asteroza + thermal   371

Pumped thermal grid storage with heat exchange: Journal of Renewable and Sustainable Energy: Vol 9, No 4
paper outlining a mixed molten salt/liquid air type thermal energy store similar to Google's Malta subsidiary design.
thermal  energy  storage  molten  salt  liquid  air  nitrogen  LN2 
8 weeks ago by asteroza
Malta Inc.
Molten salt heat storage, but antifreeze based liquid cold storage?
molten  salt  thermal  energy  storage  google 
9 weeks ago by asteroza
Contactless steam generation and superheating under one sun illumination | Nature Communications
Okay, it's cheating to say one sun when using a concentrator, but switch from direct contact heat transfer with capillary flow to IR emitter and vapor passthru is interesting
carbon  foam  solar  heat  absorber  IR  thermal  emitter  steam  generator  passive  materials  science  research  technology 
9 weeks ago by asteroza
Two-Stage-to-Orbit Transporting System Combining Microwave Rocket and Microwave Thermal Rocket for Small Satellite Launch
Mirabo's air breathing laser lightcraft used lasers to ignite air plasma, this is proposing something similar using microwaves for a rocket booster stage, then beamed microwave thermal for the second stage.

Notable here is the determination that you can cheat the trajectory to favor a higher altitude initial vertical boost, take the gravity loss hit during a cold coast to the second beam director LoS, then have a longer second stage beamed thermal burn. Allegedly 3x payload compared to a UAV air drop launch to a single beam director site?

But how does a common microwave beam work here for first and second stages? Is the first beaming site only a pulsed microwave system? Does microwave PDE even work with continuous wave microwaves?
pulsejet  microwave  pulse  detonation  engine  PDE  rocket  thermal  beamed  propulsion  space  research  technology  japan 
10 weeks ago by asteroza
Cubinote Pro | Smart Wireless Printer For Work. For Play. For Life.
Wait, no adhesive, so not actually a Post-It Note, just a wireless thermal printer then?
postit  note  thermal  printer  wireless  hardware  electronics  devices 
november 2018 by asteroza
Macroscopic heat release in a molecular solar thermal energy storage system - Energy & Environmental Science (RSC Publishing) DOI:10.1039/C8EE01011K
So, sensitive to UV only currently, but potentially interesting as a solar thermochemical storage medium. If you can preheat water to 40C, this will get you to boiling at 100C.
quadricyclane  molecular  solar  thermal  energy  storage  norbornadiene  materials  science  research  technology  thermochemical  photoswitch  photothermochemical 
november 2018 by asteroza
KESTREL MATERIALS
Trying to make fabrics that bulk up when it gets colder, to provide more insulation
thermal  responsive  temperature  reactive  fabric  textile  materials  science  research  technology 
october 2018 by asteroza
Antora Energy — Cyclotron Road
Combo cheap thermal storage and a TPV generator. Wonder if it's molten silicon?
thermal  energy  storage  TPV  thermophotovoltaic  power  generator  research  technology 
october 2018 by asteroza
On the Use of a Pulsed Nuclear Thermal Rocket for Interplanetary Travel | 52nd AIAA/SAE/ASEE Joint Propulsion Conference
Fission pulses do neutron heating of hydrogen propellant to plasma conditions, but you need to liquid metal cool the fuel. Neat result is propellant can get hotter than the fuel due to neutron flux. Though a NTER strikes me as easier to implement...
pulsed  nuclear  thermal  rocket  engine  space  propulsion  research  technology  fission 
october 2018 by asteroza
The optical duality of tellurium nanoparticles for broadband solar energy harvesting and efficient photothermal conversion | Science Advances
Putting the tellurium nanoparticles directly in the water sounds like a bad plan for an industrial process, but this might lead to a better solid absorber for a thermal receiver?
tellurium  nanoparticle  broadband  solar  absorber  materials  science  research  technology  nanophotonic  photothermal  water  evaporation  seawaer  thermal  desalination  distillation 
august 2018 by asteroza
Turbo Rocket 8Jul18.pptx - Google Drive
Bringing back the NTTR for another round, this time it looks like it's taking the immense heatsink advantage of LH2 to run a fan/compressor for a SERJ and the turbopumps for an otherwise conventional rocket engine pack. Sorta conceptually similar to RocketLabs doing an end-run by using an electric motor to boost a conventional rocket motor that would have been limited to pressure fed or gas-generator.
NTTR  SCTR  nuclear  thermal  staged  combined  cycle  rocket  engine  space  propulsion  research  technology  SERJ  combustion  supercharged  air  augmented  multimode 
july 2018 by asteroza
1414degrees.com.au – Energy for all, at all times
appears to use an externally fired gas turbine for power production, but no indicator of how they heat it
molten  silicon  thermal  energy  storage 
june 2018 by asteroza
electricity
NACC-FIRES is predicated on cheap brick heated by resistance heaters, but I wonder if you could do something like this, where you use the induction furnace to melt the silicon, and bubble the air through somehow...
molten  silicon  thermal  energy  storage 
june 2018 by asteroza
SILSTORE
Very high temperature (up to 1400C) molten silicon thermal energy storage. The kicker seems to be using concentrated solar power to melt, and a thermophotovoltaic system to recover power rather than a brayton cycle turbine using an intermediary fluid.
molten  silicon  thermal  energy  storage  concentrating  solar  thermophotovoltaic  TPV  power  generator 
june 2018 by asteroza
Development and Short-Range Testing of a 100 kW Side-Illuminated Millimeter-Wave Thermal Rocket
So Parkin and crew as part of the MTLS project got to phase 2, demoing a millimeter wave beamed thermal rocket launch. Some reports are 33kW received rather than 100kW though
microwave  millimeter  wave  beamed  thermal  propulsion  rocket  space  research  technology 
may 2018 by asteroza
Pyroelectric energy conversion with large energy and power density in relaxor ferroelectric thin films | Nature Materials
low grade heat makes thermoelectric power generation a pain, but using a nanofilm and pyroelectric effects might work. ZT for 10 degrees is 1.16
thermoelectric  pyroelectric  thermal  power  generator  harvestor  scavenger  nanofilm  thinfilm  materials  science  research  technology 
april 2018 by asteroza
Solar Thermal Propulsion for Small Spacecraft - Engineering System Development and Evaluation
Using fiber optics to simplify the arrangement between a solar concentrator rig and the actual solar thermal thruster
smallsat  small  spacecraft  space  propulsion  CSP  fiber  optic  solar  thermal  thruster  decoupled 
april 2018 by asteroza
Siemens Gamesa / Communication / News / Start of construction in Hamburg-Altenwerder: Siemens Gamesa to install FES heat-storage for wind energy
This appears to be hot gravel thermal energy storage medium, but it isn't clear is the working fluid is air or not (thus how the rock fill is "charged"), only that it's driving a steam boiler/turbine.
Siemens  hot  rock  gravel  fill  thermal  energy  grid  storage  green 
april 2018 by asteroza
Transactions of the Symposium on Space Nuclear Power Systems, (5th) Held at Albuquerque, New Mexico on January 11, 1988. | National Technical Reports Library - NTIS
The PDF contains info on wheelguns, giant counterrotating flywheel hoops in space to supply power to SDI weapons, mainly railguns/particle accelerator cannons/free electron lasers that need huge amounts of power right now. Appears to expect to be trickle charged over time by a small space nuclear reactor (SNAP? atomic teakettle?). Also has an interesting microwave power beaming scenario from a nuke in mars synchronous orbit to a ground rover, high performance radiators, including a fabric heatpipe radiator, a curie point magnetic liquid droplet radiator, and other power conversion concepts.
SDI  wheelgun  space  counterrotating  flywheel  hoop  energy  storage  power  generator  FEL  free  electron  laser  railgun  neutraal  particle  accelerator  cannon  military  WPT  microwave  transmission  mars  MSO  rectenna  rotating  loop  pulsed  fabric  radiator  heat  thermal  management 
march 2018 by asteroza
Ultra-high thermal effusivity materials for resonant ambient thermal energy harvesting | Nature Communications
Some sort of thermal resonator energy store/power bank that can be coupled with conventional thermoelectric power generators
ambient  energy  harvester  scavenger  thermal  resonator  thermoelectric  power  generator  low 
february 2018 by asteroza
Airthium - Thermodynamic Energy Storage
Something smells about their roundtrip efficiency if they are above ground, and I wonder how they are 3x cheaper than pumped hydro. Apparently a CAES with molten salt thermal storage?
thermal  energy  storage  battery  france  CAES 
february 2018 by asteroza
MegaPowerTower
freaky ammonia heat pipe solar thermal rig
ammonia  heatpipe  solar  thermal  power  generator  tower 
january 2018 by asteroza
OSA | Achieving cryogenic temperatures in deep space using a coating
FISO briefing has more, but a pressed powder of BaF2 used for tank coating and thermal standoffs for a LOx tank in space might allow storage of LOx without a crycooler (with the risk of LOx freezing out in deeper space!) due to reradiation
BaF2  heat  rejection  optical  surface  coating  thermal  management  cyrogenic  materials  science  research  technology  tank  space 
january 2018 by asteroza
Fission-activated laser as primary power for CW laser propulsion
This seems to go over the FALCON nuclear pumped laser reactor as a 10MW prototype for a laser thermal beamed power SSTO.
laser  thermal  beamed  power  SSTO  rocket  space  nuclear  pumped  reactor 
december 2017 by asteroza
Tough SF: Liquid Rhenium Solar Thermal Rocket
Interesting solar thermal concept using a liquid primary heat receiver. Needs some work on the solar window end of the barrel design.
space  solar  thermal  propulsion  liquid  metal  heat  receiver 
october 2017 by asteroza
Soft material for soft actuators | Nature Communications
An ethanol infused 3D printed silicone matrix apparently makes for a pretty good soft actuator that requires low activation energy, but it is effectively thermal based, which makes environmental conditions and position holding a pain
silicone  matrix  ethanol  vapor  thermal  expansion  soft  actuator  artificial  muscle  robotics  3D  printing  fabbing  materials  science  research  technology 
september 2017 by asteroza
PHAZE - colour changing paint - Purple Haze to Pinkest Pink – Culture Hustle
PHAZE is a colour changing acrylic paint set by Stuart Semple. This coating enables almost any object to be coated in a durable, ultra matte finish that changes
liquid  crystal  thermal  reactive  paint  art 
august 2017 by asteroza
Home
Working on molten silicon thermal energy storage
EU  europe  molten  silicon  boron  high  temperature  thermal  energy  storage  TIPV  thermionic  photovoltaic  conversion 
august 2017 by asteroza
falling-particle receiver – Sandia Energy
some sort of falling sand solar heat receiver, attempting to overcome some molten salt solar receiver limitations
Sandia  falling  particle  solar  thermal  heat  receiver  sand  heatsink  storage 
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
1414degrees.com.au – Energy for all, at all times
Interesting molten silicon based thermal energy storage battery. But melt point is 1414C...
high  temperature  thermal  energy  storage  battery  TESS  molten  silicon  Delicious 
february 2017 by asteroza
Empa - 604 - Communication - NaOH-heat-storage
thermochemical energy storage using NaOH solutions and water, might be suitable for home use
thermochemical  thermal  energy  storage  heat  heating  materials  science  research  technology  NaOH  solution  Delicious 
january 2017 by asteroza
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