aSilvrHaze
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If you set as said not much difference adding a dual stage. Just loop thru both and back to Rez. The first one is stage one. The second compressor kicks in when needed if set a few degrees above stage 1.
I had to because of stock didn't have but 2 degrees swing. On n off every few minutes for only a few. Lots of startup amps add up! Now 6 degree swing and start up down to 3 to 5 times a hour for 4 to 7 min run time.
After giving it some thought- and discovering a bit of a gift from the shop!- I would prefer to run one Ranco or one controller and have both chillers run on the same cycle.
Another bonus is that if each chiller is on a different side of the house yet runs at the same time, no one need catch on that there are two- the noise of the one covers the other!
OK Ty, I've been obsessing on this thread for a few days and I think the addition of a cooling tower could save you a bunch of power. The way you have your system set up, you could add the benefit of evaporative cooling while keeping your system topped off with your city water. I am trying to wrap my mind around a hybrid system of evaporative cooled air and water cooled air after rh is reached and for cooling one or two lights, 1200W max. My room is unusable save for CFLs lately because I'm too cheap to run A/C that I don"t have. I'm going to get off my ass this weekend and start getting some cheap environmental upgrades. This is a great thread.
Is there any way to determine the cooling BTU capacity of heat exchangers, like the ice box? Somewhere I remember reading a figure around 6,000BTUs, but I'm not sure for which size that was. I recently found a couple of water-to-air heat exchangers on ebay, 12" link & 8" link. They're used to heat air using hot water and are rated at 26k BTUs for the 8" and 50k BTUs for the 12". I'm assuming these numbers would change quite a bit going from heating to cooling, but I really don't know....
Also I think those heat ex changers are thick for the btu rating. Check for air flow rate. They don't need air flow as much for heat gain if convection is available. Like a wort chiller, it works more on convection.
Hydro innovations are 1" thick his link is 3" thick. I got the 8" ice box exchangers without the plastic shroud from H.I. off ebay. I made a double exchanger now 2" thick and it works well. Take 2 ice boxes with water and air ran inline. Should help you for now.
hey tty, just got a quick question for ya. I'm sure it's been posted but i can't find it. I'm wanting to run 2-4 systems off of one chiller (not big systems). could you point me in the right direction for the solenoid valves and temp controller i would need to run the cool coils? and also, I'm sure I'm going to have to upgrade but i have a 1/4 hp chiller. how many gallons do you think i could effectively cool with the cool coils and that chiller? everything is over insulated and in a sealed room so the chiller shouldn't need to try and keep up with that. thanks a bunch
The secret is to run the chiller at the target temp you want your RDWC systems at, or a couple degrees below. This way, no temperature control is needed! This for me is right about 60 F, so set the chiller for 55, and the RDWC runs at 63 or so.
thanks man i was thinking to deep into it, like solenoid valves to regulate water flow to each system. u made my life easy
Damn right I did! You're welcome!
ttystikk
Do you run straight water in your water cooled system, or a 50% propylene glycol 50% water mix?
Does anyone know of a cheap source for propylene glycol?
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