asteroza + brayton   21

ToughSF on Twitter: "Strayton: combined Stirling and Brayton cycles engine that drives a linear magnetic generator with 58% overall efficiency."
Wait a sec, this strayton smells like an aviation turbocompound diesel cycle. The thermoacoustic part is a nice touch, but recent work shows a bad match between linear alternators and thermoacoustic systems (but did show a novel solution using a rectifying bidirectional turbine substituted for the piston)(See Aster Thermoacoustics), but this paper is proposing a triangle shaped loop thermoacoustic system called DELTA (Double-Acting Extremely Light Thermo-acoustic Converter) to overcome a linear piston's limitations.
hybrid  compound  stirling  brayton  cycle  engine  turbocompound  thermoacoustic  powerplant  propulsion  electric  research  technology  NASA 
9 weeks ago 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
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
Fluoride Salt-Cooled High Temperature Reactor (FHR) Project | CANES
Don't like the pebble fuel, but this is probably a more achievable NACC configuration, as it isolates secondary loop better in case of primary loop leaks, compared to other proposed NACC systems, which use helium gas reactor, with a helium turbine within containment driving an external air compressor also in containment sucking in and then expelling external air through containment which isn't good (which I suppose that might be solvable with a shaft through the containment wall with frangible clutches).
NACC  PB-FHR-pebble  bed  salt  cooled  nuclear  reactor  combined  cycle  indirect  air  heating  gas  turbine  power  generator  research  technology  brayton  steam  bottoming  Delicious 
february 2015 by asteroza
ACT-RPR-NPS-1107-NTER-paper-final - ACT-RPR-PRO-1107-LS-NTER.pdf
NTER, a nuclear thermal electric rocket design. Uses LH2 propellant to cool a helium brayton cycle turbine fed by a NTR that heats hydrogen and helium, then tries to supercharge the supersonic nozzle exhaust with an induction loop (which seems to require cesium seeding in the exhaust??). Also has optional oxygen feed, to emulate LANTRN. Seems like you could do better with the NTR feeding a VASIMR though...
cycle  technology  turbine  thermal  electric  induction  acceleration  LH2  space  ESA  research  propulsion  brayton  nuclear  LANTRN  rocket  loop  generator  power  helium  NETR  LOx  augmented  nozzle  MHD  Delicious  aerojet  NTR  NERVA  bimodal  thrust  heating  turboinductor  turbo-inductor  NTER  supercharger  turbocharger  augmentation  heater  resistance  ohmic  inductive 
september 2013 by asteroza
SuperCritical Technologies | Mobile Power Plants
This appears to be the company commercializing/partnering with Sandia for supercritical CO2 brayton cycle turbine technology.
technology  research  fluid  transfer  heat  cooling  generator  power  cycle  brayton  dioxide  carbon  CO2  supercritical  Sandia  Delicious 
september 2012 by asteroza
ASME 2011 Small Modular Reactors Symposium - SMR2011
Interesting papers (6520 and 6554) about a hybrid nuclear/combustion gas turbine plant, Using a helium gas brayton cycle turbine to run a decoupled air compressor for a linked coal gasification syngas powered combustion turbine (with likely combined cycle steam plant which could also be linked with the nuclear side of the plant). Also talking about integrated process heat and synfuel production. Natural gas carrot to try to get nuclear synfuel production capabilities? There is some CAES talk since the air compressor is decoupled which would allow storage, and nuclear heat is available for air reheat when releasing from storage.
hybrid  helium  nuclear  reactor  gas  brayton  cycle  turbine  coal  gasification  syngas  combined  decoupled  air  compressor  power  generator  concept  design  CAES  compressed  air  storage  energy  Delicious 
february 2012 by asteroza
11380.pdf (application/pdf Object)
New lead cooled SMR that is train transportable/installable. Uses a supercritical CO2 brayton turbine for the generator for compactness.
SUPERSTAR  natural  circulation  lead  coolant  cooling  fast  spectrum  small  modular  nuclear  reactor  SMR  research  power  generator  supercritical  CO2  brayton  turbine  SCO2  Delicious 
february 2012 by asteroza
Brayton Energy - Research and Development in Alternative Energies - Hampton, NH - 603-601-0450
Split cycle solar thermal brayton air turbine setup, using grid surplus power at night to store compressed air, and during the day running that air through a solar concentrator dish heat exchanger powered air turbine (with exhaust recuperator to warm the cool air being released from the night storage)
solar  thermal  brayton  cycle  air  turbine  dish  collector  split  compression  expansion  power  generator  green  energy  SolarCAT  turbogenerator  compressed  Delicious 
june 2011 by asteroza
Hybrid Power Technologies, LLC
Odd ball hybrid nuclear/combined cycle gasified coal powerplant design. Uses a gas cooled reactor turbine to drive the combustion turbine's decoupled compressor to get disgustingly high pressure for combustion.
hybrid  helium  nuclear  reactor  gas  brayton  cycle  turbine  coal  gasification  syngas  combined  decoupled  air  compressor  power  generator  concept  design  CAES  compressed  storage  energy  NACC  Delicious 
may 2010 by asteroza

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