Sub 300$ 600Watt Water Cooled Build Ideas Opinions Needed.

A

aids asaurus

New Member
Wanting to build a water-cooled low profile ceiling mounted light using cheap aluminum CPU water blocks and CPU radiators. Also, did I mention I'm powering it all with an 850-watt switch mode power supply using an array of 150watt dc-dc step-up boost converters. They're cheap so I'll be running 2 in parallel per light so that they can split the thermal load.

This build is not designed around efficiency, so much as par per dollar relative to the extra supplies I currently have at home. My questions are:

Whats the meaning of life?

Your Opinion of The Best Cob for This situation?

Why don't more people watercool their lights?

90cri vs 80cri, 90s have higher 600+nm spectrum. Would this facilitate the Emerson effect without buying 660nm secondary side lighting? Or do you think the loss in efficiency of deep red leds photon inefficiency would outweigh the added effects of the deeper red spectrum helping the plant through the Emerson effect.
 
CobKits

CobKits

Well-Known Member
i dont know what driver you are looking at but if you link it i will give you my opinion.

most standard power supplies are in the 80s and if youre doubling up with another boost converter you may be in the 70s
 
CobKits

CobKits

Well-Known Member
citi 1216 would be a good match for that.

at 50W/chip you could watercool it if you want

id prob elect a foolproof passive cooler over a waterblock setup that would cook you chips if the pump fails
 
S

Schalalala

Active Member
1) V22C 3000K leds from Bridgelux. Check digikey.
2) Because it is a lot more complicated than just buy a huge heatsink and call it a day. But yeah, watercooling has loads of advantages, the biggest is,that you can remove the heat outside of your tent (if you live in a warm climate!)
3) CRI 80 + Far Red LEDs (sleep light) if you want to experiment a bit.
4) A plant has two photosystems. One has the absorption maximum at 700 nm, and one at 680 nm. As one system boosts the other system, the highest photosynthesis rate is seen, when BOTH systems work. That's all the Emerson effect is. Two seperate systems, which work best together. What people tent not to understand is that photosynthesis is a photon-based process. Each system need a photon with AT LEAST 680 nm to work. Photons above 700 nm are simply not strong enough. The shorter the wavelength, the higher is the energy. Therefore will a green photon (which has a lot more energy than a deep red photon) drive photosynthesis just as good as a red photon. The surplus of energy will get dissipated as heat.

So, whats our goal then? Supply the highest count of photons, with AT LEAST 680 nm.
 
swedsteven

swedsteven

Well-Known Member
CobKits said:
citi 1216 would be a good match for that.

at 50W/chip you could watercool it if you want

id prob elect a foolproof passive cooler over a waterblock setup that would cook you chips if the pump fails
Click to expand...
I use 1212 cob on this one with small heat sink and small fan
 
CobKits

CobKits

Well-Known Member
yeah he mentioned that but there are no details given on voltage and current specs so i cant make a rec on that

im going off the pic he posted of the little led driver. 1216 best for for that
 
SSGrower

SSGrower

Well-Known Member
CobKits said:
yeah he mentioned that but there are no details given on voltage and current specs so i cant make a rec on that

im going off the pic he posted of the little led driver. 1216 best for for that
Click to expand...
Yeah, I saw that but poster was different.

You know much more about drivers than I do, In fact you have likely forgotten more than I will ever know about LED lights.

This one could run at 200W it is cooled by a swiftec 220 , I run it at 60-80 watts with uv and red.
20180206_134359.jpg
 
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swedsteven

swedsteven

Well-Known Member
20180211_094938.jpg 20180211_103210.jpg
CobKits said:
1212 is a shade over 36V at 1.5A. it would work but maybe not at 1.5A
Click to expand...
It did work driver maximum current for a 1212 is 2760ma my driver is 1500ma 1.5 amp 50watts
2 × 300watts hack fixture cover 4' × 3.5' coverage
20180211_132035.jpg
After tweakin
20180211_133729.jpg
50 000 lux middle 20 000lux corner
 
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SSGrower

SSGrower

Well-Known Member
canadian1969 said:
I should have said
"we have got to think about better ways to wire cobs, lol"
Click to expand...
I should have spent more time on the layout. In my defense the reds and uvs were not planned for originally. But yeah, it aint pretty.
Hard to use a holder on a thin aluminum cooling block. Plus I stopped using them after jabbing a screwdriver into the cob for a second time.
 
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