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Thread: DIY Ghetto-Fab Chiller under $20

  1. #31
    420 Member crypiter's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    thanks for the idea. im gonna try this over the weekend.

  2. #32
    420 Member of the Month October 2010 & September 2017 TorturedSoul's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    I am starting to worry that there might be some affect of Cu lines running through a reservoir full of nutrients - would a transfer of Cu molecules happen over time and if so would it be in quantities minute enough to not be an issue?

    I've been thinking off and on about the Fresca Sol light setup that WheeloFortune has. I believe he stated that his light reservoir & cooler has plenty of capacity. Maybe for those who need to cool their nutrient reservoir a liquid-cooled light setup might be the way to go in order to stone two birds with one kill.

    I know that as the size of the cooling reservoir increases it is able to take more heat into itself before its temperature is increased to the point where a "chiller" is required. I wonder if there is a handy formula that you can plug in the numbers for reservoir size, ambient temperature, and heat rise over x amount of hours and be able to figure out how many hours it would take for the reservoir to to return to ambient - so you could figure out whether a given size would (a) be large enough to cool one's setup without a chiller and (b) if it would have time to return to ambient temperature during the "night" period.

    If a person could be assured that they could cool both their light and their nutrient reservoir from one cooling reservoir without having to artificially cool it - and to do so consistently day after day - then it would be a quiet and efficient setup indeed.
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  3. #33
    420 Member Munki's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    Quote Originally Posted by TorturedSoul View Post
    I am starting to worry that there might be some affect of Cu lines running through a reservoir full of nutrients - would a transfer of Cu molecules happen over time and if so would it be in quantities minute enough to not be an issue?

    I've been thinking off and on about the Fresca Sol light setup that WheeloFortune has. I believe he stated that his light reservoir & cooler has plenty of capacity. Maybe for those who need to cool their nutrient reservoir a liquid-cooled light setup might be the way to go in order to stone two birds with one kill.

    I know that as the size of the cooling reservoir increases it is able to take more heat into itself before its temperature is increased to the point where a "chiller" is required. I wonder if there is a handy formula that you can plug in the numbers for reservoir size, ambient temperature, and heat rise over x amount of hours and be able to figure out how many hours it would take for the reservoir to to return to ambient - so you could figure out whether a given size would (a) be large enough to cool one's setup without a chiller and (b) if it would have time to return to ambient temperature during the "night" period.

    If a person could be assured that they could cool both their light and their nutrient reservoir from one cooling reservoir without having to artificially cool it - and to do so consistently day after day - then it would be a quiet and efficient setup indeed.
    You can bring down the temps in a cooling loop only as far as the ambient (surrounding) temperature unless using an active cooling tool like an air conditioner or refrigerator. However, we can use many things as heat sinks that can quickly absorb heat from a concentrated source and diffuse that waste heat to a larger heat well. Computer overclocking has put much thought into this subject so I encourage all interested to read what is out there in the internet about water cooling computers.

    In my reading, I have seen some novel solutions to this common problem. In one, a person ran about 1 hundred feet of copper pipe in or on top of the concrete slab in their garage. Since that was in contact with the earth, the heat would dump into the slab and ground bringing the cooling loop close to that temp. Feel your garage floor as see how cool it feels even in the summer. Another solution I saw used in England was a large compressed gas canister was buried into the ground just outside this guy's house. Water is run into and out of that canister and the heat is dissipated into the earth. He stated the earth there was always in the mid 40s degrees F so that solution worked well.

    So, look around your grow area including below you. The solution could be right in front of you.
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  4. #34
    420 Member of the Month October 2010 & September 2017 TorturedSoul's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    Quote Originally Posted by Munki View Post
    You can bring down the temps in a cooling loop only as far as the ambient (surrounding) temperature unless using an active cooling tool like an air conditioner or refrigerator.
    Yeah, I sometimes forget that not everyone's house is sitting on a basement. Was assuming an ambient temperature somewhere in the 50s(F). Oops.

    Quote Originally Posted by Munki View Post
    In my reading, I have seen some novel solutions to this common problem. In one, a person ran about 1 hundred feet of copper pipe in or on top of the concrete slab in their garage. Since that was in contact with the earth, the heat would dump into the slab and ground bringing the cooling loop close to that temp.
    I'd have placed it in the ground instead of on top of it - and below the frost line.

    Oh yeah, now I'm forgetting that not everyone's house is sitting in an area that has a Winter.

    Come to think of it... Everyone DOES live in a house, right?

    J/K lol.

    Everyone's situation is different. Was working outside yesterday and a buddy called from across town wanting to know what I was doing since it was pouring down rain. I looked up to see sunshine. And that was only a few miles.

    Speaking of work... Time to fly.
    Respectfully,
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    Among other evils which being unarmed brings you, it causes you to be despised. -Niccolo Machiavelli

    Three may keep a secret, if two of them are dead. -Benjamin Franklin, Poor Richard's Almanac

    If you ever loved anything in your life, try to remember it. If you ever betrayed anything, pretend for a moment that you have been forgiven. If you ever feared anything, pretend for an instant that those days are gone and will never return. Buy the lie and hold to it for as long as you can. Press your familiar, whatever its name, to your breast and stroke it till it purrs. -Roger Zelazny, Creatures of Light and Darkness


  5. #35
    420 Member Jocko's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    It would add to the cost but a coil of copper tubing would be far more efficient than the plastic tubing. I've been making beer for many years. "Wort Chillers" are expensive (60-$200) but are extremely efficient heat transfer units. They could easily be incorporated into this design.

  6. #36
    420 Member Munki's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    Quote Originally Posted by Jocko View Post
    It would add to the cost but a coil of copper tubing would be far more efficient than the plastic tubing. I've been making beer for many years. "Wort Chillers" are expensive (60-$200) but are extremely efficient heat transfer units. They could easily be incorporated into this design.
    You are most definitely correct on the efficiency improvements but that does increase the cost significantly and there are concerns the nutrients would possibly react to the copper tubing or leach copper from the tubing negatively affecting the nutrient availability or poisoning the plants with elevated copper levels.

    There are more complicated water cooling setups that can help but then you might as well as buy a real water chiller.
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  7. #37
    420 Member Jocko's Avatar
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    Re: DIY Ghetto-Fab Chiller under $20

    Munki

    Thanks for the quick followup. In thinking about it, you're quite right. When I use my chiller on "wert" plain water runs in chilling coils although it sits in the boiled malt and hop mixture.

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