I would stick with water. it is cheap and has very high specific heat. It is really hard to beat water.
I had a water cooling system used to cool the hot side of a thermoelectric module. I used an old 50-gallon aquarium tank as the reservoir and for a pump, I used an aquarium cartridge filter as the pump. I figured that anything coming out of that filter was only a few microns across and would not harm the chiller. Even if the tank filled with green algae none of it would get in the chiller. The water actually remained clear for months. I thought about putting goldfish in the tank. Put then I'd have to maintain the filter more. I really do recommend using a filter. But a big size pleated paper cartridge sized so it can last over a year or two. The tank stays clean Why 50 gallons? I wanted the water temperature to remain constant or at least not change too quickly as the chiller used a PI control loop that assumed a near-constant water temperature. In a recirculating system you have to look at how many watts are being dumped into theater and how fast the tank water heats. This system was designed to run s 8 hours at a time. It would gain only a few degrees in that time Looking back on this project, others with similar equipment just used an "open-loop" system of tap water. The water came out of the tap through the machine then into the flower bed outdoors. The flow rate is low enough in a cooling system not to worry about saving water. On Sun, Jan 16, 2022 at 2:08 PM andy pugh <bodge...@gmail.com> wrote: > On Sun, 16 Jan 2022 at 21:44, gene heskett <ghesk...@shentel.net> wrote: > > > I first started out with rv antifreeze, but it spoiled and jelled solid > > I think I would be tempted to try the waterless coolant that they sell > for cars, though that would depend on how much was needed. It's not > cheap. > > https://motocrossactionmag.com/ten-things-you-need-to-know-about-waterless-coolant/ > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
