Saturday, Oct 09, 2004 at 21:41
I've only recently come across the above type air cooling system. think coleman have one as
well. They are not "evaporative coolers" which do raise the humidity, they actually use the frozen fully enclosed tubes or whatever to cool the air before expelling it, there is therefore no disbursement of moisture. Compressor type air con units and fridges use gas disbursed through cooling fins over which air passes to cool the air. The above are just rudimentary versions, but use air passing over frozen containers to achieve the same affect (with terrible efficiency ratios). I am thinking of it cause if brissy hits 40C days again and the power goes out it might useful to cool down my new bub a bit - at least down to the requisite 36C.
I had an evaporative cooler and found it did raise the humidity to a terrible extent so i gave it away and bought a true air con, but these don't work so
well when the power goes. They have nothing in common with the above units. Though the Coleman unit i think runs a tube through an esky full of ice with a fan extracting it (or blowing it) through the tube in the esky so air cooled by the cold tubes comes out the other end into the hot space - like an air con core really.
So i am gonna dig out an esky, buy some copper tubing, get some sort of extractor 12v fan - tube exits into box with fan inside and to outside, or the other way round. See how i go, if it fails i might buy one of these units and take it apart.
oh, and i'm not an air conditioner engineer or fridge mechanic so any comment welcome, i could be wrong after all.
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