Flutterby™! : Light from Darkness

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Light from Darkness

2019-09-12 22:51:25.950837+00 by Dan Lyke 2 comments

Joule — Generating Light from Darkness Aaswath P. Raman, Wei Li, Shanhui Fan

DOI: https://doi.org/10.1016/j.joule.2019.08.009

... In this paper, we experimentally demonstrate a simple, low-cost way of generating electricity at night based on a thermoelectric module that generates enough electricity to passively power a light emitting diode (LED) at night. This system is entirely passive, i.e., with no active power input, and is constructed in a low-cost modular fashion. We characterize the system’s performance under a clear night sky under varying loads. We then show that the system’s performance can be effectively modeled using knowledge of the thermoelectric module’s properties, the air temperature, and the atmospheric properties in the mid-infrared window where the sky is transparent. Finally, we show that the electricity generated is enough to power a LED—thus, we generate light from darkness.

This $30 Device Turns the Cold of Outer Space Into Renewable Energy

[ related topics: Cool Science Theater & Plays Space & Astronomy Fashion ]

comments in ascending chronological order (reverse):

#Comment Re: Light from Darkness made: 2019-09-13 12:57:18.007744+00 by: Larry Burton

Cool! A lunar cell!

#Comment Re: Light from Darkness made: 2019-09-13 13:59:41.704427+00 by: TheSHAD0W

Interesting. May not work well when it's overcast though.

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