asteroza + energy + marine   138

Nuclear Propulsion Along Inland Waterways
This is actually an argument in favor of mobile thermal batteries with their heat engines, and a recharging infrastructure (which preferably uses small nuclear heat sources). Fireless steam locomotives are still in use in select industries that use a large steam vessel recharged by an external steam source, but newer thermal batteries could improve on things.
mobile  thermal  battery  energy  storage  marine  propulsion  steam  engine  SMR  nuclear  reactor  heat  source 
10 weeks ago by asteroza
CalWave | Converting Waves into Electricity and Freshwater
Some sort of "wave carpet" planar absorber located below waves, emulating the damping ability of muddy sea bottoms.
wave  carpet  energy  converter  absorber  power  generator  marine  offshore  research  technology 
october 2018 by asteroza
Accio Energy
Uh, so releasing charged droplets from a wind permiated panel somehow generates large DC voltage differentials that can be harvested for power.
electrohydrodynamic  power  generator  ARPA-E  charged  mist  DC  green  energy  permiable  membrane  wind  offshore  buoy  marine  engineering  ocean  floating  Delicious 
december 2016 by asteroza
Wave Energy :: ALBATERN :: WaveNET
Interesting wave energy power generator design, using linkable modules. Similar to pelamis, but all the hydraulic piston stuff is done underwater it seems.
waveNET  modular  pneumatic  pump  wave  motion  power  generator  marine  renewable  green  energy  research  technology  array  hydraulic  structure  ocean  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
Floating nuclear plants could ride out tsunamis
Rather than a spar buoy style, why not a FPSO hull and colocate a synfuel production facility using that new US Navy system?
offshore  spare  buoy  nuclear  reactor  power  generator  marine  structure  energy  floating  barge  design  concept  Delicious 
april 2014 by asteroza
2012-Proc.-R.-Soc.-A-Alam-3153-71.pdf
Interesting possible trick to increasing wave energy collection via increasing collector area
wave  energy  converter  WEC  carpet  wide  area  collector  fabric  deformable  plate  transducer  power  generator  ocean  marine  research  technology  Delicious 
february 2014 by asteroza
IEEE Xplore - Ocean Renewable Energy Storage (ORES) System: Analysis of an Undersea Energy Storage Concept
Hollow concrete sphere anchors for floating wind turbines do double duty, anchor the turbine, and serving as an energy storage subsystem by pumping water out of the sphere at depth. 30m sphere stores roughly 6MWhr, sweet spot is 750m depth, economically viable at 400m, works at 200m in a pinch, 1500m is pushing it (stress fracture implosion of the vapor head inside would be fierce).
marine  shell  structure  pumped  hardware  underwater  undersea  sphere  ocean  hydro  concrete  anchor  suction  energy  storage  Delicious 
may 2013 by asteroza
Carnegie Wave Energy
Nice part of this is that it basically is a submerged buoy actuated seawater pump, sending high pressure seawater ashore to a turbine station on land, keeping the electrical bits dry. Water pressure can be used directly for desalination as well.
CETO  wave  power  generator  green  energy  reciprocating  hydraulic  seawater  ocean  Water  pump  buoy  desalination  high  pressure  marine  structures  point  absorber  Delicious 
december 2011 by asteroza
Eco Marine Power - solar, electric, wind, hybrid marine power and propulsion
Some weird array type wind sail for ships, covered with solar cells. But not wing sails it seems. More like a retro solid sail squarerigger schooner.
solid  rigid  sail  solar  panel  array  wind  power  generator  green  energy  marine  auxiliary  propulsion  hardware  electronics  devices  ship  vessel  technologies  technology  Delicious 
september 2011 by asteroza
20110912_presentation_e.pdf (application/pdf Object)
So Son's saying what a lot of people have been talking about for a long time now, but he makes for a good spokesman. 4GW offshore HVDC supergrid intertie in the sea of japan, pan-asia links similar to DESERTEC, independent ISO/TSO to break the stranghold of regional oligopolies in japan and have fair feed-in tariff structures without wasted energy. No calls for grid energy storage though, though if a true supergrid is operating, it can be reduced or eliminated if the timezone spread is far enough. Also trotting out the national energy security horse too.
JREF  japan  energy  policy  pan-asia  asia  supergrid  grid  offshore  power  transmission  network  green  peak  shift  load  balance  independent  system  operator  ISO  TSO  cable  HVDC  marine  ocean  subsea  submarine  intertie  interconnector  national  infrastructure  security  independence  resource  Delicious 
september 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
electric outboard motors aquawatt australia
30 Hp electric outboard motor. Makes all electric dinghy's a possibility.
aquawatt  electric  outboard  motor  marine  ocean  propulsion  transportation  technology  green  energy  Delicious 
april 2011 by asteroza
WhisperGenTM heat and power systems
Interesting quiet generator for smallish yachts. 800W, but near silent and has decent fuel efficiency, but a major aim is CHP applications, since it provides enough heat that you might be able to run an adsorption cooler for the refrigerator/freezer rather than an electric compressor, and the heat is also applicable for hot water and radiant heating, which is nice in colder climates.
WhisperGen  marine  stirling  power  generator  CHP  propulsion  diesel  green  energy  quiet  low  sound  Delicious 
april 2011 by asteroza
Nenuphar :: Home
Ah, so they do use a floater/semisubmersible multipost design, not a spar buoy configuration. Which makes the most sense for a wide beam VAWT to protect against tilting.
Nenuphar  Vertiwind  offshore  VAWT  wind  turbine  power  generator  green  energy  marine  ocean  platform  structure  EU  europe  france  Delicious 
february 2011 by asteroza
Technip launches Vertiwind floating wind turbine project | Technip
Vertiwind aims to cut costs by using a low center of gravity VAWT, which in theory cuts down on the structure and mass of the buoy/floating structure to support the wind turbine. If you are forced to have semisubmersible styled platform to support a wind turbine, the beam of a VAWT can be reasonably compensated by the platform beam already. If it was supposed to be a spar buoy platform, you may be forced to position the VAWT higher to counteract motion to keep the sweep radius of the blades above wave height when tilted.
Technip  Vertiwind  VAWT  ocean  marine  offshore  floating  structure  platform  vertical  axis  wind  turbine  power  generator  green  energy  Delicious 
february 2011 by asteroza
Innovative Flexblue concept: DCNS and partners AREVA, CEA and EDF to conduct validation study | DCNS
Basically a not very mobile nuclear submarine that exports power. Coolant is free, subsea power transfer cable isn't.
Flexblue  DCNS  AREVA  EDF  underwater  submarine  nuclear  reactor  SMR  power  generator  green  energy  offshore  structure  marine  ocean  Delicious 
january 2011 by asteroza
Solaris Synergy Unveils Floating Photovoltaic Panels | Inhabitat - Green Design Will Save the World
Hrm. Conceptually interesting, but CPV tracking needs brings on additional issues such as platform stability.
Solaris  ocean  marine  offshore  platform  CPV  concentrating  PV  solar  cell  power  generator  green  energy  israel  Delicious 
november 2010 by asteroza
press-Lloyds.pdf (application/pdf Object)
Lloyd's and Hyperion Power Systems are teaming up to do dev work regarding modern shipping using small modular nuclear reactors as powerplants/engines/steam generators for large ships with a defined high speed need. There was some interesting work recently that a three ship fleet with nuclear power for the transpacific container cargo transport market could seriously beat a 4 ship fuel oil powered fleet on a profit and tons/day or tons/mile basis.
Lloyds  Hyperion  small  form  factor  modular  reactor  SMR  steam  power  generator  powerplant  engine  ship  vessel  propulsion  green  energy  transportation  shipping  building  marine  ocean  offshore  filetype:pdf  media:document  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
The Motorship - MHI develops hybrid turbocharger
Hrm, as a general rule, is running a direct drive or belt drive alternator better or worse than using an alternator generator colocated on the turbocharger shaft? I suppose a marine diesel has power enough to spare to get away with it, but what about cars and trucks? There was that hybrid turbocharger for cars a little while back, but that was to get over turbo boost lag, and wasn't intended to be a primary power generator alternator...
ship  marine  diesel  powerplant  motor  engine  technology  MHI  hybrid  turbocharger  power  generator  green  transportation  energy  Delicious 
october 2010 by asteroza
GREEN MOTION: electric, fossil free, marine drive, and propulsion system
Basically a motor/generator electric prop drive. On a multihull, you can potentially sail fast enough to generate a fair amount of power (3KW recovered at 8 knots from a 10KW rated drive). Coupled with a diesel generator, good batteries, and solar panels, you can go almost fuel free.
green  motion  ocean  marine  yacht  motor  drag  generator  energy  recovery  hardware  electronics  devices  power  electric  propulsion  drive  Delicious 
august 2010 by asteroza
Principle Power, Inc. - Renewable Energy, Delivered.
MIT WindFloat design is a tension leg offshore wind turbine platform
WindFloat  offshore  ocean  marine  tension  leg  support  platform  structure  wind  turbine  power  generator  green  energy  MIT  Delicious 
july 2010 by asteroza
asahi.com(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
海流発電のNOVA ENERGY
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
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