asteroza + exchanger   70

Self-sustained biphasic catalytic particle turbulence | Nature Communications
Adding a little hydrofluoroether (HFE) organic solvent to a water based turbulent heater exchanger ups heat transfer 5x because the bubbling action assisted by the HFE pulls new cold liquid to the heat exchanger surface
hydrofluoroether  HFE  turbulent  water  heat  exchanger  cooling  research  technology  transfer  turbulence  active  particle  agitation 
9 weeks ago by asteroza
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 
march 2019 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 
march 2019 by asteroza
Treau
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
Nelumbo
Some sort of surface treatment for heat exchangers that have condensation, that throws off the droplets
hydrophobic  surface  treatment  condensing  heat  exchanger  materials  science  research  technology 
october 2018 by asteroza
Ceramic–metal composites for heat exchangers in concentrated solar power plants | Nature
New hybrid ceramic for use in heat exchangers. Start with a titanium carbide porous block, immerse in a copper and zirconium bath. The zirconium infiltrates the ceramic and displaces titanium in the carbide, while the titanium migrates into the open pores. Copper ends up being a thin film sealant.
supercritical  CO2  heat  exchanger  PCHE  materials  science  research  technology  titanium  carbide  zirconium  copper 
october 2018 by asteroza
SANDIA PROGRESS ON ADVANCED HEAT EXCHANGERS FOR SCO2 BRAYTON CYCLES
Interesting work on casted metal heat exchangers, which may be cheaper/easier to manufacture than PCHE's for some requirements. Investment casting is simpler, and new fancypants 3D printing of sand cores at high resolution may improve surface finish of the mold.
cast  metal  heat  exchanger  CMHE  PCHE  airfoil  finned  fin  curve  materials  science  research  technology 
september 2017 by asteroza
Microtube Heat Exchanger
Paper from 1991 describing microtube heat exchangers, which if short stacked and pumped up at high pressure, would reduce pressure losses. Possible alternative to PCHE.
microtube  heat  exchanger  research 
september 2017 by asteroza
Mezzo Technologies | Home
Microtube heat exchangers, somewhat similar to REL's SABRE precooler heat exchangers for Skylon...
microtube  heat  exchanger  hardware  research  technology  SABRE  precooler  Skylon 
july 2017 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
Scalable 3D Bicontinuous Fluid Networks: Polymer Heat Exchangers Toward Artificial Organs - Roper - 2015 - Advanced Materials - Wiley Online Library
So apparently, they make a heat exchanger from an insulatiing polymer by making the walls thinner than 1 micron through a print/coat/strip methodology.
polymer  heat  exchanger  3D  printing  fabbing  materials  science  research  technology  Delicious 
october 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
SANDIA PROGRESS ON ADVANCED HEAT EXCHANGERS FOR SCO2 BRAYTON CYCLES
Interesting take on 3D printed lost wax style cast metal heat exchangers, similar to PCHE's with advanced features like airfoils.
CMHE  cast  metal  heat  exchanger  research  technology  supercritical  CO2  3D  printing  fabbing  Delicious 
november 2014 by asteroza
Coiled Tube Air Heaters (CTAHs) | FHR@UCB
Interesting molten salt to air (liquid to gas) heat exchanger, intended for auxiliary power generation for a nuclear air combined cycle plant.
CTAH  coiled  tube  air  heat  exchanger  spiral  molten  salt  nuclear  gas  combined  cycle  NACC  hardware  Delicious 
october 2014 by asteroza
Wilson Solarpower | Concentrated Solar Generates Low Cost Electricity
Concentrating solar hot air microturbine power generator it seems, with fueled assist at night.
CSP  concentrating  solar  power  ceramic  heat  exchanger  hot  air  turbine  microturbine  generator  microgeneration  hybrid  gas  Delicious 
january 2014 by asteroza
JK0411025.pdf
See patent 20090294113 for more about airfoil type PCHE design, which apparently has substantially more heat exchanger performance (14x lower pressure drop and 1% improved heat transfer compared to zigzag pattern PCHE setups).
reactor  PCHE  technology  turbine  CO2  research  heat  nuclear  supercritical  cooling  circuit  printed  SCO2  exchanger  airfoil  Delicious 
february 2013 by asteroza
太陽光の熱を朝日から夕陽まで回収し効率よく発電:報道発表資料|2013年 プレスリリース|理化学研究所
Riken's press release on the Fresnel lens solar thermal wankel rotary heat engine. Apparently the lens tech is fairly advanced, being developed as a telephoto lens for observing high energy cosmic rays, with high optical transparency and a surface roughness less than 20nm. They used a three sided lens structure (top plate and two vertical plates), called a "Fresnel Sun House" to gather light well onto a T shaped thermal absorber/heat exchanger, even when the sun is close to the horizon at sunrise/sunset.
absorber  concetrator  cycle  thermal  optics  engine  green  plate  rotary  wankel  solar  heat  lens  research  japan  Riken  generator  power  CHP  fresnel  exchanger  energy  rankine  Delicious 
january 2013 by asteroza
Composites for Seawater Desalination - Press Release 4 October 2012
Near composite piping suitable for low temperature heat exchanger evaporators for desalination. Applicable to OTEC for shell and tube type heat exchangers, rather than Heatric type printed heat exchangers, as the tubes could be built this way coupled with an outer carbon fiber pressure shell to make a highly corrosion resistant heat exchanger for seawater exposure
copper  microfiber  polymer  composite  tube  tubing  heat  transfer  materials  science  research  technology  desalination  exchanger  thermal  shell-and-tube  evaporator  OTEC  Delicious 
october 2012 by asteroza
ULTRAMET - Advanced Materials Solutions
Apparently involved with a new high temp noise suppression foam made from hafnium carbide/silicon carbide that ca be stuffed directly into a combustor to provide combustion noise suppression. The foam has high permeability, allowing gases and combustion to move freely, and the structure helps to create uniform combustion. Though I can't imagine this being useful for any high speed gas /liquid fuel combustors/engines, but the press releases talked about jet engines so maybe it actually can?
metal  ceramic  foam  high  temperature  noise  suppression  materials  science  research  technology  heat  exchanger  rhenium  solar  thermal  rocket  propulsion  space  thruster  Delicious 
may 2012 by asteroza
Device Research Laboratory
Interesting work on a high performance compact air cooled heatsink with integrated forced air blower and multi-loop condenser heatpipe arrangement
PHUMP  pumped  heat  exchanger  high  efficiency  air  dry  cooling  heatsink  low  power  fan  motor  heatpipe  impeller  small  form  factor  compact  thermal  management  research  hardware  DARPA  MACE  Delicious 
june 2011 by asteroza
LinkClick.aspx (application/pdf Object)
Using alumina particle solid media in a gas working fluid thermal energy storage setup with cyclical counter current heat exchangers. Sounds like the Isentropic Energy guys with their gravel heat store.
counter  current  cyclic  heat  exchanger  thermal  energy  storage  concept  alumina  particle  solid  media  gas  working  fluid  Delicious 
june 2011 by asteroza
Radiator Graphite-Foam.pdf (application/pdf Object)
Interesting concept for using airfoil pressure differential to force air through a heat exchanger embedded in the rear third of an airfoil, while having low frontal drag area. As noted in the PDF, for vehicle applications there will still be a need for an auxiliary fan when stopped, which likely means the airfoil will still be in the engine bay or embedded in the hood to utilize the forced air fan.
Open  pore  porous  high  thermal  conductivity  graphitic  graphite  foam  lightweight  radiator  heat  exchanger  hardware  research  control  materials  science  technology  filetype:pdf  media:document  Delicious 
may 2011 by asteroza
EcoDrain | high performance shower heat exchange
Obvious only useful for shows and normal sinks. I can't imagine having one behind a kitchen sink or toilet, imagine having to clear that...
EcoDrain  waste  Water  heat  recovery  exchanger  green  energy  home  house  hardware  plumbing  heating  hot  Delicious 
april 2009 by asteroza

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