You gonna be filling guns directly or tanks?If just guns you don't need to do all that.. short runs to fill guns don't really heat up the water or compressor too much. My YH heats to 111*ish for a fill then cools to ambient temps between fills. I just leave the pump running for entire shooting session.
So, what is your end game for the cooling?Cooling the compressor or cooling the outlet air to reduce condensation?I have the Omega air charger, it is liquid cooled. I am looking to upgrade the cooling system as well. Going to upgrade the pump and add a pelter heat exchanger. Then put a filter/dryer on the intake. The parts should be here on Friday.
Lets break down a YH in parts.A YH consumes roughly 1800W@ 1/3'rd is used to copress air into the tank (work).@ 1/3'rd go into heating the air going into the tank (waste).The remaning @ 1/3'rd is wasted heat from the motor and the outside of the compressor.So what you are up against is depletion of some 600Watts of heat (not counting the "waste" heat which will dessipate from the tank given time (seen as loss of actual pressure).Next is determing coolant threashold.If ample flow then coolant should 'nt rise more than 3-5degC.Now if you combine 2x3 fan or 3x2 fan PC radiators then you should be pretty much golden!The icewater is a crutch for lazy people, and a easy way out!
The water in the fridge was just to keep from buying ice all the time.
I got a higher flow rate pump and stuck it in my toilet tank, and ran the output from the compressor through the overflow tube in the tank, I can top off (@2000-4500) both my 88 cu ft. tanks without the head temp going over 41c. my house water pump runs a bit every so often, but I'm ok with that.