asteroza + pressure   78

Quidnet Energy
Using shale reservoirs as a pressure vessel of sorts to store high pressure water, sorta like CAES or pumped hydro
underground  shale  water  pressure  energy  storage 
june 2018 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
Electric Pressure Cooker, Smart Cooker, Multi Cooker, 快煲电压力锅
Combines the merits of slow cooking and pressure cooking, apparently pretty popular, somewhat programmable, and electric. Semi-portable as well.
electric  pressure  cooker  slow  cooking  pot  kitchen  tools  Delicious 
february 2017 by asteroza
Benkatina turbine
Pipe water turbine for pressure vaults where high pressure water mains are converted to lower pressure water lines for local distribution. By using the wasted pressure at that point, local power generation is possible.
variable  head  pressure  reduction  water  pipe  turbine  local  power  generator  Delicious 
november 2016 by asteroza
Launch Vehicle and Spacecraft System Design Using the Pistonless Pump - RocketPu...
Interesting pistonless pump design, using low pressure main tank, and two or more runtime tanks alternating between pressurizing and receiving fluids, all driven by a pressurant gas.
launch  vehicle  rocket  pistonless  runtime  pressure  pump  tank  propellant  Delicious 
august 2016 by asteroza
Solar photothermochemical alkane reverse combustion
So high light/pressure/temperature reactor with TiO2 catalyst does a one step conversion of water and CO2 to liquid hydrocarbons.
liquid  hydrocarbon  synfuel  production  photothermochemical  tandem  photochemical  thermochemical  photocatalytic  photocatalyst  alkane  reverse  combustion  UV  light  heat  pressure  titanium  dioxoide  catalyst  water  CO2  cracking  materials  science  research  technology  solar  synthetic  fuel  Delicious 
february 2016 by asteroza
Interesting use of a linear piston motion of a wave power buoy to drive a mechanically driven high pressure seawater pump for a reverse osmosis water desalination rig. RO requires high pressure, which typically requires a lot of electric power for a electric pump, but by using gradual pressure building using a wave driven seawater pump, you can achieve equivalent pressures. Potentially convenient for small island resorts that have very little electrical power. But the long water pipe is a bit of a problem. If it were me, I would use the wave buoy to send pressurized seawaater directly via pipe to a beach building with the RO rig and a pressure accumulator tank, since that keeps the more finicky parts out of the water.
wave  power  generator  buoy  high  pressure  reverse  osmosis  water  desalination  mechanical  pump  ocean  marine  engineering  seawater  Delicious 
december 2014 by asteroza
Recent Advances in Power Cycles Using Rotating Detonation Engines with Subcritical and Supercritical CO2
So rocketdyne has been doing interesting RDWE plasma assisted combustors, in this case intended for oxyfuel powerplants with CO2 capture
aerojet  rocketdyne  RDE  RWDE  PDE  rotating  wave  detonation  engine  pressure  rise  combustor  supercritical  CO2  combustion  cycle  oxyfuel  gas  turbine  research  technology  pulse  pulsed  plasma  assist  carbon  capture  Delicious 
november 2014 by asteroza
Scalable high-mobility MoS2 thin films fabricated by an atmospheric pressure chemical vapor deposition process at ambient temperature - Nanoscale (RSC Publishing)
New large area manufacturing technique for making MoS2 thin films in atom thick sheets, which makes it a potentially competitive alternative to graphene for similar strength and conductivity.
molybdenum  disulphide  thin  film  CVD  production  ambient  pressure  manufacturing  materials  science  research  technology  nanotechnology  Delicious 
september 2014 by asteroza
Color Change Technology
Possible use of thermochromic roofing tiles to reduce heat island effects and change thermal profiles of building roofs in summer/winter.
color  change  surface  coating  thermochromic  photochromic  pressure  water  sensitive  textile  materials  science  research  technology  ink  Delicious 
september 2014 by asteroza
Empa - MM-Dekubitus Bettlaken
Interesting new weave pattern results in a dot-matrix like effect, creating raised threads/contact points. Apparently this reduces overall contact, which is counter-intuitive considering for a pressure ulcer you theoretically would want to decrease, not increase contact pressure. This somehow improves comfort though and reduces pressure ulcer occurrence.
raised  surface  textile  bed  linen  research  technology  health  medicine  bedsore  pressure  ulcer  dot  matrix  thread  Delicious 
september 2014 by asteroza
Swellable, Water- and Acid-Tolerant Polymer Sponges for Chemoselective Carbon Dioxide Capture - Journal of the American Chemical Society (ACS Publications)
Interesting CO2 sponge that uses a physical swelling mechanism in it's pores to capture CO2 at high pressure while rejecting water, but releases at low pressure. So sorta pressure swing style adsorbent?
CO2  carbon  capture  polymer  sponge  high  pressure  materials  science  research  technology  organic  hydrophobic  swelling  expansion  selective  gas  adsorbent  Delicious 
august 2014 by asteroza
Marine two-phase jet propulsion and bubbly flows | Fine Rocket Propulsion Center
An underwater ramjet, but really kind of a jet pump/ejector ramjet? Substituting expansion of overcompressed air or a compressed liquid refrigerant (so pressure drop expansion or liquid to gas boiling expansion) injection for a conventional combustion chamber in a ramjet. If one gets enough momentum from the injection to to do a standing start, then it gets pretty simple for a ramjet. One of the patents from this seems to show a pod version and a long blade version, that uses 2D ramjets embedded in the blade. Ultimate, you need some sort of high pressure gas source, either compressed gas, liquid boiling into a gas, or a gas generator. I wonder if this can be mixed with a supercavitation drag reduction system like a skival torpedo, supercavitating the ramjet pod exterior from the same gas generator flow?
marine  ramjet  expansion  pressure  underwater  drop  pump  research  ejector  gas  propulsion  thruster  jet  Delicious 
september 2013 by asteroza
Welcome to Rentricity
Smart idea to recover energy lost in water pressure regulator vaults, which convert high pressure water mains to lower pressure water for neighborhood water pipes. Rather than a typical pressure regulator, this uses an inline water turbine to extract energy while reducing pressure. A very "hidden" distributed generation opportunity.
kinetic  hydrokinetic  green  generator  distributed  power  recovery  energy  alternative  replacement  regulator  pressure  line  water  Delicious 
november 2012 by asteroza
ESA Portal - Hypergravity helping aircraft fly further
Interesting use of high gravity centrifuges rather than high pressure press forges to cast advanced superalloys.
strength  lightweight  ESA  alloy  superalloy  aluminide  titanium  research  technology  metallurgy  science  materials  casting  metal  hypergravity  pressure  gravity  high  Delicious 
november 2012 by asteroza
Simulation 360 - Simulation & Cloud Computing Capabilities - Autodesk
Autodesk is now providing cloud engineering simulation services, so small engineering shops can do full sims quickly at a reasonable cost.
Autodesk  cloud  engineering  simulation  service  fluid  thermal  mechanical  stress  dynamic  load  cyclic  distribution  vibration  nonlinear  radiant  heat  pressure  drop  ventilation  engineering  Delicious 
september 2012 by asteroza
Chimera Energy
Apparently a "dry" fracking technique using no water, just gelled propane (WTF?!?). Interesting methodology...
gelled  propane  dry  well  fracking  technology  underground  facture  gas  pressure  hydraulic  Delicious 
august 2012 by asteroza
Apparently a commercial concrete mix for UHPC, suitable for high strength/high flexibility and certain repair situations. High environmental resistance properties such as salt water. Also can be used for bunkers, but governments get a little uppity about that...
defense  technology  research  science  materials  construction  france  premix  concrete  pressure  performance  high  ultra  UHPC  Ductal  Delicious 
march 2012 by asteroza
Parker Awarded Ohio Grant to Advance Wind Energy Technology, Parker Hannifin Corp.
Apparently a hydraulic transmission to move the power down from a wind turbine hub to the ground, to a ground mounted generator. This reduces weight aloft in theory, assuming you can accept the efficiency and thermal losses from the high pressure hydraulic line link between the hub and the ground. There is something very attractive about getting the electrical bits down to ground level, for maintenance purposes.
wind  turbine  high  pressure  hydraulic  remote  transmission  power  generator  green  energy  hardware  Delicious 
february 2012 by asteroza
One Per Cent: Green Machine: Storing wind power beneath the waves
This seems to be describing an underwater CAES setup, but I though the original concept was actually a pumped hydro based concept. Basically, a strong in compression concrete sphere has a positive displacement pump/generator placed on it, and pumps water out of the sphere at depth. This emulates a pumped hydro dam/lake/reservoir but with a huge hydraulic head. With a deep underwater CAES setup, you run the risk of the sphere becoming buoyant, which kinda defeats the secondary purpose of being an offshore floating wind turbine platform's anchor. Maybe it isn't actually CAES but a simple pressure regulation system to maintain minimum pressure to prevent excess vapor formation (and the risk of ice accumulation)?
CAES  ORES  ocean  offshore  renewable  energy  storage  concrete  sphere  pressure  differential  pumped  hydroelectric  power  generator  green  energy  grid  hydraulic  Delicious 
december 2011 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
New green technology for hydrogen production
Claims lower temperature hydrogen gas production via sorption bed enhanced methane reformer, which sucks in CO2 while reforming so the output gas stream is high purity hydrogen. I wonder how you get the CO2 back out of the sorbent to recycle it though...
sorption  bed  enhanced  catalytic  methane  reformer  hydrogen  gas  production  carbon  capture  CO2  rhodium  catalyst  hydrotalcite  sorbent  low  temperature  pressure  Delicious 
june 2011 by asteroza
DXV Water Technologies: Products
Basically these guys propose a long vertical tube in the sea, with a membrane over the low end. At the right depth, you get the necessary pressure. The problem is the pressure though, since the freshwater will fill the tube, increasing pressure on the output side of the membrane. You are then forced to pump from the bottom, which means you are similar (but less?) in energy expenditure to conventional pressure reverse osmosis.
high  pressure  seawater  reverse  osmosis  freshwater  water  production  tube  Delicious 
february 2011 by asteroza
Synthetic fuels research aims to reduce oil dependence
Interesting if they have solved some of the issues of a high pressure coal feeder...
high  pressure  steam  hydrogen  feeder  coal  gasifier  materials  science  research  technology  biofuel  synthetic  liquid  fuel  production  CTL  Delicious 
september 2010 by asteroza
ttengines - clean air turbine technology
So, um, I think this is basically multiple valveless pulsejets driving an impulse turbine, right? I suppose since it's valveless, there are pressure and shock wave related reasons why you may not want higher pressures in the combustion chamber. Also, you can't use a downstream turbocharger since that would increase backpressure of the main turbine, so the blower must be powered by the main turbine (mechanically or electrically driven?)
pressure  gain  compressor  cyclic  detonation  cycle  gas  turbine  engine  powerplant  propulsion  motor  transportation  green  energy  DCGT  Delicious 
may 2010 by asteroza
Wave Disc Engines
Using a pressure wave as a substitute for a physical blade/rotor (I imagine up to using supersonic waves) to transfer energy in a high efficiency motor.
wave  disc  engine  generator  research  technology  pressure  alternative  motor  WDG  WDE  disk  power  valveless  rotary  pulsejet  shockwave  detonation  gas  turbine  exchange  rotor  Delicious 
november 2009 by asteroza
Hydraulic series hybrid with regenerative braking via the pressure accumulator, as an alternative to electric series hybrid vehicle systems. Applications for wind turbines as a replacement transmission (though what about remote transmissions to put the generator on the ground to reduce weight aloft?)
technology  wind  green  turbine  energy  alternative  pump  transportation  transmission  vehicle  pressure  motor  hybrid  car  digital  displacement  hydraulic  Artemis  japan  MHI  Delicious 
march 2009 by asteroza

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