asteroza + cooling   235

Saarbrücken research team uses artificial muscles to develop an air conditioner for the future | Universität des Saarlandes
Using nitinol shape memory alloys as the thermal medium/matrix in a thermal wheel rotary air heat exchanger, where the wheel itself is the HVAC system!
rotary  heat  exchanger  thermal  wheel  air  entropy  nitinol  shape  memory  alloy  metal  conditioner  heater  HVAC  mechanical  materials  science  research  technology  cooling  heating 
5 weeks ago by asteroza
Review of Fractal Heat Exchangers
Interesting bit about fractal design based heat exchangers. Promise less pressure drop
fractal  heat  exchanger  design  cooling  research  technology 
6 weeks ago by asteroza
Optical cooling achieved by tuning thermal radiation
optical cooling by sticking two objects less than the wavelength of thermal radiation from each other
optical  cooling  photodiode  materials  science  physics  optics  research  technology 
7 weeks ago by asteroza
Aster Thermoacoustics
Interesting work on both thermoacoustic heat sources and matched bidirectional turbines for electrical power generation. Thermoacoustic electrical generators previously used linear alternators, but those prefer faster cycles, which is opposite what the thermoacoustic wants (parts sizing goes up unfavorably when scaling), and slower long stroke linear alternators also have issues (long piston stroke, sealing issues). Using a rectifying bidirectional turbine may be a convenient workaround.
EU  europe  holland  thermoacoustic  research  acoustic  wave  rectifying  bidirectional  turbine  power  generator  cooling  waste  heat  recovery 
10 weeks ago by asteroza
SoundEnergy – Thermo acoustic cooling technology
Thermoacoustic cooler that uses waste heat to make cold directly, no electricity stage
thermoacoustic  cooler  refridgerator  cooling  waste  heat  recovery 
10 weeks ago by asteroza
Diamonds could have the power to recharge drones in flight
Some sort of laser power beaming, using diamond cooled LED lasers?
diamond  cooling  LED  laser  wireless  power  beaming  WPT  transfer 
december 2018 by asteroza
3M and Allied Control Cool Clusters with Novec Bubble Bath
So a HK bitcoin miner switched from FPGA's to ASIC's, but used liquid cooling to keep the mining rigs on-site.
3M  flourinert  Novec  HFC  liquid  immersion  cooling  datacenter 
november 2018 by asteroza
Simultaneously and Synergistically Harvest Energy from the Sun and Outer Space - ScienceDirect
If you can take out the backing metal foil of a PV panel, then line the bottom with a narrow band IR re-emitter that converts rooftop heat to a band that can escape out of the atmospheric IR window, allows roof cooling and power generation simultaneously in theory.
solar  PV  panel  narrowband  IR  emitter  roof  cooling  power  generator  materials  science  research  technology 
november 2018 by asteroza
Trying to do low temperature delta heat exchangers via cheap polymer membranes
polymer  membrane  low  temperature  heat  exchanger  cooling  materials  science  research  technology 
october 2018 by asteroza
Working to keep people cool and safe in personal protective gear - Scope
Uh, so a frozen camelbak connected to a circulator pump connected to biker gloves, cooling the hand palms at 15C.
human  cooling  hazmat  suit 
october 2018 by asteroza
Hierarchically porous polymer coatings for highly efficient passive daytime radiative cooling | Science
New cheapish polymer coating to make a narrowband IR emitter that pumps through the LWIR atmospheric transmission window. So something can be cooled by exposing it to the sky.
passive  daytime  radiative  cooling  narrowband  emitter  IR  materials  science  research  technology  polymer  surface  coating  air  void  phase  inversion 
october 2018 by asteroza
A multicaloric cooling cycle that exploits thermal hysteresis | Nature Materials
Uses a ring of shape memory alloy, and magnets plus compression rollers to enable a 6 stage cooling system.
shape  memory  metal  alloy  giant  magnetocaloric  refridgeration  cooling  materials  science  research  technology  permanent  magnet 
september 2018 by asteroza - 3D printed impeller allows drone to operate for thousands of hours | 3D Printer News & 3D Printing News
3D printing making microturbine turbine blade internal passage air cooling possible, allowing hotter temps thus higher efficiency
3D  printing  fabbing  radial  microturbine  manufacturing  research  technology  air  cooling  cooled  turbine  blade  internal  passage 
september 2018 by asteroza
This is borderline cooling version of a perpetual energy generator, but this is an interesting take on fog net concepts. By lightly ionizing the fog and the capture mesh/net, you can get fog droplets to condense better on the net and exceed normal fog nets (which capture 1-3% of passing droplets).
cooling  tower  fog  net  mesh  droplet  capture  ion  ionizing  water  vapor  electrostatic  space  charge  collection 
june 2018 by asteroza
COMPUTEX2018 FROSTBIT | Research Idea Gear
heatpipe cooler for M.2 drives, with the final heatsink capable of swinging side to side to accommodate internal obstacles.
M.2  NVMe  heatsink  cooler  cooling  heatpipe  hardware  PC  accessories 
may 2018 by asteroza
Special Purpose Nuclear Reactor (5 MW) for Reliable Power at Remote Sites Assessment Report
Report on a brayton air cycle turbine cooled reactor, aka the MegaPower variant of the KiloPower/KRUSTY reactor design
nuclear  reactor  brayton  cycle  air  turbine  cooled  cooling  research  technology  MegaPower  KiloPower 
may 2018 by asteroza
Home - Embr Labs
Not a full cooling solution (doesn't seem to work well above 85 degrees ambient), but possibly good enough for temporary heat relief. Wonder if that's a limitation of the heatsink?
personal  cooling  hardware  electronics  devices  peltier  cooler  kickstarter  wristband  bracelet 
october 2017 by asteroza
SkyCool Systems: The future of cooling
Rejecting heat through atmospheric IR windows to space from the ground. Potentially cooling to sub-ambient!
atmospheric  IR  window  heat  rejection  cooling  HVAC 
september 2017 by asteroza
Patent US20160027536 - Mobile heat pipe cooled fast reactor system - Google Patents
MegaPower, a heat pipe cooled small nuclear reactor, based on the KiloPower work that recently got funded by NASA. Not much comment on the final power conversion system, but heavily implied to be open air cycle brayton. Intended for places like forward bases (FOB)
MegaPower  KiloPower  heatpipe  cooling  cooled  nuclear  reactor  research  patent  LANL  container  containerized  modular  small 
july 2017 by asteroza
OSF | Condensed Publication DRAFT- HOLOS Design 06 23 2017 .pdf
From the designer of CAESAR, a new air cooled nuclear reactor design the fits in a cargo container
pebble  bed  high  temperature  nuclear  reactor  brayton  cycle  power  turbine  generator  air  cooling  compact  container  containerized  subcritical  SMR  modular 
july 2017 by asteroza
Google back geothermal HVAC startup
geothermal  ground  sourced  HVAC  heating  cooling  google 
july 2017 by asteroza
Not a swamp cooler per se, just increasing local humidity with ground cooled water to increase the deltaT of the heat exchanger, also needs water...
external  AC  air  conditioner  accessories  mist  cooling 
july 2017 by asteroza
High Temperature Near-Field NanoThermoMechanical Rectification : Scientific Repo...
thermal diode with actuator to move hot side closer to cold side if hot side is getting hotter
thermal  diode  materials  science  cooling  research  technology  Delicious 
april 2017 by asteroza
Radiative cooling to deep sub-freezing temperatures through a 24-h day–night cyc...
New record, but requires shading from direct sunlight, and a vacuum chamber, and a zinc selenide emission window on the vacuum chamber wall. But 37 degrees below atmospheric ambient is pretty damn good.
atmospheric  IR  window  heat  rejection  vacuum  chamber  zinc  selenide  cooling  Delicious 
december 2016 by asteroza
Traveling-wave thermoacoustic refrigerator driven by a multistage traveling-wave...
Can operate on sub-300C heat pretty well, so suitable for waste heat/bottoming cycle applications.
multistage  regenerator  traveling  wave  thermoacoustic  engine  refridgerator  cooling  Delicious 
december 2016 by asteroza
Radiative human body cooling by nanoporous polyethylene textile | Science
So visual light opaque but IR transparent polyethylene fibers (used in batteries) can be used to make clothing that feels cooler since it isn't trapping IR heat. Coupled with some treatment to make it hydrophilic so it doesn't bead up sweat, and it could be the basis for new summer clothes.
polyethylene  textile  materials  science  research  technology  clothing  apparel  fabric  cool  cooling  Delicious 
september 2016 by asteroza
High thermal conductivity in polaritonic SiO2 nanoparticle beds - Materials Hori...
A heat transfer material that electrically insulates, apparently the surface phonon effect starts at 50C, so easy to use with electronics.
silicon  dioxide  SiO2  nanoparticle  packed  particle  bed  thermal  conductor  surface  phonon  polariton  macroscopic  heat  transfer  ethylene  glycol  cooling  Delicious 
july 2016 by asteroza
Magnetic Refrigeration System - Cooltech Applications
Fluidless, but not really solid state it seems (some sort of rotating wheel)
magnetic  refridgeration  cooling  Delicious 
june 2016 by asteroza
Study and research news | Universität des Saarlandes
Interesting alternative medium for thermal wheel heat exchangers, using shape memory alloy fibers, which have a convenient property of mild stress causing them to heat up.
rotary  adiabatic  thermal  enthalpy  wheel  heat  exchanger  shape  memory  alloy  metal  fiber  store  cooling  research  technology  Delicious 
february 2016 by asteroza
DHX Electric Machines Home
Weird microchannel heat exchanger embedded in the stator winding improves cooling over air or liquid conventional electric motor cooling.
direct  heat  exchanger  winding  stator  cooling  electric  motor  hardware  electronics  devices  propulsion  research  technology  automotive  DeltaWing  EV  Delicious 
january 2016 by asteroza
Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody
Uses the IR window reradiation trick to cool an object by cooling towards space, as space is a heatsink.
photonic  crystal  IR  radiative  cooling  surface  coating  materials  science  research  technology  solar  cell  Delicious 
september 2015 by asteroza
Save 50 dollars on Mistbox with this code:
Basically this sprays the coil unit with water, making this a poor man's version of a deluge evaporation cooler. Naturally, if the humidity is high this becomes less worthwhile. You probably would get better results pressure washing the fins/coil assembly monthly to keep it clean.
AC  air  conditioner  exterior  thermal  heat  exchanger  unit  cooling  mist  water  sprayer  auxiliary  hardware  electronics  devices  Delicious 
june 2015 by asteroza
A Subambient Open Roof Surface under the Mid-Summer Sun - Gentle - 2015 - Advanced Science - Wiley Online Library
Interesting new surface coating that absorbs little heat, rejects what does get absorbed in IR, resulting in a roof cooler than ambient.
composite  polymer  silver  stack  surface  coating  materials  science  research  technology  cooling  IR  heat  rejection  Delicious 
june 2015 by asteroza
The ZEF program
Climatic table is a PCM/radiator lined table as a bulk thermal store that doubles as furniture.
phase  change  material  PCM  thermal  energy  store  table  furniture  cooling  heating  home  decor  Delicious 
may 2015 by asteroza
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