Water cooled COB Build/pic heavy

[Godfather420]

id like to see some par readings at different water temps. is that possible?

But yes it is absolutely possible and will be doing to help contribute. : )

 

[Godfather420]

If youre using chilled water are the fans even necessary? Or worse yet possibly counter productive?

In my opinion, ditch the fans on the mounts. They could be used far more efficiently elsewhere in the setup.

The fans are to regulate temp inside the room... and to keep the condensation to 0 inside the fixture when the light is turned off. I wanted to be able to have a differential in my day/night temps and control of it. Summer air temps and dehumidification add heat load to sealed environments. This system handles those loads and maintains homeostasis.

 

[Shugglet]

The fans are to regulate temp inside the room... and to keep the condensation to 0 inside the fixture when the light is turned off. I wanted to be able to have a differential in my day/night temps and control of it. Summer air temps and dehumidification add heat load to sealed environments. This system handles those loads and maintains homeostasis.

Very nice way to solve several problems, kudos.

 

[Godfather420]

You see, in this system my light is the air handler. They're soul purpose is to adjust via arduinio control to regulate canopy temp

 

[Godfather420]

Very nice way to solve several problems, kudos.

And thank you

 

[Shugglet]

You see, in this system my light is the air handler. They're soul purpose is to adjust via arduinio control to regulate canopy temp

Thats awesome.

Whats the rest of your system setup? How much water you running through it? what chiller etc?

 

[Godfather420]

Or increase canopy temp. Hydronic heating and cooling is my background. I'm a pipe fitter by trade. I understand the true efficiencies of water cooling. Total Energy load that is. It's all in how you recoop that energy. Even my current Hps system are 90+/- percent efficient 6 months of the year. Currently all of my grows recover air-cooled light heat.. I plan on doing the same for these water-cooled systems by running heat exchangers, small heat pump, and a dry cooler..

 

[Godfather420]

Just the lil guy in the tent. Hauen't went full tilt yet. Should have Version 2 12' bars done in 4 weeks. Since Its winter here, first part of system will be run off a dry cooler.....200w to cool 50,000btu....

 

[Godfather420]

Thats awesome.

Whats the rest of your system setup? How much water you running through it? what chiller etc?

As far as the tent setup, I was running a .9a/120v iwaki pump and a JBJ 1/4 chiller and res on 6 cxb's pulling 660-720w and dehumidifier and the tent inside stayed at ambient. Its hard to cool a tent down past ambient temp because of all the heat pressure on the tent from ambient air.

 

[Godfather420]

So, I need some advice from someone more knowledgable than me on led selection. Based on this configuration,

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I
___________________________________________________________________________________________________

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

16" on center..
I like be drawing max at wall 65w per cob.......any suggestions and why?

 

[Godfather420]

What Might be easier is if we work out a barter and i send you a prototype so you don't have to wait for me......

I hope didn't take me for being a dick. Just trying to spread the water cool love. Like you, I'm terribly busy. I think the answer you were looking for was absolutely! I have a Licor 250 and a 190 quantum sensor. I can make that happen.

 

[Godfather420]

Rockin. I'm not liquid cooling so don't know how it would work for you but I've ran a few 3070 epoxied (cree calls it phase change tim) for several months now. Seriously beautiful work.

I use some stuff from omega engineering. http://www.omega.com/pptst/OT-201.html I used this on ASIC chips that were more dense than UNCLEBUCK. 600w in a 1.5' x 1.5" space. AIR COOL THAT?

 

[ttystikk]

id like to see some par readings at different water temps. is that possible?

I'd need a good PAR meter but I'd love to run that test.

 

[ttystikk]

Very impressive work, lots of sexy machined bits!

My water cooled modules are made from 2"x4"x3/16" thick aluminum bar stock, nothing custom about it. Then cut 2" L brackets into 4" lengths and welded them to the ends, tapped for 1/2" NPT and done. All the electronics go on the outside. Each module has 4 chips at 54W each.

With this approach, I was able to minimize cost across a sizeable array.

 

[Godfather420]

Very impressive work, lots of sexy machined bits!

My water cooled modules are made from 2"x4"x3/16" thick aluminum bar stock, nothing custom about it. Then cut 2" L brackets into 4" lengths and welded them to the ends, tapped for 1/2" NPT and done. All the electronics go on the outside. Each module has 4 chips at 54W each.

With this approach, I was able to minimize cost across a sizeable array.

Hey buddy, Hows ur water-cooled venture going? Last time i checked on you, you had something going on with that quantum board style.... How are they?

 

[Godfather420]

Very impressive work, lots of sexy machined bits!

My water cooled modules are made from 2"x4"x3/16" thick aluminum bar stock, nothing custom about it. Then cut 2" L brackets into 4" lengths and welded them to the ends, tapped for 1/2" NPT and done. All the electronics go on the outside. Each module has 4 chips at 54W each.

With this approach, I was able to minimize cost across a sizeable array.

Many a countless nights down a rabbit hole did i browse across your builds. I like your creativity and your outside the bubble thinking. Water cooling isn't for everybody... It's for the those of us that like to be 95+/- efficient

I can't take credit for the machine work.. A friend of mine is a cnc super nerd and dabhead. Keep him oiled up and he runs. : )
Version 2 with custom extrusion is on his bench now to get milled.

 

[ttystikk]

Hey buddy, Hows ur water-cooled venture going? Last time i checked on you, you had something going on with that quantum board style.... How are they?

Water cooled lights be chillin', bro!

Quantum boards have their own thread in the vertical section, also doing very well. They don't need water cooling, however.

I'm intrigued that you've so much hydronic HVAC experience. I think you'd appreciate what I'm doing here.

 

[Godfather420]

So, I need some advice from someone more knowledgable than me on led selection. Based on this configuration,

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I
___________________________________________________________________________________________________

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

I 0 0 0 0 0 0 0 0 0 0 I I 0 0 0 0 0 0 0 0 0 0 I

16" on center..
I'd like be drawing max at wall 65w per cob.......any suggestions and why?

Possibility #1
Citizen CLU048-1212 80CRI (choice of color temps) × 54 Color Temperature: 3000K
Citizen CLU048-1212 80CRI (choice of color temps) × 54 Color Temperature: 4000K
Arctic thermal pads for Citizen CLU048 series × 108
BJB holder for CLU048 series × 108 $270.00
Citizen CLU048-1212 80CRI (choice of color temps) × 54 Color Temperature: 4000K
LEDiL Angelina reflector for CREE CXB and Citizen CLU048 using Ideal holders × 48
HLG-240h-c1750b x 36
Cost $4000

54pcs
1212 3000K80Min 9 COBS @1675 mA ON 1.813 PROFILE HEATSINK
16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
Total power watts at the wall: 606.21
Cobs power watts: 569.84
Total voltage forward: 340.20
Total lumens: 82628.27
Total PAR watts assuming 10% loss: 226.72
Total PPF: 1224.31
PPFD based on canopy area: 823.65
PAR watts per sq.ft.: 14.17
Cob efficiency: 44.21%
Power watts per sq.ft.: 35.61
Voltage forward per cob: 37.80
Lumens per watt: 145.00
54pcs
1212 4000K80Min 9 COBS @1675 mA ON 1.813 PROFILE HEATSINK
16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
Total power watts at the wall: 606.21
Cobs power watts: 569.84
Total voltage forward: 340.20
Total lumens: 85183.48
Total PAR watts assuming 10% loss: 226.82
Total PPF: 1197.11
PPFD based on canopy area: 805.34
PAR watts per sq.ft.: 14.18
Cob efficiency: 44.23%
Power watts per sq.ft.: 35.61
Voltage forward per cob: 37.80
Lumens per watt: 149.49

Possibility #2
54pcs.
1818 3000K70Min 9 COBS @1250 mA ON 1.813 PROFILE HEATSINK
16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
Total power watts at the wall: 633.11
Cobs power watts: 595.12
Total voltage forward: 476.10
Total lumens: 98760.50
Total PAR watts assuming 10% loss: 270.99
Total PPF: 1463.34
PPFD based on canopy area: 984.45
PAR watts per sq.ft.: 16.94
Cob efficiency: 50.59%
Power watts per sq.ft.: 37.20
Voltage forward per cob: 52.90
Lumens per watt: 165.95
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 291.61
umol/s/W: 2.46 LER: 328.00 QER: 4.86
Heatsink length passive cooling @120cm^2/heatwatt: 347 inches
Heatsink length active cooling @40cm^2/heatwatt: 116 inches
COB cost dollar per PAR watt: $0.76
Electric cost @12/12 in 30 days: $19.37
Electric cost @18/6 in 30 days: $29.06
Cost per cob: $23.0
Heatsink cost per inch cut: $0.66
Total cobs cost: $207.0
Total heatsink passive cooling cost: $229.02
Total heatsink active cooling cost: $76.56
54pcs
1818 4000K80Min 9 COBS @1250 mA ON 1.813 PROFILE HEATSINK
16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
Total power watts at the wall: 633.11
Cobs power watts: 595.12
Total voltage forward: 476.10
Total lumens: 96376.46
Total PAR watts assuming 10% loss: 256.62
Total PPF: 1354.40
PPFD based on canopy area: 911.17
PAR watts per sq.ft.: 16.04
Cob efficiency: 47.91%
Power watts per sq.ft.: 37.20
Voltage forward per cob: 52.90
Lumens per watt: 161.94
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 309.46
umol/s/W: 2.28 LER: 338.00 QER: 4.75
Heatsink length passive cooling @120cm^2/heatwatt: 368 inches
Heatsink length active cooling @40cm^2/heatwatt: 123 inches
COB cost dollar per PAR watt: $0.81
Electric cost @12/12 in 30 days: $19.37
Electric cost @18/6 in 30 days: $29.06
Cost per cob: $23.0
Heatsink cost per inch cut: $0.66
Total cobs cost: $207.0
Total heatsink passive cooling cost: $242.88
Total heatsink active cooling cost: $81.18

Possibilty #3
108pcs

CXB3590CD36V3500K 9 COBS @1.75A ON 1.813 PROFILE HEATSINK
16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH
Total power watts at the wall: 594.68
Cobs power watts: 559
Total voltage forward: 319
Total lumens: 91452
Total PAR watts assuming 10% loss: 266
Total PPF: 1236.9
PPFD based on canopy area: 832.12
PAR watts per sq.ft.: 16.63
Cob efficiency: 52.87%
Power watts per sq.ft.: 34.94
Voltage forward per cob: 35.49
Lumens per watt: 163.6
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 263
umol/s/W / CRI: 4.65 / Estimated
Heatsink length passive cooling @120cm^2/heatwatt: 313 inches
Heatsink length active cooling @40cm^2/heatwatt: 104 inches
COB cost dollar per PAR watt: $1.61
Electric cost @12/12 in 30 days: $18.7
Electric cost @18/6 in 30 days: $27.8
Cost per cob: $47.62
Heatsink cost per inch cut: $0.66
Total cobs cost: $429
Total heatsink passive cooling cost: $207
Total heatsink active cooling cost: $68

 

[ttystikk]

Many a countless nights down a rabbit hole did i browse across your builds. I like your creativity and your outside the bubble thinking. Water cooling isn't for everybody... It's for the those of us that like to be 95+/- efficient

I can't take credit for the machine work.. A friend of mine is a cnc super nerd and dabhead. Keep him oiled up and he runs. : )
Version 2 with custom extrusion is on his bench now to get milled.

I'm honored and humbled to be an inspiration.

 

[Godfather420]

Water cooled lights be chillin', bro!

Quantum boards have their own thread in the vertical section, also doing very well. They don't need water cooling, however.

I'm intrigued that you've so much hydronic HVAC experience. I think you'd appreciate what I'm doing here.

I've been stalking you for a long time! ; ) job well done sir... A lot of people give you less credit than you deserve....