Chilling several rez

mcnasty_nug

mcnasty_nug

Well-Known Member
@Airwalker16 I appreciate you finding that deal, but I don't have the money to buy anything until later in the week anyway. I forgot about amazon warehouse, I'll keep my eyes peeled for another deal like that on there. The penguin does ship free at least.

Otherwise i might try the glycol chiller to do this. I emailed the place and they couldn't really give me a direct yes or no on if a 1/2 hp would be able to keep all the rez cool with the heat exchanger method. He did confirm the glycol chiller can get colder more efficiently, especially in the mid 60s Id need it at.


I just hope its big enough to keep everything cool. I have to imagine it can drop it down to 70 at least.

Thanks again for all the info, I'll report back on how it works.
 
J

JoelK

New Member
New to this site, But I am a HVAC contractor and i work with chilled water a lot. My thoughts. And this is just what I will be doing before next summer.

Get the biggest chiller you can afford. ( you may need to do a little math. It is btu content not water flow. temp of res vs temp of chilled water) Build a coil out of pex, or stainless tubing which is a better choice but costs more., several loops bring both the in and out of the tubing out side your res. Put quick connect fittings on each. similar to what is used on compressed air but for water use. Run from your chiller output to one side of the coil in the res, the other side of the res back to the input of the chiller. this makes one simple circuit of chilled water that runs through the coils in the res. it is a simple recirculating system. You can split the lines (parallel) and do multiple res at once. Just pipe it as first in last out. That way each res gets the same water temp entering it. You can manually disconnect at quick connects or even install ball valves. The chiller will run until the temp difference is at set point. If you want to get automated, you can put a sensor and stat in each res., and a electric ball valve. This will allow it to open and close on a set temp parameter. If some one is interested I can draw out a wiring diagram that would do this that is a low cost vs fully automated controller what can run thousands. One other thought. you can run another coil and loop to your RO water tank to get that temp down also. All off the same chiller.
 
ttystikk

ttystikk

Well-Known Member
JoelK said:
New to this site, But I am a HVAC contractor and i work with chilled water a lot. My thoughts. And this is just what I will be doing before next summer.

Get the biggest chiller you can afford. ( you may need to do a little math. It is btu content not water flow. temp of res vs temp of chilled water) Build a coil out of pex, or stainless tubing which is a better choice but costs more., several loops bring both the in and out of the tubing out side your res. Put quick connect fittings on each. similar to what is used on compressed air but for water use. Run from your chiller output to one side of the coil in the res, the other side of the res back to the input of the chiller. this makes one simple circuit of chilled water that runs through the coils in the res. it is a simple recirculating system. You can split the lines (parallel) and do multiple res at once. Just pipe it as first in last out. That way each res gets the same water temp entering it. You can manually disconnect at quick connects or even install ball valves. The chiller will run until the temp difference is at set point. If you want to get automated, you can put a sensor and stat in each res., and a electric ball valve. This will allow it to open and close on a set temp parameter. If some one is interested I can draw out a wiring diagram that would do this that is a low cost vs fully automated controller what can run thousands. One other thought. you can run another coil and loop to your RO water tank to get that temp down also. All off the same chiller.
Click to expand...
You definitely know what you're talking about, therefore you don't belong here.

:bigjoint:
 
Big Perm

Big Perm

Well-Known Member
You could set your rez's in a tent or another room, or space and a/c it for the price of a chiller, or multiple chillers.
You could also get 1 big chiller and make 2 simple manifolds a supply and a return. Plumb them to your chiller. Then run a closed loop with like 50 feet of tubing coiled up in each rez tank and just run water in the chiller to cool the rez water.
You can also make a chiller out of a deep freezer.
 
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Keesje

Keesje

Well-Known Member
When you have 1 bigger chiller for several reservoirs, how do you control each reservoir separate?
 
ttystikk

ttystikk

Well-Known Member
Keesje said:
When you have 1 bigger chiller for several reservoirs, how do you control each reservoir separate?
Click to expand...
First, why would you want to? Attend you trying to keep all your systems at the same temperature anyway?

Second, just put an inline valve upstream of your heat exchange coil on each system. Then you can shut it off for repairs or portion flow if you really need to.
 
ttystikk

ttystikk

Well-Known Member
rkymtnman said:
not stainless. that's why i'm surprised tty uses copper. that and nute solution (from what i've read) is a no -no.
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Only a problem if your pH is way, way too low, which point you have more immediate problems.

The roots won't grow in the control bucket with the copper coil in it but other than that it's fine. I wouldn't put a plant in my control bucket anyway because then roots would clog the pump I keep in there.
 
Renfro

Renfro

Well-Known Member
A solenoid valve could be used on each coil and turn on and off that coil as temps change.
 
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