Lighting liquid cooled cobs.....

[NastyN8t]

I built these year and a half ago. Used the Chinese cobs for testing then added crees on one. Worked awesome!!!

If anyone is interested in liquid cooled bars blocks etc let me know I can show them how to custom build them at reasonable prices.

 

[NastyN8t]

 

[NastyN8t]

First upload lol

 

[dankle]

Nice! Was playing with the idea of liquid cobs when I first started learning about them. Literally was thinking earlier about how cool it would be to have multiple connected on one waterbar.

sounds very interesting, how much heat does one of those dissipate?

 

[NastyN8t]

As much heat as u want depending on the cooling system you build. I had a heater core for a car with a small fan , a 5 gallon bucket and fountain pump in a closet outside my garden. It cooled 525w of actual draw worth of cobs with ease. I ran it 24/7 for 70 days

 

[BigSm0]

Pretty rad. I do like water cooling and my next light will absolutely be done this way too. It will be large scale though. 30-40 cobs

 

[NastyN8t]

there are a handful of extruded aluminum options at a vendor near me. These are 3ft long 2 1/2 inches square. I can literally buy 10-20ft lengths buy the pound. I have a tig welder and pipe taps. ill probably opt for weld in bungs on my next builds,half inch plate is hard to tap and weld......

 

[NastyN8t]

My first water cooled cob array was done with a chunk of billet aluminum. With channels drilled laterally under each cob. It was a functional monstrosity of plumbing, then I got a tig welder....

 

[NastyN8t]

These have 17 between them but only 600- 720w rms.30-40 on 4x4ft tubes would be easy.

I've thought of sandwiching peltier cooling between the cob and cooling tubes for unsurpassed efficiency.the draw back being more heat and electrical draw on the set up overall.

Either way watercooled will easily out perform any aircooled set up and it remotes the dissipated heat to a desired location with readily available plumbing pieces!
I'm planning on eventually prototyping water blocks purpose built for cob grow lighting with parabolic reflectors and varifocal lenses. I'll have them cast and machined to fit common Cree,Vero,citizen etc holders.......that's the dream anyways....

 

[dankle]

thanks for this I've been looking into this more. the aluminum bars are surprisingly affordable, like $10 for 2"x1"x36"

I don't have welding equipment but I think I can shrink some plastic or rig up some connectors for the tubing

designed a dual bar for 2'x4' 1344 PPF for under $600