I don't follow your thinking.
Harvesting solar input is directional, radiating therough the Atmospheric Window is omnidirectional.
Your huge bonfire radiates at a lower frequency than the Atmospheric Window.
Quote:
https://www.quora.com › What-types-of-infrared-radiation-does-fire-emit?share=1
What types of infrared radiation does fire emit? - Quora
The types of infrared radiation will be dependent upon on how high the temperature can reach or how hot the fire can be produced.. since infrared wavelength can be anywhere from 0.7 to 10 microns of the electromagnetic frequency spectrum.. Horace Tucker Former Physics Teacher (1975-1978) Author has 5K answers and 1.9M answer views 9 mo
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Sounds like the difference between near and far infrared.