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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
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
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
tunnckoCore/dush: Microscopic & functional event emitter in ~350 bytes, extensible through plugins.
dush - :clap: Microscopic & functional event emitter in ~350 bytes, extensible through plugins.
event  emitter 
october 2017 by Ricamp
Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime r...
Yet another IR narrowband emitter/frequency converter that rejects to space, but interesting method...
selective  IR  emitter  research  technology  metamaterial  materials  science  narrowband  frequency  converter  TPX 
march 2017 by asteroza

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