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Thread: Fan + Science + Air vents = Air circulation?

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    Capensis's Avatar
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    Fan + Science + Air vents = Air circulation?

    I was wondering "If warm air rises, then wouldn't cooler wind a fan produces make the warmer air rise, thus making air circulation?" The temp in the tank might go down just a bit, but it would be better to have circulation than the temp, right?
    http://www.terraforums.com/forums/image.php?type=sigpic&userid=6789&dateline=1352508752

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    Stay chooned in for more! Clint's Avatar
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    I don't understand your question. If you have a fan, you're going to have air circulation regardless of any temperature differentials. The air is being moved physically, not thermally.


    The fan doesn't produce anything, it just moves what's behind it forward and outward. The air it's "pushing" will be the same as the air it's "pulling" unless some evaporative cooling takes place, and then the air would have to go through or over something wet for that to occur, and the temps and RH already present have a play in that, too. Adequate circulation will "homogenize" the RH and temperature inside your terrarium.

    Are you talking about blowing cool from elsewhere through a vent into your terrarium? This will cool it down some if that's what you're looking for, but if all you want it air circulation, then just put a fan inside your terrarium. Of course not sealing it is good, but doesn't really cut it IMO. You just totally lost me with this post. I'm not sure what you're talking about.

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    Capensis's Avatar
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    When I'm talking about a fan, I mean a ceiling fan on the roof. The air that it "pushes" as to what you say will make the air above the terrarium rise since it's warmer, right? Will, if the air can circulate better bercause of that, that means a ceiling fan can be of use to circulate the air in the terrarium by having the air in the top rise quicker becuase of the "wind" the fan creates, thus making it rise or escape. See where I'm going with this?
    http://www.terraforums.com/forums/image.php?type=sigpic&userid=6789&dateline=1352508752

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    Stay chooned in for more! Clint's Avatar
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    A ceiling fan? Lmao.



    Tears are coming out! Why would you do THAT? I mean.. that's really silly. Just get a small fan and put it inside your terrarium. What's the problem with this? And a fan, ceiling or otherwise, is going to create air circulation REGARDLESS of the temperature. You could have a fan in a room that's 100 degrees, and if the fan is on there will be air circulation.

    Maybe Butch will step in and lecture us on Boyle's law and Bernoulli's principle

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    Always a newbie glider14's Avatar
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    nope.

    just put a small fan in your terrarium like a PC fan. itll move the air. bam. air circulation. having an external fan will replace the air inside...so you get less humidity too. WAY less humidity.

    Alex
    Everything is explainable. The seemingly unexplainable is but a result of our insufficient knowledge.- Hans Brewer

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    Capensis's Avatar
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    Will, I don't have any room for a small fan for my tank. I don't think I can get one anyways. I was just wondering if I could rely on my ceiling fan to give my tank circulation :P.
    http://www.terraforums.com/forums/image.php?type=sigpic&userid=6789&dateline=1352508752

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    Nepenthes Specialist nepenthes gracilis's Avatar
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    Usually, you want to exchange air. So....way less humidity isn't necessarily a bad thing. I would set a fan as an exhauster, to pull hot, stagnant air out and refresh with outside air. Ever wonder why some plants may not do well and fungus appears? Its all about the air mon ami! All of my Nepenthes in my terrarium when i first started out where...OK but after I added an exhaust fan, what a difference! Plus, the humidity won't drop to like 30% anyways, the terrarium is an enclosure with moisture and plants in it, so the relative humidity should be fine. Nothing like WAY less humidity...

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    Av8tor1's Avatar
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    Did someone say "Bernoulli" (ears perk up)


    Ill let Julius Sumner Miller handle this one: http://youtube.com/results?search_qu...i&search_type=

    hey it was the million dollar question on you want to be a millionare one night, omg I was bounching up and down screaming at the tele... sheesh, someone just offer me a million to explain why curve balls curve

    ugh


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