asteroza + oxygen   48

Coming Soon
Uses a closed loop ICE of sorts, using input hydrogen/methane and oxygen along with working fluid argon. Burn in a piston, condense out the water, membrane filter the CO2, and recycle the argon back to the cylinder.
argon  power  cycle  alternative  working  fluid  closed  loop  recycling  ICE  engine  generator  hydrogen  methane  oxygen  oxyfuel 
october 2018 by asteroza
A comparison of the antifouling performance of air plasma spray (APS) ceramic and high velocity oxygen fuel (HVOF) coatings for use in marine hydraulic applications: Biofouling: Vol 34, No 5
Still kinda expensive to do a whole ship hull, but this basically uses a supersonic flamethrower to treat a metal surface with a carbide layer for biofouling protection, cuts fouling by 50% or more.
marine  materials  science  research  technology  carbide  surface  treatment  antifouling  coating  high  velocity  oxygen  fuel  plasma  spray 
october 2018 by asteroza
Rapid, Puncture-Initiated Healing via Oxygen-Mediated Polymerization - ACS Macro Letters (ACS Publications)
Hole filling polymer structure that reacts with oxygen may be suitable for spaceship hull breaches by space junk, provide the rapid polymerized plug doesn't get blown out by the vacuum pressure of space.
rapid  puncture  self  healing  polymerization  oxygen  polymer  reaction  materials  science  research  technology  space  armor  defense  Delicious 
august 2015 by asteroza
VERY LOW EARTH ORBIT PROPELLANT COLLECTION FEASIBILITY ASSESSMENT
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
HYDROS Propulsion System
New cubesat thruster, uses on-orbit on-demand electrolysis of water to provide oxygen/hydrogen for the thruster, so you have an inert propellant.
water  electrolysis  hydrogen  oxygen  rocket  thruster  cubesat  space  propulsion  hardware  electronics  devices  Delicious 
january 2014 by asteroza
Getting Started with odrive | odrive
Looks like the Oxygen cloud storage guys pivoted a little, and are now targeting a slightly more dropbox like experience. Looks like their cloud stack portion is a firewall puncher intermediary to allow direct file transfer, much in the manner of other NAT punching p2p systems like Skype.
oxygen  odrive  cloud  storage  service  file  sharing  private  Delicious 
january 2014 by asteroza
ATK PowerPoint Template - White Internal Use - 315856main_ATK_Uzhinsky.pdf
Interesting energy storage system cycle, using a SOFC fuelcell microturbine, hydrogen peroxide, magnesium hydride, and external solar power
space  power  generator  energy  storage  research  technology  SOFC  fuelcell  hydrogen  peroxidie  H2O2  MgH2  magnesium  hydride  steam  oxygen  microturbine  Delicious 
january 2014 by asteroza
Assisted-Launch Performance Analysis: Using Trajectory and Vehicle Optimization :: TU Delft Institutional Repository
Interesting analysis of SSTO launch assist in regards to sizing of an assisted SSTO, for a kerolox and hydrolox configuration. I wonder how mixed propulsion would fare thought (kerolox switching to hydrolox tripropellant)
hydrolox  kerolox  oxygen  hydrogen  kerosene  propulsion  space  research  assist  launch  SSTO  Delicious 
january 2013 by asteroza
Readdle
Appears to support webDAV remtoe data stores, including some services like Dropbox and OxygenCloud.
cloud  Oxygen  Dropbox  storage  remote  webDAV  editor  reader  PDF  software  app  iPad  Delicious 
december 2012 by asteroza
Intravenous Oxygen
Apparently a method for packaging oxygen in lipid based microcapsules small enough and deformable enough to pass through capillaries. This effectively provides oxygen to people who have reduced or no lung function, for apparently up to 30 minutes. A sudden half hour increase in the "Golden Hour" could change the face of emergency medicine. It could also be used by people in extreme or dangerous situations, such a firefighters, or deep sea divers. I wonder if it could also be classified as a transhumanism boost treatment? Could athletes be considered doping if they used this, as it might potentially supply more oxygen than one could reasonably intake through the lungs?
boost  human  intravenous  development  research  biology  medical  medicine  carrier  oxygen  microcapsule  lipid  Delicious 
august 2012 by asteroza
7. Experimental Proof of Concept for an Electrochemical Plasma Thruster nstp-pathfinder-project-list.pdf (application/pdf Object)
Interesting self sustaining plasma thruster that in principle generates the power needed for plasma acceleration without a powerful external power source. I guess you use a wirefeed to feed in the aluminum wire/rod at the thruster core? Consumes oxygen gas, aluminum wire, and helium buffer gas (how much?)
electrochemical  plasma  thruster  aluminum  oxide  oxygen  space  propulsion  research  technology  Delicious 
july 2012 by asteroza
Oxygen-separation membranes could aid in CO2 reduction - MIT News Office
Interesting possible combustor design for oxyfuel plants, where a combustor wrapped in this ceramic membrane does heat accelerated oxygen ion transport across the membrane from the air side to the combustor interior. How useful this is for regular oxygen separation is up for debate though, since this seems to want a direct heat source which would be difficult to arrange for a traditional ASU, thus pushing you to cryogenic air separation techniques. Hrm, I wonder if the flow rates and weight would be attractive to aircraft jet engine combustor applications, maybe extending up into a competitor for LACE?
ceramic  membrane  oxygen  ion  separation  separator  materials  science  research  technology  CCS  oxyfuel  combustor  design  Delicious 
may 2012 by asteroza
A Perovskite Oxide Optimized for Oxygen Evolution Catalysis from Molecular Orbital Principles
So getting oxygen out of water by electrolysis has traditionally been the limiting factor in performance. This new catalyst is apparently an order of magnitude better than the previous catalyst, but suffers from the same limitation, namely requiring an alkaline solution media to perform at its best. So perhaps not quite ready for primetime. However, apparently there are some integration possibilities with Dr. Nocera's artificial leaf project, which uses similar behavior catalysts.
perovskite  oxide  oxygen  evolution  catalyst  water  electrolysis  materials  science  research  technology  Delicious 
october 2011 by asteroza
co2.no - Oxy-MHD
"Topping Ready" oxyfuel topping cycle, which is an oxyfuel combustor integrated with a topping cycle MHD. The recent improvements in UV lasers ionizing oxidizer and fuel may make it possible to seed the MHD plasma without sacrificial seeds, but these guys make the argument that stoichiometric combustion of an oxyfuel setup gets hot enough for thermal plasma anyways, reducing (but not eliminating?) the need for seeding. But they seem to use water/steam injection in the combustor itself, ostensibly to keep it from melting (why not a reverse vortex combustor with oxygen in the outer vortex and fuel center injection?) and to provide the majority of the working fluid volume as steam for a conventional steam turbine, but the MHD variant will reduce the water injection in exchange for MHD power extraction causing cooling.
oxyfuel  stoichiometric  oxygen  combustor  MHD  topping  cycle  power  generator  natural  gas  methane  coal  gasificiation  syngas  IGCC  CC  Delicious 
july 2011 by asteroza
H2PS Home Page
Interesting thermal disassociation cracker, using a membrane and fast hydrogen diffusion to achieve higher efficiency in generating and processing hydrogen from the high temperature water cracker reactor.
solar  thermal  Water  dissociation  membrane  filter  separator  reactor  cracking  hydrogen  oxygen  production  green  energy  synthetic  fuel  Delicious 
december 2010 by asteroza
Energy Storage System Deals With Sudden Draws On The Grid
Interesting grid peak shaving technique suited to natural gas turbine plants. Use offpeak excess baseload to power an air separation plant to collect liquid nitrogen and (?liquid) oxygen. When the peak comes, boil the nitrogen using atmospheric heat and waste heat, then run through a (probably aeroderivative) simple expansion turbine. Additionally, the collected oxygen is used with natural gas in a conventional gas turbine in oxyfuel mode for clean emissions (and waste heat probably going through a steam generator, and possibly the nitrogen turbine exhaust being used on the steam generator condenser?). They claim good efficiency, probably since the liquid oxygen boiling would provide the needed pressure for the combustor without a conventional compressor (or if push comes to shove, use the nitrogen turbine to precompress the gaseous oxygen), and the energy density may not be shabby overall. Interesting twist to the cold (well, more like a heatsink) thermal energy storage trick.
green  grid  energy  storage  peak  shaving  offpeak  ASU  liquid  nitrogen  oxygen  natural  gas  methane  turbine  oxyfuel  combined  cycle  low  emissions  cold  temperature  cryogenic  heat  thermal  heatsink  Delicious 
august 2010 by asteroza
Panasonic: Oxygen-rich Water Encourages Growth of Plants -- Tech-On!
Hrm, I wonder if this could be used out in the field by having an inline aerator microbubbler near the nozzles of agricultural watering equipment? Much easier to implement in hydroponic systems though. Actually, I wonder if you could make an oxygen and carbon dioxide rich water stream for hydroponics, and if that has merit?
agriculture  biology  research  oxygen  rich  water  panasonic  hydroponics  microbubble  bubble  aeration  Delicious 
april 2010 by asteroza
Consecutive Thermal H2 and Light-Induced O2 Evolution from Water Promoted by a Metal Complex -- Kohl et al. 324 (5923): 74 -- Science
Okay, if this pans out, this could be huge. An artificial photosynthesis engine to produce hydrogen and oxygen, via a ruthenium metal complex. It's not clear if the hydrogen and oxygen liberation steps must be distinct. Could do a vertical torus pressure vessel half filled with cool water and a rotating catalyst bed ring, moving through pressure seals to separate the upper and lower halfs of the torus. Blast a quarter ring of the exposed exposed upper catalyst with hot water/steam to get a mixed steam/H2 stream, then blast the the other exposed quarter with the light to get O2, that by simple condensation of the stream will yield your hydrogen and oxygen. Dip the catalyst ring back into the cool water to regenerate the catalyst. I suppose there might be some chamber partitioning tricks to keep the oxygen and hydrogen separate.
artificial  photosynthesis  electrolysis  gas  separation  hydrogen  oxygen  water  ruthenium  metal  complex  catalyst  materials  science  research  chemical  process  engineering  thermal  H2  O2  evolution  Delicious 
april 2009 by asteroza
A Promising Catalyst for Solar-Based Hydrogen Energy Production
I wonder if a small electric charge in the water could substitute for the reagent electron donor that otherwise contaminates the water...
technology  green  energy  power  materials  research  Water  oxygen  carbon  solar  production  hydrogen  electrolysis  polymer  mat  splitting  layered  nitride  Delicious 
february 2009 by asteroza

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