asteroza + collector   71

Team JMCC WING -Water Abundance XPRIZE Competition | Indiegogo
Some sort of low eight high torque wind turbine using fabric blades (and fabric duct), seems to use a pole/wire tensegrity structure
tensegrity  structure  high  torque  wind  turbine  power  generator  fabric  blade  atmospheric  water  fog  collector 
october 2018 by asteroza
GPO batch to run autoruns collector, collate into a CSV for later checks
windows  autoruns  collector  batch  script  sysadmin  tips  tricks  security  defense  GPO 
july 2018 by asteroza
C4: the continuously concurrent compacting collector - c4_paper_acm.pdf
Lock free high performance low latency GC, currently used in the Zing java JVM by bankers. Requires 100x page remapping performance compared to page allocation, but they are achieving something like 700TB/s remapping so they are doing pretty good.
algorithm  research  software  C4  low  latency  garbage  collector  concurrent  high  performance  collection  programming  development  lockfree  Delicious 
july 2016 by asteroza
Microsoft Word - IEPC-2007-162.doc - IEPC-2007-162.pdf
Validation of the generic case of an atmosphere skimming orbital cruiser in very low orbit (SSO) using hall effect thrusters. Not quite PROFAC, but a good starting point.
low  altitude  orbit  LEO  ramscoop  ramdiver  satellite  design  space  propulsion  research  hall  effect  electric  thruster  atmosphere  scoop  collector  inlet  hypersonic  PROFAC  Delicious 
october 2015 by asteroza
Updated parametric study of orbital fuel depot atmospheric gas collector designs, notably PROFAC. Some of the study decisions I take issue with, but the results are useful. Generally, unless serious tricks are involved, particularly power density, air scoopers aren't happening. Good match for beamed power applications, and there might be room for tethered scoop trawler designs that get more of the power system mass in lower drag higher orbits.
PROFAC  orbital  propellant  fuel  air  nitrogen  oxygen  collection  collector  scooper  scoop  space  technology  research  atmosphere  atmospheric  ramscoop  ramdiver  depot  orbit  Delicious 
january 2015 by asteroza
Netflix uses Scumblr to crawl for useful info to feed to people (basically scraping for potentially useful security info)
netflix  opensource  software  internet  information  search  engine  crawler  collector  webapp  security  Delicious 
august 2014 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
Light Harvesting: Near-Infrared Harvesting Transparent Luminescent Solar Concentrators (Advanced Optical Materials 7/2014) - Zhao - 2014 - Advanced Optical Materials - Wiley Online Library
So collects and redirects NIR to the pane edge,where it can be converted to other wavelengths (regular IR) for a solar power generator to consume. Does near infrared now, seems possible to also to UV as well.
transparent  luminescent  edge  concentrator  solar  collector  optics  materials  science  research  technology  near  infrared  NIR  IR  organic  molecule  Delicious 
august 2014 by asteroza
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
Black Sun Planetary Solutions
Interesting collector design, based on on a blackbody cavity concept. Reduces costs since it doesn't use a vacuum tube receiver core, along with a low precision tolerant mirror reflector geometry. Seems to still require single axis tracking though, but 10 degrees is a lot easier to implement via ratchet mechanisms rather than continuous jackscrews.
CSP  concentrating  solar  thermal  power  generator  blackbody  cavity  parabolic  reflector  collector  design  green  energy  funnel  CPV  Delicious 
december 2013 by asteroza
Nanoscale Triboelectric-Effect-Enabled Energy Conversion for Sustainably Powering Portable Electronics - Nano Letters (ACS Publications)
Basically, this is a squeezing based power generator, on the small scale (nanogenerator). Possibly very well adapted to immediate connection with nearby/embedded capacitors to collect energy as a first stage, before transferring to long term larger storage.
scavenger  electricity  static  nanotechnology  technology  research  science  materials  collector  harvester  energy  kinetic  generator  power  triboelectric  Delicious 
november 2012 by asteroza
Perpetual motion: A piezoelectric pacemaker that is powered by your heartbeat | ExtremeTech
Wow, that's actually pretty smart, if the local energy generation and storage for the periodic stimulus firing is sufficient and it isn't a large device to stuff into someones chest. Also much simpler and potentially more failsafe than say a blood sugar powered fuel cell.
batteryless  integration  technology  research  hardware  electronics  devices  medical  medicine  health  heart  body  pacemaker  powered  human  collector  generator  power  harvestor  energy  kinetic  piezoelectric  Delicious 
november 2012 by asteroza
IEEE_AerospaceConference_PHARO_2010.pdf (application/pdf Object)
PHARO paper showing a diffuser collector inlet, much like more conventional ramjets, is better for hypersonic reasons.
PROFAC  PHARO  ramdiver  ramscoop  air  airscoop  scoop  atmospheric  propellant  fuel  collector  ISRU  space  transportation  infrastructure  research  Delicious 
november 2011 by asteroza
Harvesting_Gases_in_LEO_to_Propel_Spacecraft.pdf (application/pdf Object)
Wow, Sterge Demetriades really got shafted for his work on PROFAC. I wonder what those other 3 ARS/AIAA papers look like? FOIA request to declassify them perhaps? Lots of other interesting tidbits in this PDF. Using the LOXLEO collector materials concept as a capture liner on a more conventional PROFAC cone nozzle input for the MHD ramjet might be the trick to doing this right.
PROFAC  PHARO  ramdiver  ramscoop  air  airscoop  scoop  atmospheric  propellant  fuel  collector  ISRU  space  technology  transportation  infrastructure  research  Delicious 
november 2011 by asteroza
Harvesting LOX in LEO.pdf (application/pdf Object)
Patented by Paul Klinkman? Claims of a patent application with 34 claims, but nothing showing up in google patents though. Electrodynamic tether boosted collector, 50Km tether needs 60N thrust mounted trailing up only, 325km collector altitude, 30m mouth. Focused on oxygen collection though (altitude where oxygen is about 85% dominant).
LOXLEO  PROFAC  PHARO  ramscoop  ramdiver  air  airscoop  scoop  atmospheric  propellant  fuel  collector  ISRU  space  transportation  infrastructure  technology  research  LOX  LEO  Delicious 
november 2011 by asteroza
Scooping atmospheric air (PROFAC revisited)
Hrm, PHARO variant resembling a ramscoop connected to a solar array kite joined together via an electrodynamic tether, to possibly eliminate the MHD ramjet for propulsion and increase solar array size? It would also keep the large solar array out of the high drag regime. You could even go for an inflatable solar array. Though vehicle dynamics gets ugly, and now you are dragging around two and half objects through crowded airspace.
PROFAC  PHARO  atmospheric  air  propellant  collector  fuel  electrodynamic  tether  propulsion  space  transportation  infrastructure  technology  ramdiver  airscoop  scoop  ramscoop  ISRU  Delicious 
november 2011 by asteroza
GaTech-and-University-of-VA-graduate-(2).pdf.aspx (application/pdf Object)
PHARO is the electric version of the PROFAC ramscoop atmospheric propellant collector/diver, using concentrated reflected light from SPS' dumping on a passive cooled solar cell array at (?5x-50x?) solar intensity for roughly 175KW to power an MHD ramjet thruster running on collected liquid air/nitrogen. Quick and sleazy mods I can think of are using ground based laser beamed power (rather than simple SPS reflected concentrated solar), inflatable frustum collector nozzle expansion, and perhaps a VASIMR engine (though the MHD ramjet in principle is similar to a VASIMR, with fuel coming live from the collector).
PROFAC  orbital  propellant  fluid  accumulator  collector  ramscoop  ramdiver  atmosphere  diver  solar  electric  tug  PHARO  space  transportation  vehicle  spacecraft  air  scoop  airscoop  MHD  ramjet  fuel  ISRU  Delicious 
november 2011 by asteroza
Rocket science :: PROFAC
PROFAC is the nuclear thermal atmospheric propellant ramdiver, PHARO is the electric MHD engine version (ostensibly powered by 5x concentrated solar power beamed from an SPS constellation). It actually makes sense, especially if you have an offboard power source (PHARO was looking at a 200KW range power receiver). Easy mod is an inflatable frustum over the collector cone to increase the size of the of the capture inlet.
PROFAC  orbital  propellant  fluid  accumulator  collector  ramscoop  ramdiver  atmosphere  diver  nuclear  thermal  tug  PHARO  space  transportation  vehicle  spacecraft  airscoop  air  scoop  fuel  ISRU  Delicious 
november 2011 by asteroza
Researchers Unveil Innovative Solar Cooling Project | University of California, Merced
Weird stationary non-tracking parabolic concentrating collector for solar thermal applications, primary a solar absorption chiller.
XCPC  external  compund  parabolic  collector  stationary  solar  thermal  concentrator  absorption  chiller  refridgerator  air  conditioner  research  green  energy  power  generator  Delicious 
october 2011 by asteroza
CSP Home - StratoSolar
This is so crazy it MIGHT work. But due to the physics properties of the lightpipe (particularly the number of allowable bounces), you are pretty much committed to the 163m diameter lightpipe for the 20Km altitude. So that means your initial prototype likely has to be at least 1GW. There's also the catenary bend issues of the lightpipe tether to deal with due to winds aloft. One could make the argument that if you are committing to such a huge vertical pipe, you could just as easily commit to a solar updraft tower using a buoyant chimney.
StratoSolar  stratospheric  balloon  dirigible  aerostat  buoyant  solar  concentrator  collector  light  pipe  lightpipe  tether  CSP  thermal  power  generator  green  energy  Delicious 
june 2011 by asteroza
Brayton Energy - Research and Development in Alternative Energies - Hampton, NH - 603-601-0450
Split cycle solar thermal brayton air turbine setup, using grid surplus power at night to store compressed air, and during the day running that air through a solar concentrator dish heat exchanger powered air turbine (with exhaust recuperator to warm the cool air being released from the night storage)
solar  thermal  brayton  cycle  air  turbine  dish  collector  split  compression  expansion  power  generator  green  energy  SolarCAT  turbogenerator  compressed  Delicious 
june 2011 by asteroza
StratoSolar - Home
Crazy idea for a giant floating PV array. See also the related idea for a crazy giant CSP solar thermal concentrating lens balloon with lightpipe tether.
StratoSolar  stratospheric  balloon  dirigible  aerostat  buoyant  solar  collector  PV  tether  thethered  power  generator  green  energy  concentrator  CSP  Delicious 
february 2011 by asteroza
Why Solar Power
Some kind of hybrid setup, using CPV with gaseous coolant driving a gas turbine, with waste heat from the turbine finally recovered in a water heater like a microturbine CHP rig.
Kalahari  tribrid  tri-brid  hybrid  CPV  concentrating  PV  solar  thermal  collector  reflector  CHP  heat  storage  turbine  power  generator  Delicious 
december 2010 by asteroza
Enel Inaugerates Molten Salt Thermal Energy Storage System for Archimede Solar Thermal Power Plant « Solar Thermal Magazine
Apparently this is a parabolic trough type solar thermal plant with molten salt in the collector tubes, which is a first apparently. I wonder how they keep the salt from freezing in the tubes at night? Do they drain it, or accept the losses associated with keeping it molten directly in the tube at night? They mention a combined cycle plant, so maybe they vampire heat from the plant to keep the salt hot?
molten  salt  heat  transfer  working  fluid  parabolic  trough  collector  CSP  concentrating  solar  thermal  power  generator  green  energy  Delicious 
july 2010 by asteroza
The WaterMill | Element Four
well, not that green, but if you have humid air, no easy clean water water source, but oodles of power, this would help
green  hardware  electronics  devices  Water  collector  vapor  fresh  WaterMill  dehumidifier  Delicious 
february 2009 by asteroza

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