Comment on how do plants in a green house get enough co2?

jeena@piefed.jeena.net ⁨3⁩ ⁨weeks⁩ ago

• untorquer@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  It’s called diffusion. Unless the greenhouse is hermetically sealed, and the rate of consumption does not exceed the rate of diffusion, the ratio of CO2 will be similar to that outside.

  A simple vent will be enough if not just small gaps in the structure.

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  • ryathal@sh.itjust.works ⁨2⁩ ⁨weeks⁩ ago

    Also, most green houses have fans that can help circulate air in from the exterior.

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    • untorquer@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      I’m inclined to think the fans are more for fanning the plants so they can perspire and breathe more readily. Many plants need a breeze to grow well.

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      • SolarMonkey@slrpnk.net ⁨2⁩ ⁨weeks⁩ ago

        Usually both, in my experience.

        You’ll have fans for plants that firm up stems and stuff, in addition to helping with transpiration.

        Then you’ll have fans or passive vents near the highest point that move air outside, usually for the sake of venting excess heat and humidity. If you live somewhere cold, these probably stay closed through colder times and are active/open only during the height of summer (these are often the passive vents). If you live somewhere warm, it’ll probably always be active fan-driven, and usually running.

        A lot of people have their ventilation system hooked to climate control sensors, so it only engages when it crosses a certain threshold.

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• presoak@lazysoci.al ⁨2⁩ ⁨weeks⁩ ago

  The oxygen level inside is lower than outside. It might affect your health.

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  • SoleInvictus@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

    I can’t tell if you’re joking or not. Unless a home is small, effectively airtight, filled with people, and the doors and windows are never opened, oxygen concentrations aren’t going to fall enough to be impactful.

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    • lemming741@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      CO2 levels can get too high on new construction, but that’s a 600-1000 ppm increase.

      Elevation will have a much larger effect on your body’s O2 availability compared to what humans can deplete.

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    • SpacetimeMachine@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      youtu.be/1Nh_vxpycEA

      Yes but CO2 concentrations might grow high enough to impact you.

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