asteroza + gas   246

Broomsat | COMPASS Team
This appears to effectively use gas puffing to push uncooperative spacecraft and dead sats to a graveyard orbit without grappling or docking. Helpful if the old sat is spinning.
orbital  debris  dead  satellite  management  gas  puff  push 
11 weeks ago by asteroza
Another helium gas cooled reactor, but with a traditional steam backend
pebble  bed  helium  coolant  gas  nuclear  reactor  power  generator  steam  HTGR 
march 2019 by asteroza
Concentrated Solar Photovoltaics provide both electricity and heat.
Last pic has a split hybrid CSP system, with visible spectrum PV with an IR reflector, feeding IR to a fiber line for use elsewhere in a high temp electrolysis cell.
hybrid  CSP  PV  thermal  IR  fiber  optic  transfer  power  generator  solar  high  temperature  electrolysis  hydrogen  gas  production  syngas  CO2  cracking 
march 2019 by asteroza
Joi Scientific: Clean, affordable hydrogen energy
Some sort of non-electrolysis based hydrogen production from seawater. New Brunswick Power in Canada is apparently partnering with them to produce hydrogen for energy storage (grid storage? peak shaving? renewable energy sink?)
hydrogen  gas  production  research  technology 
march 2019 by asteroza
Efficient CO2 Utilization via a Hybrid Na-CO2 System Based on CO2 Dissolution - ScienceDirect
Converts CO2 to hydrogen and baking soda via electrolytic cell and aqueous solution. Dependent on the aqueous solution though, where does that come from, how hard is it to regenerate, etc. Makes power too
CCS  CO2  carbon  capture  baking  soda  hydrogen  gas  production  power  generator  electrolytic  cell  sodium  ionic  conductor  NASICON  separator  membrane  chemistry 
february 2019 by asteroza
[1803.03111] Steam balloon concept for lifting rockets to launch altitude
So ground filled steam balloon might not suck at larger sizes, for rockoons?
steam  lift  gas  high  altitude  balloon  rocket  launch  rockoon  space  research  technology 
november 2018 by asteroza
CSIRO tech accelerates hydrogen vehicle future - CSIRO
New membrane for extracting hydrogen from ammonia, which allows a hydrogen logistics train where hydrogen is made/stored as ammonia, bulk transport is done as liquid ammonia, and converted back to hydrogen at a local fill station for local storage in a high pressure tank, for eventual use in fuel cell vehicles.
CSIRO  ammonia  hydrogen  gas  production  membrane  materials  science  research  technology  transportation  fuel  logistics  fuelcell 
august 2018 by asteroza
Noble-gas-infused neoprene closed-cell foams achieving ultra-low thermal conductivity fabrics - RSC Advances (RSC Publishing)
You can infuse a neoprene wetsuit with xenon/krypton via autoclave to displace nitrogen in the closed cell neoprene. While it will leak back out in day, if you move the infused wetsuit to a sealed bag, it will keep. Improves heat retention 3x.
materials  science  research  tehcnology  neoprene  wetsuit  noble  gas  infusion 
june 2018 by asteroza
Conceptual Design of an Air-Breathing Electric Thruster
Seems beehive-style inlets for air scooping at low orbital altitudes are in.
PROFAC  low  altitude  orbital  atmospheric  gas  scoop  ramscoop  inlet  design  aerodynamics  space  research 
april 2018 by asteroza
RotoLyzer | RotoBoost
Some kind of mechanism to rotate the electrodes in an electrolyzer to increase reaction rates? Or increase density gradient against the electrode to make gas separation easier/faster?
RotoLyzer  rotating  alkaline  water  electrolyzer  electrolysis  hydrogen  gas  production 
march 2018 by asteroza
Upgrading biogas produced at dairy farms into renewable natural gas by methanation - Walker - 2018 - International Journal of Energy Research - Wiley Online Library
So upgrading biogas from anerobic digestors working on manure to methane should be a net win, provided your hydrogen is sourced from renewable powered sources.
biogas  upgrade  methanation  methane  gas  biofuel  production  materials  science  research  technology 
march 2018 by asteroza
Hypersciences Inc. – Harnessing the Power of Extreme Velocity!
Using a gas gun for drilling. Air/diesel mix (so not a light gas gun) firing concrete projectiles at 2Km/s. I wonder if they use an ETC gun setup?
tunnel  tunneling  boring  mining  technology  gas  gun  concrete  projectile  research 
march 2018 by asteroza
Floating membraneless PV-electrolyzer based on buoyancy-driven product separation
Using asymmetrically catalyst coated mesh mebranes at small separation distances, vertically hanging mesh electrodes can perform electrolysis without a membrane and get good product separation, using natural gas buoyancy. Though this skews to tall rigs.
membraneless  asymetric  coated  electrode  mesh  water  electrolysis  electrolyzer  hydrogen  gas  production  materials  science  research  technology 
december 2017 by asteroza
Innovator Energy
Interesting CCS system, but I wonder how flue gas contaminants screw up the bubbler solvent chemistry
CCS  CO2  carbon  capture  ethanol  ammonium  bicarbonate  liquid  solvent  bubbler  flue  gas 
december 2017 by asteroza
GERA Technical Papers |
Nuclear piston engine, using gaseous "fuel" and hydrogen gas moderator, with neutron reflector piston and cylinder. Uses piston top-dead-center compression effects and a "spark" (external neutron source, like an ADSR particle accelerator neutron spallation target, or some sort of cylinder wall embedded neutron source). Wonder if LiquidPiston reverse wankel would also work well here. Negative void coefficient is nice too.
nuclear  nanofuel  internal  engine  piston  reciprocating  plutonium  hexaflouride  hydrogen  gas  otto  cycle  wankel  rotary  power  generator  external  neutron  source  spark  ignition  ADSR  gaseous  pulse  pulsed  core 
june 2017 by asteroza
Toyota Tests Hybrid Power Generation System Using Fuel Cell, Gas Turbine - News ...
cracked/reformed natural gas (CO, H2) fueling the SOFC/microturbine, but it sounds like they also use natural gas to boost the turbine?
japan  SOFC  fuelcell  natural  gas  turbine  microturbine  hybrid  power  generator  cogeneration  Delicious 
may 2017 by asteroza
Harvesting Hydrogen Gas from Air Pollutants with an Unbiased Gas Phase Photoelec...
Uses light, air, and organic pollutants to create hydrogen gas and clean the air apparently. Works better without oxygen, but does work with ambient air and light only.
photoelectrochemical  cell  titanium  oxide  photoanode  hydrogen  gas  production  light  solar  green  energy  air  pollution  synfuel  Delicious 
may 2017 by asteroza
Low cost plasma membrane reactor to efficiently convert ammonia to hydrogen
Using a plasma field between an iron tube and palladium foil tube, ammonia can be broken down to nitrogen and hydrogen, with the hydrogen pulled through the palladium foil efficiently, resulting in very high hydrogen gas purity separation. Process is low temperature and pressure as well, though the palladium foil probably isn't cheap. Effectively an ammonia fuel reformer for a hydrogen fuel cell, allowing storage of low pressure ammonia as fuel.
hydrogen  gas  production  ammonia  converter  plasma  palladium  membrane  reactor  materials  science  research  technology  separator  separation  reformer  fuelcell  low  temperature  pressure  Delicious 
april 2017 by asteroza
Supercritical Organic Rankine Cycle waste heate recovery generator for marine ga...
Interesting, for marine propulsion applications that use a gas turbine (selected for compactness/high power), exhaust gas waste energy recovery would be better served by a higher efficiency HRSG steam turbine, but the balance of plant of a steam turbine is so large that a supercritical organic rankine cycle, despite the lower efficiency, wins due to compactness pairing with the compact gas turbine.
supercritical  organic  rankine  cycle  power  generator  gas  turbine  exhaust  waste  heat  recovery  marine  Delicious 
november 2016 by asteroza
FHR with FIRES resistance heated firebrick thermal storage to provide peak heating on top of nuclear heating for an indirect fired gas turbine (well, maybe some makeup natural gas in there for direct heating) peaker plant collocated with the reactor.
MIT  FHR  nuclear  reactor  power  generator  NACC  combined  cycle  gas  turbine  peaker  thermal  energy  storage  FIRES  resistance  heating  heated  firebrick  heated  Delicious 
november 2016 by asteroza
Defining a performance map of porous carbon sorbents for high-pressure carbon di...
How best to tweak carbon filters for "sweetening" natural gas by removing CO2 from the feed. Though sour gas has other stuff like sulpher that is a different issue...
selective  carbon  sorbent  adsorber  CO2  materials  science  research  technology  gas  filtration  filter  Delicious 
august 2016 by asteroza
Oxyfuel methane turbine using a supercritical CO2 power turbine.
supercritical  CO2  turbine  SCO2  natural  gas  methane  oxyfuel  power  generator  Delicious 
april 2016 by asteroza
Techrules Media Site
Another one takes a stab at a turbine-PHEV, but no mention of a KERS though
gas  turbine  series  hybrid  EV  PHEV  car  supercar  automotive  research  technology  Delicious 
april 2016 by asteroza
DARPA Announces VTOL X-Plane Phase 2 Design
LightningStrike, a spiritual follow-on to Excalibur, though the embedded fan wing needs to be compared to LEAPtech/SCEPTOR/S2 in terms of efficiency as the fanwing might be a little overbuilt.
DARPA  hybrid  gas  turbine  electric  motor  turboelectric  distributed  propulsion  embedded  fan  wing  tiltwing  VTOL  aircraft  research  technology  aviation  airplane  UAV  Delicious 
march 2016 by asteroza
KIT - KIT - Media - Press Releases - PI 2015 - Crack it! Energy from a Fossil Fuel without carbon di-oxide
Hrm, I suppose if you had a handy methane source and a heat source (1200 C?!?), this is interesting (GenIV nuclear reactor maybe), but probably the more interesting aspect is the pure carbon powder byproduct, suitable for making carbon fiber and similar. I suppose if you wanted to make graphene, using natural gas from town as both an energy source and a carbon source for production might be a good match...
hydrogen  gas  production  research  technology  liquid  metal  tin  column  methane  cracking  carbon  powder  Delicious 
december 2015 by asteroza
Rocket Fuel Pump | Designed to Cost Effectively Eliminate Flight Failures
Interesting turbopump running on stored high pressure pump drive gas. Wonder how that trades against a hot steam tank with rocket nozzle boosted heating, or a Li-ion battery and an electric turbopump...
reciprocating  pistonless  compressed  gas  rocket  engine  fuel  pump  turbopump  hardware  space  propulsion  Delicious 
october 2015 by asteroza
Hybrid lasers for directed energy applications | SPIE Newsroom: SPIE
Hybrid approach, using solid state laser first stages pumping an inert rare gas second stage which deals with the combining.
optically  pumped  rare  gas  laser  hybrid  optics  physics  materials  science  research  technology  diode  excimer  Delicious 
june 2015 by asteroza
Solar News: Electric Turbo Arcjet
Assuming you had a tremendous amount of power, a turboarcjet does make some sense for high speed travel in the lower atmosphere. Subsonic would prefer electrically driven propellers though.
turboarcjet  electric  arcjet  heating  gas  turbine  propulsion  research  technology  aerospace  aviation  engine  Delicious 
may 2015 by asteroza
Filld – On-Demand Fuel Delivery
Er, is this whole cutting out the middle man silicon valley disruption streak starting to feel like it's jumping the shark a little? Plus the whole fixed location and unlocked gas cap issue is obnoxious for some. But, get Elon Musk's robotic snake arm recharger on a truck to "refuel" EV/PHEV's (with some API that allows you to one time authorize popping open the recharge port), and you might have something. A SuperCharger truck/AAA road rescue truck setup, though would you use a battery bank, a genset, or supercap bank, or flywheels?
gas  gasoline  fuel  delivery  service  Delicious 
may 2015 by asteroza
X-energy - Transformational Energy Solutions
New gas TRISO pebble bed group, tighter packing with online fuel swap, but less efficient than GA EM2 concept?
pebble  bed  TRISO  HTGR  high  temperature  gas  nuclear  reactor  research  technology  SMR  small  modular  Delicious  helium  cooled  fuel  power  generator 
may 2015 by asteroza
Fluoride Salt-Cooled High Temperature Reactor (FHR) Project | CANES
Don't like the pebble fuel, but this is probably a more achievable NACC configuration, as it isolates secondary loop better in case of primary loop leaks, compared to other proposed NACC systems, which use helium gas reactor, with a helium turbine within containment driving an external air compressor also in containment sucking in and then expelling external air through containment which isn't good (which I suppose that might be solvable with a shaft through the containment wall with frangible clutches).
NACC  PB-FHR-pebble  bed  salt  cooled  nuclear  reactor  combined  cycle  indirect  air  heating  gas  turbine  power  generator  research  technology  brayton  steam  bottoming  Delicious 
february 2015 by asteroza
Welcome To Flow – The Clever Energy Alternative
Uses a working fluid with a scroll expander turbine (for the generator) and post-expansion heat exchanger for hot water. So it's directly boiling the working fluid itself, which is closed loop. How that would compare to a fuelcell combustor microturbine generator with exhaust gas heat recovery to heat water for CHP is probably one of cost.
integrated  CHP  condensing  natural  gas  water  heater  power  generator  scroll  expander  turbine  microturbine  hardware  electronics  devices  Delicious 
february 2015 by asteroza
N2 gas is an effective fertilizer for bioethanol production by Zymomonas mobilis
Wow,um,so old data was wrong and new redone data says this bacteria can be fed pure nitrogen gas as fertilizer for cellulosic ethanol production, and it's awesome. Which basically means an oxygen gas separation plant's effuse of nitrogen and CO2 could be fed directly into the bacterium beds. Air Liquide must love this news...
biofuel  cellulosic  ethanol  production  biology  research  technology  nitrogen  gas  fertilizer  bacteria  feedstock  Delicious 
february 2015 by asteroza
ASME DC | Journal of Engineering for Gas Turbines and Power | Advances in the Development of a Microturbine Engine
A step towards a usable microturbine for powering electric UAV's as an alternative or complement to batteries, as an electric hybrid. But I bet a RamGen single rotor ISCE as a generator would beat this, if matched with Launchpoint's halbach array motor/generator...
DecaWatt  compact  small  form  factor  gas  turbine  microturbine  power  generator  research  technology  energy  UAV  drone  powerplant  electric  hybrid  Delicious 
january 2015 by asteroza
Catalytically active Au-O(OH)x- species stabilized by alkali ions on zeolites and mesoporous oxides
single atom gold particles supported by alkali ions seem to work pretty well as a active catalyst site for a water-gas shift reaction, making hydrogen production cheaper/easier
gold  water  gas  shift  reaction  catalyst  hydrogen  production  materials  science  chemistry  research  technology  Delicious 
january 2015 by asteroza
European Space Agency Awards €500k for New Cold Spray 3D Printing Technology
Interesting, using cold helium to increase the speed of sound of the neutral carrier gas for a metal powder spray, so it uses impact bonding rather than some kind of laser heating.
3D  printing  fabbing  manufacturing  technique  supersonic  titanium  particle  powder  cold  spray  coating  helium  carrier  gas  metal  Delicious 
january 2015 by asteroza
UniBio | Natural Gas Turned Into Food
Natural gas to proteins, using macrobiotic intermediary stage? Possible space food?
nautral  gas  methane  GTL  liquid  fermentation  bacteria  protein  production  food 
january 2015 by asteroza
Proton transport through one-atom-thick crystals : Nature : Nature Publishing Group
Interesting filtering trick, to sieve out cracked hydrogen ions. May be useful for fuelcell fuel production and avoiding fuel poisoning.
graphene  hydrogen  ion  sieve  filter  proton  transport  boron  nitride  materials  science  research  technology  nanotechnology  gas  production  Delicious 
january 2015 by asteroza
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