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Has going water cooled saved you any cash on your electricity bill?

rr14

Member
Hi guys. I'm wondering if any of you have saved any cash by switching to a water cooled setup instead of using ac primarily. I know that chillers are more efficient than ac at taking out the heat. I have a setup but haven't set it up yet. I'm still running ac.
 
M

mrred

i wasnt aware they even could save electricity, youre just transfering the heat, and your adding anothing thing to plug into the wall
 

stoneroad

Member
go do some math and get back to us seriously. throw us some numbers to crunch i have no idea if you even have a plant going or forest so let me know what size room how many watts for lights and other junk think real careful then repost with some data for me.

thanks rr14 in advance
 

Lazyman

Overkill is under-rated.
Veteran
Hey Stoneroad, I'm looking into water cooling with chillers and a heat exchanger as well, can you tell me what you think of this?

2HP chiller, outside in the shade
55 gallon reservoir, outside next to chiller, with submersible 1KGPH pump
Feeds to either an aluminum car radiator (30X19X3") with a Vortex in a box, OR
A commercial 3 fan/3 core heat exahcnger.

I figure the chiller pulls fewer amps than a 24K btu mini split, and in the winter the cold water will stay cold outside (it never snows here) so the chiller won't run for several months.

I use a 30X20 outbuilding, it rarely goes over 85* in there but on very hot days it has gotten to 90*, for a few hours anyway. I have two 12" vortex on exhaust and a motorized intake shutter that work pretty well, but extra cooling would be a big help, and with water cooled I don't need to have an HVAC guy come to my place at all. Oh, and I run 8KW but only at night, I don't aircool my hoods even because even with 8 lights on it stays under 75 at night, I just need daytime cooling.
 

geopolitical

Vladimir Demikhov Fanboy
Veteran
Yes. My bill has dropped approximately $35/mo in summer with a pretty crap setup. I use well water to cool it and the system runs to waste so it takes very VERY little energy to run.
 

Lazyman

Overkill is under-rated.
Veteran
Hey Geopolitical, thanks for posting, what do you use indoors for the heat exchanger?
 

MMAJAY

Member
I thought about setting a friends indoor up with chillers but i was thinking that it might drive the humidity up to high. The reason i say this is at work we have them and the humidity is very dificult to maintain. Correct me if i am wrong and i might reconsider useing one instead of A.C..
 

Lazyman

Overkill is under-rated.
Veteran
No, a chiller is different than a swamp cooler, a water chiller refrigerates the water, no evaporative cooling involved at all, so no humidity issues. You just have to pump the water through a heat exchanger to get the cold air off it, basically like the opposite of how cars/radiators work, cold instead of heat.)
 

Lazyman

Overkill is under-rated.
Veteran
Oh, or check out http://www.coolerado.com for a 6-ton AC that uses only 600 watts, and can run on solar panels! THAT one is a fancy evaporative cooler, but since its fancy it doesn't raise humidity.
 

Feijao

Active member
Any idea on what those coolerado usints run? I read a lot about them but couldnt find any prices, looks amazing though.
 

Lazyman

Overkill is under-rated.
Veteran
No Idea, I want one though! I can't imagine they can be SUPER expensive, they have no compressor and only two moving parts! I bet that solar rig is expensive though, but if I had to guess I'd say the coolerado is probably about $3-4K.
 

Feijao

Active member
You would save that in electricity in no time especially if you are being raped monthly by PG&E. How many lights and in what size room would a 6 unit handle?
 

Lazyman

Overkill is under-rated.
Veteran
I just emailed blue star air for a price, I doubt they'll give me one but you never know. I think the M50 will be a little cheaper, it's a 5-ton instead of the 6-ton C60. If they're super expensive I'll just make my own out of the chiller/radiator combo above I think.
 

Lazyman

Overkill is under-rated.
Veteran
Well 5 tons is 60000 BTU, and we figure 4K BTU per light, so uh, 15 lights for the M50, 18 lights for the C60 sounds right.
 

Lazyman

Overkill is under-rated.
Veteran
Hehe, I just had a thought, it gets cold here in the winter, I wonder if I could run the hot water discharge from a HyDroGen water-cooled CO2 generator into this in winter to add some heat back? Hmmm...
 
Oh, or check out http://www.coolerado.com for a 6-ton AC that uses only 600 watts, and can run on solar panels! THAT one is a fancy evaporative cooler, but since its fancy it doesn't raise humidity.

from a quick review i dont think you can use the coolerados in a sealed room. they say they do not recirculate the air as one of their benefits but thats not good for growers. if the coolerado is exchanging inside and outside air you are back at the same problem of exhausting co2 and stink. if thats correct they are almost useless for growing applications.... i mean the whole point of A/c is to run a sealed room right? if you arent going sealed why wouldnt you just run lots of exhaust and intake, save money and electricity.


also some of you are calling water cooled heat exchangers aka chillers (ie. 3 fan chiller) swamp coolers. im not certain but i dont think they are the same thing.
 

geopolitical

Vladimir Demikhov Fanboy
Veteran
Hey Geopolitical, thanks for posting, what do you use indoors for the heat exchanger?


I have a double layer Dynatron copper based heat exchanger that i run well water through at a fairly slow rate. The input water is around 38F, the water output is a few degrees higher. The unit is sized for two 120mm or 4" fans (two mounting hole sets). This has dropped the duration that my AC unit runs fairly dramatically.

One caveat, at the temperatures of my input water I get some pretty serious condensation. I keep a fairly deep drip pan under the unit and dump it once a week or so.
 

rr14

Member
I wish I had 38* water to use run to waste! My water out of the faucet here is 60* at least.

In this months urban grower, they're starting to advertise water cooled packages up to 2 hp which is good for 6 1000's according to them.

Using the hydrogen to warm up your room is definately possible during lights on. The discharge water is hot. This would be true especially if you have a big room.
 

Lazyman

Overkill is under-rated.
Veteran
from a quick review i dont think you can use the coolerados in a sealed room. they say they do not recirculate the air as one of their benefits but thats not good for growers. if the coolerado is exchanging inside and outside air you are back at the same problem of exhausting co2 and stink. if thats correct they are almost useless for growing applications.... i mean the whole point of A/c is to run a sealed room right? if you arent going sealed why wouldnt you just run lots of exhaust and intake, save money and electricity.


also some of you are calling water cooled heat exchangers aka chillers (ie. 3 fan chiller) swamp coolers. im not certain but i dont think they are the same thing.

I think the idea with the Coolerado would be to put it outside your room, like a chiller, and blow the cold air in. This will dilute the CO2 in the room a bit, but would still have no exhaust (or need for it.) Just pumping in cold air from outside, just takes a hole in the wall/window board etc and some creative camouflage. It would probably work well in my situation, but definitely not for everyone. The guy from Blue star emailed and asked where I live, but he's making me a quote! woot!
 

Lazyman

Overkill is under-rated.
Veteran
I wish I had 38* water to use run to waste! My water out of the faucet here is 60* at least.

In this months urban grower, they're starting to advertise water cooled packages up to 2 hp which is good for 6 1000's according to them.

Using the hydrogen to warm up your room is definately possible during lights on. The discharge water is hot. This would be true especially if you have a big room.

Yeah I saw that, using a bunch of Ice BOxes. I think I'd rather have one big heat exchanger instead of 6 small ones, lots less plumbing and hassle that way.

Geo, where did you find your exchangers and how do you size them for a specific application? Is there a calculator that shows water temp vs. BTU of an exchanger?
 
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