||07-15-2013 04:30 PM
I use a 25' 3/8" immersion chiller. Temperature variation is unmeasurable, within .1° C, as measured with a thermowell. I use 4 liters of frozen water bottles every 12 hours.
I call it a water cooled fermentor, not a swamp cooler. Mine is a thermostatically controlled ice cooled waterbath. Its a closed system, no evaporation, No swamp involved.
Yeah, I agree, forget the salt. It will lower your freezing point a little, but we dont care about that. Its the large amount of heat required to melt ice that makes it work.
What Ryush806 said is exactly right.
As far as the wet t-shirt method (an actual swamp cooler) it doesnt work for me. You need low humidity for that.
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