Heating gasses in space -- How could we make a greenhouse in space?

  • #1
jakehussey
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How could we make a greenhouse in space. Thought experiment!
I was thinking the other day about green houses and how they would act in space or on another planet without an atmosphere. I know that green houses work on Earth by stopping convection but could they theoretically trap heat in a non atmospheric environment? I am imagining a material that allows short wave radiation in and traps long wave from escaping. My assumption is that a gas would have to be used such as CO2 but how could I calculate actual heat generated and how much gas is required?
 

Answers and Replies

  • #2
russ_watters
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Greenhouses also block some radiation - longer wavelength, and the emitted radiation is longer than the avsorbed. But what's the point of a greenhouse in a vacuum?
 
  • #3
DaveC426913
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I suppose we are being biocentric. There could be valid reasons for wanting to passively warm a volume that have nothing to do with living critters.
 
  • #4
jakehussey
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I suppose we are being biocentric. There could be valid reasons for wanting to passively warm a volume that have nothing to do with living critters.
Yes Dave. My initial thought was a passively warm volume in a simple structure on another planetary body for keeping equipment warm or heating substances.
 
  • #5
DrClaude
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Why use a gas? Why not an actual greenhouse?
 
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Likes SammyS and dlgoff
  • #6
Arjan82
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Well, I guess the Earth is a sort of greenhouse in the vacuum of space... 🙃
 

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