I got his Water Chilling foutain that my hommie hooked me up and its all dialed in for this shit.
The coil system is very good. The inside coil was formed into a u that fits the outside one perfectly and w/ no Resivior the superchilled coolant goes stright to the water blocks.
I showed him this thread and he says some of this info doesnt sound right.
First he thinks propane is no good for refreidgerent. The refridgerent gets compressed to 300psi and propane is already highly combustible.
There is a type that uses mostly propane, but its not as good. R134 and MP?? are used more often the R12 for envirornment and price issues and are just as good.
Using cheap auto tranny coolers for condensors is a bad idea because they arnt as thick and arnt made to handle high pressures.
Thermal expansion valves need to be dialed in w/ all the different variables involved.
He also thinks some of your homemade systems probably arnt setup right or at least optimally. They have to basicly be designed so that all the parts fit each other. Its best to start w/ a system thats already designed and dialed in (freezers,water chillers, ...). And then have a professional tune it up for what you want to do w/ it. He checked mine for leaks, vacume pumped out everything, and filled it w/ R134 (which it was designed for) to the right pressure which determines the desired tempature. Less pressure gets coolder, but only to a point.
He wants me to try a distilled water w/ a lil bleach (and antifreeze if I need it) instead of a alcohol/methanol and water mixture. Water is a good heat transporter and its not flamible. So Ill try that first and then compare the temps to a 60 Isoproply/40 h2o mixture.
There was a lot more, but I cant remember it all.
I hope this info helps some of you out. GL!