copper T ______________________________________ copper T end+-----------+ clamp Garden Hose clamp +-----------+end ===============<<<<==copper=tubing=<<<=wort=flow=direction=<<<============ cap+--+ +--+______________________________________+--+ +--+cap | | | | + + + + | clamp | | clamp | | | | | Hose end in Hose end out
To sanitize, I siphon iodophor solution through the chiller into the carboy. To start the siphon, put a female garden hose to 3/8" hose barb fitting on the "out" end and attach it to a water source, Place the "racking cane" into a bucket filled with sanitizer. Then run the water until all the air is removed from the system, disconnect the water source, and place the "out end" lower than the "in end" immersed in sanitizer. I use this same method to start the siphon from the hot wort (remember not to blow bubbles into the hot wort though).
This design works very well. I was able to drop boiling wort to within 5 degrees F of the tap water temperature. I found three drawbacks: 1) The flow is very slow. It took about 20 minutes to siphon 5 gallons through the system. 2) a fair amount of wort is left in the tubing then the siphon quits. 3) a fair amount of wort is left amongst the hops in the bottom of the brew kettle. I have a small food grade pump which I may attach to the outflow of the chiller next time I use it, which should solve #1 & #2 and help #3.
I may also add another, bare copper coil between the outflow of the CF chiller and the carboy. This coil will be immersed in a small ice bucket. This will minimize the amount of ice needed, and get that final, desireable drop in temperature.
Andrew Lynch, firstname.lastname@example.org