running case fans not within a computer

original.wood

original.wood

original.wood

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17 Mar 2009
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311
Location
Manchester
Hi, i've been thinking about this for a while but i dont have the know how to implement it.

i keep reptiles and they are kept within vivariums (wooden boxes with glass fronts as doors)

ventilation isnt too great within them, as air is always static.

i had an idea of using case fans in a push/pull config either end of the vivarium.

i would use 2x 120mm fans, 1 in the cold end and 1 in the hot end, to circulate new air.

how could i use the 3pin case fans, perhaps even attached to a fan controller using mains electricity?
 
It possible but you would obviously need to drop the voltage to 12v ~, or buy a cheap psu and link the fans to that.

Alternate you can buy 240v versions on the net.

Hope the above gives a bit of a idea.
 
I thought the idea was to keep them in a warm environment, not push cool air through.....Do the Pet Shops give this advice?
 
120mm fans would move far too much air i would have thought (all you really need is a general air movement).

Something like a single quiet/low airflow 80mm fan connected to a variable voltage mains adaptor set to say 7v would probably be more than adiquate.
Remember fan grills and to put the fans well out of the reach of the beasties.

I suspect there will also be proper units on the market if it is a problem.
 
they're heated on a thermostat, so regardless of 'cool' air going in the thermostat should keep them heated to 90F.

yeah i just figured a slow moving 120mm fan would move a fair bit of air.



in order to use a desk fan or something similar, the glass doors would have to open, hence the reptiles being able to get out.

i will look for the 240v ones available online, but will look in to a variable voltage mains adaptor, the fans would have been positioned at the top of the enclosures, (12" high and covered, aswell as being set in to the wooden vivarium which is 12mm thick)


the reason i ask this is we're due a heatwave next week or two, and it was just an idea.

thanks everyone.
 
BTW make sure you use a DC Power supply not AC otherwise your fans will not work :/ what I would reccomend is using an old psu u have running around and just short the green with a black wire to start it off and just hook up the fans you need... Cant get any easier than that :)
 
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