asteroza + scavenging   95

Exergyn®
Power generator using cycling waste heat hot water/cooling water to drive a shape memory alloy wire actuator piston, which drives a hydraulic transmission and power generator. Made a discovery for high cycle ninitol alloy (10 million versus 1 million cycles for regular NT wire) to make the linear actuator work for industrial applications. Uses direct impingement of hot water and cold water to cycle the actuator though...
nitinol  shape  memory  metal  alloy  materials  science  research  technology  wasteheat  power  generator  linear  actuator  piston  hydraulic  transmission  drive  scavenging  harvesting  high  cycle  fatigue  resistance 
march 2019 by asteroza
Harvesting electrical energy from carbon nanotube yarn twist | Science
twisted nanotube yarn submerged in an electrolyte operates like a variable area supercapacitor, usable as an energy harvestor
twistiron  carbon  nanotube  CNT  yarn  power  generator  kinetic  energy  harvestor  scavenger  harvesting  scavenging  supercapacitor  fiber  stretching 
august 2017 by asteroza
[1505.06815] Powering the Next Billion Devices with Wi-Fi
So apparently you can now power surveillance cameras using radiant wifi signals. A wireless version of PoE cameras then?
RF  energy  harvesting  scavenging  recovering  wifi  wireless  power  generator  PoWi-Fi  research  technology  IoT  internet-of-things  Delicious 
june 2015 by asteroza
Nikola Labs
Er, seems to try to pick up stray omnidrectional signal power that would nominally be wasted (stuff going down for example) and back convert it to power via a rectifier, but don't you need to really tune the rectifier/antenna/rectenna to the specific locations of a cellphone's transmitter antennas?
RF  scavenging  harvesting  rectifier  power  generator  hardware  electronics  devices  Delicious 
may 2015 by asteroza
GoKin Packs | Powered by you
Backpack power generator that recovers walking energy of a sort by attaching ratcheting cables to the back of your shoes. Which means this backpack is effectively trying to trip you by pulling your feet out from under you, if it pulls too hard. Not suitable for hiking through thick underbrush. I wonder how annoying the cable tension is on walking gait/posture. That said, it seems to have pretty good performance as it's effectively using leg extension for power (much like a land rowing machine)
kinetic  energy  harvesting  scavenging  walking  power  generator  pack  backpack  cable  reciprocating  camping  survival  gear  hardware  electronics  devices  Delicious 
june 2014 by asteroza
GT | News Center :: Harvesting Electricity: Triboelectric Generators Capture Wasted Power
A rubbing type kinetic energy scavenger power generator system it seems, using an electron donor sheet, a electron hole sheet, and some sort of bridging electrode. So apparently they have demoed a 10cm disc shaped 3K RPM version generating 1.5W at 24% efficiency, which seems to be 3x piezoelectric (but how would you do a 3K RPM piezoelectric generator to begin with for comparison anyways? I guess they mean 3K impacts per minute)
triboelectric  scavenging  energy  power  generator  georgiatech  recovery  materials  science  research  technology  Delicious 
march 2014 by asteroza
Motorbike Generates Electricity Using Its Exhaust Gas -- Tech-On!
Bizarre hybrid device, that uses unburnt hydrocarbons in scooter exhaust gas to heat/run a SOFC fuelcell, which also has thermoelectric elements wrapped around the SOFC tubes to capture waste heat as well. Though my first question would be why use a crappy two/four stroke scooter engine in the first place? Why not a series hybrid powerplant, with a microturbine generator with fuelcell combustor? Though I suppose as an aftermarket mod, as long as it doesn't raise exhaust gas pressure losses too much, it might be an easy conversion...
thermoelectric  waste  conversion  scavenging  heat  fuelcell  SOFC  gas  solid  japan  oxide  power  generator  exhaust  hybrid  scooter  Delicious 
september 2013 by asteroza
Humdinger :: Windbelt Large
Using the buzzing effect of a taut belt in wind, these guys use a piezoelectric fabric to recover the vibration energy of the belt as it resonates in the passing wind turbulence. The only big issue I can see is the noise generated, as by design you lose a fair amount of wind generated power to acoustic loses
Humdinger  Windbelt  piezoelectric  fabric  belt  vibration  resonance  wind  noise  oscillation  turbulence  power  generator  harvesting  scavenging  green  energy  Delicious 
july 2011 by asteroza
Home | Highview Power Storage
Interesting energy storage idea, similar to CAES but reverses some of the problems. Efficiency improves somewhat if it can use an on-site waste heat source rather than ambient air (implying a colocated coal or gas turbine plant as baseload providing nighttime recharge of the cryogenic tank)(this can use any kind of low grade heat, even stuff that ORC stuff would sniff at). Total storage volume is less than CAES since you are dealing in liquids and not gases, though you commit to a large number of cryogenic tanks. You could probably couple this with an ASU, so you have a side business of liquid oxygen and liquid nitrogen production, focusing on LN2 as your working fluid. Assuming a gas turbine is your nominal heat source, you could potentially do an oxyfuel/IGCC style setup where some turbines are run in cold nitrogen gas mode while others are in oxygen/methane burning mode, with steam recovery secondary generation coupled to tertiary warming of liquid nitrogen.
Highview  CES  cryogenic  liquid  air  energy  storage  green  battery  waste  low  grade  heat  recovery  scavenging  harvesting  Delicious 
march 2011 by asteroza
Innowattech - Energy Harvesting Systems
Interesting that they are targeting railways. I suppose it could potentially supply power to railway crossings, at least as an auxiliary source. It may be possible to power noise cancellation speakers...
israel  piezoelectric  power  generator  harvester  scavenger  harvesting  scavenging  green  kinetic  energy  KE  pad  plate  Delicious 
december 2010 by asteroza
Vibration-powered Generators Replace AA, AAA Batteries -- Tech-On!
Interesting concept for a AA form factor battery with a built in vibration harvesting energy generator to charge the (admittedly small) onboard battery/capacitor. Useful for low power low duty cycle applications, like TV remotes.
Brother  vibration  energy  cell  battery  research  kinetic  harvesting  recovery  scavenging  storage  generator  AA  AAA  form  factor  Delicious 
july 2010 by asteroza
General Atomics Tests Thermal Energy Storage Device for Directed Energy Weapons
A psuedo regenerative setup, recovering waste heat from directed energy weapons for reuse, while cooling the weapon at the same time
general  atomics  PCM  phase  change  material  materials  science  research  technology  thermal  energy  storage  cooling  DEW  directed  weapon  military  recovery  scavenging  Delicious 
june 2010 by asteroza
Green Car Congress: Thermoelectric Generator Integrated Into Muffler; Up to 5% Improvement in Fuel Economy Possible
Interesting usage of bimetallic strip actuators to keep the TEG modules from overheating, and as a simple muffler retrofit kit. Still won't overcome the backpressure issue short of making the muffler huge though.
TEG  thermoelectric  power  generator  retrofit  exhaust  muffler  hardware  automotive  vehicle  transportation  green  energy  recovery  scavenging  harvesting  Delicious 
april 2010 by asteroza
02.12.2010 - New fiber nanogenerators could lead to electric clothing
This would be more interesting as a solid state generator stretchable rope, attached to an anchor and ocean buoy for wave power generation.
nanofiber  piezoelectric  power  generator  materials  science  research  technology  green  energy  scavenging  harvesting  powersuit  nanogenerator  nanotechnology  clothing  fiber  Delicious 
february 2010 by asteroza
Glass leaf 'sweats' to generate electricity - tech - 30 July 2009 - New Scientist
Oddball energy scavenging system using natural evaporation as a capillary driver. I wonder if this could be built into humidifying systems?
green  energy  Water  transpiration  evaporation  capillary  action  capacitance  power  generator  artificial  vein  leaf  glass  scavenging  harvesting  recovery  Delicious 
august 2009 by asteroza
New Energy Technologies Inc. (Symbol NENE): Press
Makes of the MotionPower kinetic energy recovery plate to scavenge energy from the passing of vehicles over the plate.
kinetic  energy  KE  scavenging  harvesting  power  generator  green  vehicle  motion  recovery  MotionPower  Delicious 
july 2009 by asteroza
Bionic Power
They need to start selling microUSB type rechargers.
PowerWalk  BionicPower  bionic  brace  energy  generator  green  harvesting  harvestor  kinetic  knee  leg  power  scavenging  portable  storage  Delicious 
february 2009 by asteroza
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