Thermodynamic limits of energy harvesting from outgoing thermal radiation

@article{Buddhiraju2018ThermodynamicLO,
  title={Thermodynamic limits of energy harvesting from outgoing thermal radiation},
  author={Siddharth Buddhiraju and Parthiban Santhanam and Shanhui Fan},
  journal={Proceedings of the National Academy of Sciences},
  year={2018},
  volume={115},
  pages={E3609 - E3615}
}
Significance A large part of the research on renewable energy has focused on harvesting power from solar radiation. But, for the Earth to maintain its temperature, it must radiate to the outer space an amount of power approximately equal to that of the incoming solar radiation. However, far less is understood about the theoretical limits of harvesting power from such outgoing radiation. Here, we identify a duality relation between harvesting incoming and outgoing thermal radiation and use it to… 

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Significance The sun (∼6,000 K) and outer space (∼3 K) are two natural energy resources for humans. However, most of the approaches of energy harvesting from the sun and rejecting energy to outer

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