asteroza + pump   93

Numerical investigation of the convection heat transfer driven by airflows in underground tunnels - ScienceDirect
Using subway tunnels as the heat source in a ground source heat pump setup for district heating maybe. I suppose that's one solution to the London Underground overheating problem...
heating  cooling  HVAC  subway  tunnel  ground  source  heat  pump  district 
12 weeks ago by asteroza
Home ~ Celeroton AG - Ultra-high-speed electrical drive systems
Very high speed microturbines, with gas bearings. Also do microcompressors (centrifugal).
microturbine  microcompressor  turbien  compressor  research  technology  heat  pump 
april 2019 by asteroza
Turbo Compressors Enable Lighter Satellites ~ Celeroton AG - Ultra-high-speed electrical drive systems
better than 5kw/kg specific power heat pump using isopentane (roughly 10x better than normal). New compressor designs used in microturbine
microturbine  isopentane  heat  pump  turbine  research  technology  cooling  satellite  space 
april 2019 by asteroza
Seatricity | Wave Energy
A seawater pumping wave point absorber power generator
wave  power  generator  buoy  seawater  water  pump 
april 2019 by asteroza
Have an (artificial) heart | OHSU News
Artificial heart that use an oscillating linear piston design to reduce the parts count. Wonder how they prevent piston impacts at top/bottom dead center?
linear  free  piston  rod  pump  artificial  heart  medicine  health  research  technology 
march 2018 by asteroza
DP-12 Double Barrel Pump Shotgun - Standard Mfg. Co. LLC
so the reliability of a side-by-side, but the magazine capacity of a pump action.
double  barrel  pump  action  shotgun  gun  weapon  bullpup 
february 2018 by asteroza
IV-WALK | Alissa Rees
Trying to liberate patients from being chained to an IV pole by allowing them to take their drip bags with them on their body. But the pump aspect seems problematic. Maybe necessary evil for metered drips rather than gravity types? Maybe a hat like those beer hats, but for gravity IV drips?
health  medicine  portable  IV  drip  pump  vest 
december 2017 by asteroza
Skimmer Scanner - Android Apps on Google Play
Scan for common Bluetooth fuel pump skimmers that use default credentials...
fuel  pump  credit  card  skimmer  detection  Bluetooth  android  app  software  security  privacy 
september 2017 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
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
Ratcheting fluid with geometric anisotropy
Interesting pump configuration. Might be able to harvest waste vibration energy as a power source for small fluid flows.
ratchet  racheting  fluid  pump  geometry  sawtooth  biomimicry  physics  dynamics  hydrodynamics  research  technology  vibration  reciprocating  Delicious 
february 2015 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
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
Interesting floating river current paddlewheel based water irrigation pump. Seems to be all mechanical too.
river  stream  current  mechanical  irrigation  water  pump  floating  Delicious 
november 2014 by asteroza
AOE Accumulated Ocean Energy Inc - Creating a safe, clean energy for all on Earth.
Using a wave buoy based pump to compress air for a UWCAES setup. Problem is the heat loss (since it would be hard to recover), means you lose a lot of efficiency in the CAES system. I suppose they eat the loss, since the primary power source is renewable wave energy, rather than a grid input.
UWCAES  CAES  underwater  ocean  compressed  air  energy  storage  bag  balloon  green  wave  pump  buoy  Delicious 
september 2014 by asteroza
Turns out ocean surface layer humidity made this not work as a rain maker, but the interesting takeaway is the inductively charged electrospray method for generating fine water droplets. "The device consists of an anodized titanium spring half-embedded lengthwise in a rubber block, with the fluid passing through the spring so that the gaps between turns of the spring form spray nozzles. The diameter of these nozzles can be collectively adjusted by stretching the spring and its rubber matrix . Insulated conductors at high voltage run alongside the spring, and the droplets are thus charged by induction as they pass by the wires, resulting in a finer spray and better dispersion as well as making the droplets attract neutrally charged particles such as particulate pollution. The droplet size is also controlled by a ~1MHz ultrasonic input." This can be used for things like trying to capture airborne particulates in smoggy areas. By the "Salter's Duck" wave power generator dude too.
darrieus  turbine  water  pump  fine  spray  inductive  charged  droplet  electrospray  research  technology  Delicious 
january 2014 by asteroza
Microsoft Word - 3D74DD5F-0F88-71E2.doc - design.pdf
Seems to use somewhat low pressure steam being condensed at high flow rates to create a forced induction setup, so a kind of jet pump? In theory, a high speed flash boiler could use sea water to source the steam for the setup since at high enough speeds the boiler shouldn't cake up. I wonder if this could be chained with a marine ramjet downstream?
propulsion  marine  ramjet  underwater  induction  pump  research  jet  forced  steam  condensing  Delicious 
september 2013 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
daikinaltherma-brochure.pdf (application/pdf Object)
Getting closer to the ideal home energy management system, this using air sourced heat pumps boosted with solar thermal panels, driving a hot water heater as well as in floor heat transfer loops or traditional radiators, or heat exchangers for forced air HVAC. Now boost this with an HRV, integrated solar PV thermal panels providing heat and electricity, as well as an external fuel cell supplying heat and electricity, a cold thermal storage tank (nighttime ice generation) as a pair to the hot water tank, and a home electrical storage battery, and then you have something awesome.
Daikin  Altherma  solar  boost  air  source  heat  pump  water  heater  floor  heating  cooling  HVAC  thermal  storage  HEMS  Delicious 
august 2012 by asteroza
A ‘Magic Box’ For Your Passivhaus |
The Magic Box, AKA heavily integrated thermal compnents for homes such that heat/cold can be used/reused effectively, from HVAC to hot water heaters and boilers for in floor heating. Most of the focus here is heat recovery ventilators, which recover heat energy from hot exhaust air to preheat/heat the evaporator coil of a heat pump. Too bad hardly anyone is selling them.
Passivhaus  house  home  integrated  monolithic  hybrid  combined  energy  green  ventilator  recovery  chiller  adsoprtion  management  thermal  heater  water  pump  heat  HEMS  HVAC  HRV  box  magic  magicbox  Delicious 
august 2012 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
AMW - One Stroke for mankind
This is a pretty strange engine design. The problem point will probably be sealing between the blade "piston", the crankshaft disc slots holding the blade, and the duct walls. Which might be mitigated by keeping the ducts at most a half cylinder in depth where the blade dips out most from the crankshaft disc.
ducted  blade  rotary  engine  motor  positive  displacement  pump  ICE  Delicious 
august 2011 by asteroza
NASA - NASA is Making Hot, Way Cool
Using electric fields to pump liquid coolant through microchannels in a cold plate
NASA  research  EHD  electrohydrodynamic  thermal  electric  liquid  solid  state  heat  pump  cooling  technology  space  Delicious 
june 2011 by asteroza
Isentropic Ltd - Home
Using an air based fluid to pump heat in tanks full of gravel. Sort of an above ground CAES, but instead of miles of pipe storing high pressure air, you use the compressed (and hot) air to dump heat into a gravel tank. Reverse to get power back.
gravel  tank  container  heat  pump  energy  storage  green  grid  CAES  thermal  Delicious 
may 2011 by asteroza
Hurricane suppression system - Salter Sink
There is a shot of a two stroke system, where the wave action is both pumping warm surface water down and deep cold seawater up. The nutrient rich deep water replicates natural ocean upwelling currents/gradients, which greatly promote surface marine life. Naturally it also cools a slightly subsurface layer, so there are thermodynamic costs since it would sap heat out of the local surface water you are trying to force down.
Salter  Sink  wave  pump  ocean  sea  surface  temperature  weather  modification  hurricane  typhoon  monsoon  reduction  prevention  deep  upwelling  Delicious 
april 2011 by asteroza
The next generation of superconducting magnets are here....
It's kinda hard to call a superconducting magnet permanent. But this is an interesting technique for "charging" a superconducting magnet.
Magnifye  Fluxpump  superconductor  rare  earth  metal  permanent  magnet  superconducting  motor  materials  science  research  technology  heat  magnetic  flux  pump  travelling  wave  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
Geothermal Heat Pump Transfer Systems, Closed Loop Water Source Heat Pumps, Lake Loop Heat Pump Systems - Limnion By Heat-Line
A rather smartly designed compact heat exchanger for a lake loop cooler, bypassing the setup needs for a traditional lake loop cooling system and the vast mat of cooling pipes. I would worry about eventual biofouling, but perhaps the convection rate might be enough to deal with that.
Limnion  lake  loop  geothermal  heat  transfer  pump  home  house  building  cooling  HVAC  hardware  system  Delicious 
september 2010 by asteroza
Japanese firm patents cold water-pumping submarines to reduce strength of typhoons - The Mainichi Daily News
Just a wee bit this side of crank, since there is the rather significant problem of keeping said submarine at the desired depth...
japan  patent  ocean  cold  water  seawater  upwelling  pump  submarine  typhoon  countermeasures  weather  modification  geoengineering  terraforming  Delicious 
september 2010 by asteroza
Breakthrough in Energy Storage: Isentropic Energy : Greentech Media
Some kind of weird thermal energy store using compressed air and gravel in insulated containers. The idea seems to be using a reversible heatpump to force heat from one gravel store into the other. It seems potentially attractive because it's cheap-ish.
CAES  heat  pump  energy  storage  battery  Delicious 
march 2010 by asteroza
Rinnai Develops 'Hybrid Water Heater' -- Tech-On!
The obvious next step is a triple hybrid; natural gas burner water heater, air-water heat pump (either standalone like the EcoCute, or as part of a HVAC system in AC mode drawing off waste heat, or combined), waste heat takeoff from a natural gas fuelcell.
air  water  heat  pump  hybrid  gas  heater  japan  hardware  electronics  devices  home  building  construction  architecture  EcoCute  EcoJyozu  Delicious 
february 2010 by asteroza
Magnifye Limited
Using a temperature controlled permeability magnetic screen, these guys are charging a superconducting magnet little by little to large levels (17T?). Possible interesting usages provided you don't care about flux line penetrating the bulk magnet
Magnifye  UK  EU  europe  superconductor  superconducting  bulk  permanent  magnet  magnetization  charging  materials  science  research  technology  heat  flux  pump  Delicious 
october 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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