transcranial  electroshock  memory  shock  stimulation  software  iPhone  bluetooth  current  focus  devices  working  iOS  brain  electronics  prefrontal  Delicious 
august 2013 by asteroza
FILOSE : HomePage
Interesting biomimicry, using piezoelectric sensors emulating lateral lines to detect disturbed and smooth flow, allowing a robot trout to seek smooth current flows (or even calm eddy spaces behind objects), to reduce drag and propulsion power.
water  lateral  piezoelectric  smooth  underwater  drag  trout  line  EU  fin  flow  seeking  research  biomimicry  sensor  propulsion  current  robotics  reduction  FILOSE  Delicious 
march 2013 by asteroza
MODEC Develops Skwid Wind/tidal Hybrid Power Generation System -- Tech-On!
Weird 500KW hybrid wind/water turbine setup as an offshore buoy, possibly driving a common generator (but it must use gearing to have similar shaft speeds...)
demo  water  wind  hardware  buoy  turbine  offshore  green  darrieus  waterwheel  ocean  tidal  prototype  japan  skwid  current  power  generator  MODEC  hybrid  savonius  energy  windmill  Delicious 
march 2013 by asteroza
earth milk
Japanese company promoting a 250W river turbine, with an oddball diffuser duct, that locally accelerates the flow at the blades, and also has a weird flanged duct exit that causes local recirculation near the exit. I guess they are trying to re-energize the water flow near the exit and smooth he transition in the undisturbed river flow?
energy  green  devices  electronics  hardware  microhydroelectric  small  river  current  generator  power  turbine  water  hydrokinetic  ibasei  japan  Delicious 
december 2012 by asteroza
New Wireless Power Transmission Method Improves Efficiency of Entire System -- Tech-On!
Using some sort of high speed switching of DC, they avoid inverter/rectifier losses otherwise incurred by wireless power transmission systems that rely on AC transmission methods, when connected to end user devices that normally use DC current, such as most consumer electronics.
technology  research  physics  japan  transmission  power  wireless  resonance  current  direct  DC  Delicious 
december 2012 by asteroza
RIKEN | Press Release | 2012 | A New Route to Dissipationless Electronics
Interesting work on a actual magnetic topological insulator. In theory this should allow reductions in line transmission losses. But this needs magnetic materials, and currently requires cryogenic cooling, so on the face of it, it isn't much better than current high temperature superconductors. Might be more applicable to chip scale stuff, especially if they can get the working temperature up.
dirac  fermion  ferromagnetism  magnetic  topological  insulator  quantum  anomalous  hall  effect  materials  science  research  technology  power  transmission  energy  electricity  current  Delicious 
august 2012 by asteroza
Twin Creeks Technologies - Hyperion
Apparently these guys have a proton accelerator that operates at both high voltage and current, approximately 10x better than current proton accelerators (for what I assume are semiconductor applications...). Useful for making thin wafers for semiconductors, but the proton accelerator part is more interesting.
silicon  wafer  lamina  exfoliation  production  manufacturing  technology  research  high  current  voltage  energy  proton  accelerator  Delicious 
march 2012 by asteroza
Seadov Pty Ltd - sea water desalination renewable energy vessel
Crazy plan to desalinate water offshore in a tanker powered by renewable energy, and sell it to coastal cities in Australia. A mobile water plant, so if a city doesn't pay up, you can leave to go feed another market.
Australia  offshore  wind  current  water  turbine  power  generator  tanker  desalination  ship  vessel  Delicious 
july 2011 by asteroza
Ecomerit Technologies
Key point is some kind of distributed drivetrain setup, where you have large torque delivered via a huge wheel, and multiple takeoff/off-take drives drawing torque power off the big wheel. Each individual takeoff drive runs a generator of smaller size, so you don't have to deal with the expense of trying to build a larger monolithic unit, in theory.
Aquantis  C-Plane  marine  offshore  tidal  current  axial  flow  Water  turbine  power  generator  green  energy  distributed  drivetrain  transmission  takeoff  drive  high  torque  Delicious 
july 2011 by asteroza
LinkClick.aspx (application/pdf Object)
Using alumina particle solid media in a gas working fluid thermal energy storage setup with cyclical counter current heat exchangers. Sounds like the Isentropic Energy guys with their gravel heat store.
counter  current  cyclic  heat  exchanger  thermal  energy  storage  concept  alumina  particle  solid  media  gas  working  fluid  Delicious 
june 2011 by asteroza
Using network bandwidth graphing tools to illustrate recent TEPCO power consumption data
japan  earthquake  2011  TEPCO  current  power  consumption  graph  RRD  RRDtool  visualization  chart  Delicious 
april 2011 by asteroza
東京電力供給情報ウィジェット - Android Market
Basically it shows the current TEPCO consumption graph via that open TEPCI power API someone hacked together, which is terribly slow to update due to the raw data source's update frequency (gee, TEPCO having poor information/data transparency? surprise, surprise...)
android  app  software  TEPCO  API  current  power  consumption  widget  Delicious 
march 2011 by asteroza
Sumitomo Electric Develops Superconductive Cable With 50% More Efficiency - Bloomberg
1G HTS cable amperage improvement. I suppose that's good, but it's still first generation type HTS. I guess they have to get their investment back on the 1G production line before committing to more 2G HTS cable production.
Sumitomo  superconductor  cable  high  amperage  current  1G  HTS  temperature  Delicious 
september 2010 by asteroza朝日新聞社):First-ever tidal power generator nears start - English
Nova Energy has an interesting tuna shaped tidal current water turbine. It appears they are neutrally buoyant but probably can not free rotate on a long cable, and must be anchored to a tower
Nova  Energy  maguro  water  turbine  marine  ocean  river  tidal  current  power  generator  green  Delicious 
july 2010 by asteroza
Japanese startup with a pilot project for water current turbines, typically ocean tidal currents in straits and harbor mouths or other major currents. The individual turbines themselves are interesting, but since this seems to be dependent on a upstream pivot pole, I have doubts about the hydrodynamic efficiency due to vortex eddies off the pole/shaft/blade and it being a drag type turbine. I wonder if you could trail this off the Deep Green underwater kite tether near the end, to up the power output? Though would you need counter rotating blades to balance the torque?
Nova  energy  maguro  river  tidal  current  Water  turbine  power  generator  green  marine  ocean  offshore  japan  Delicious 
july 2010 by asteroza
Interesting idea of a gearless turbine (permanent magnet ring motor perhaps like those hubless tidal turbines?) mounted on a solid kite wing that is controlled to fly figure 8 racetrack patterns in an underwater current, such as a tidal current.. Interesting way to up the water speed through the turbine, but the guide and mooring cable/power takeoff will be a little obnoxious. I wonder if a KiteGen carousel system would be better suited to this scenario, as it centralizes the generator so the only difficult part is the kite control lines.
Minestro  DeepGreen  deep  green  underwater  kite  turbine  power  generator  energy  marine  coean  current  tidal  offshore  renewable  Saab  Delicious 
may 2010 by asteroza
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