Water Cooling Citi 1212

I'm looking to build my first DIY COB and after looking at the price of heat sinks, and reading about some others ideas, I'm looking to RIU for some input on liquid cooling.
The build will be 2 fixtures for a 4x8
Each fixture will contain 16 citi 1212s powered by a HLG600.
I'm looking for insight on sizing the heat exchangers/heat sinks to ensure they are efficient enough.
As far as a chiller for the water, I had 2 ideas. First would have the lights drawing water from a storage tank(55+) gallons through the exchangers, back into the storage tank in an open loop style cooler. If that amount of water was unable to keep the lights cool, the second option would be to utilize a closed loop system with either a radiator and fan, located out of the room, or a wort style chiller submerged in the head bucket of my DWC which is attached to a chiller.
Again, I'm new at this, so take it easy on me!
What do you guys think?

A couple of folks come to mind @Airwalker16 and chilledled both do water cooling. Have fun google chilledled he is on youtube and airwalker is here.
namaste

Why not just run standard heatsinks with Active fans instead of passive pin heatsinks?
If your buying quite a few there are a few suppliers you can speak with on passives.
Im currently in the works of getting a bunch of them.
As for water cooling, its a really good idea, but needs a good implementation for sure.

I've never touched water cooling. Vegas smoked a bit too much.

Im doing a similar build, with a lot lot more chips...The plan is to use mineral oil for exchange fluid, large thermal tank that will hopefully be warm enough to provide at least partial radiant heating for the space thats being built...

Your light will be putting out ~2050btu/hr.

Roughly 440btu will raise a 55gal res 1*f.

So your res will be raised 4.7*f per hour. Probably not enough water for a passive build considering youre going to be raising the temp ~60* over the course of 12hrs. Granted, a relatively small radiator could probably dissipate enough of the heat to make it work.

Edit: These figures are for one fixture. Double it for your two fixtures.

Considering you have a chiller already, I would just run a wort chiller or something from it to help cool your res. But there any many different routes you could go.

Also, its tough to say how much cooling power a radiator has because it is dependent upon numerous different variables. Such as the flow rates of the mediums and temperature gradients involved.

Let me know if you have any more questions.

Shugglet said:

Your light will be putting out ~2050btu/hr.

Roughly 440btu will raise a 55gal res 1*f.

So your res will be raised 4.7*f per hour. Probably not enough water for a passive build considering youre going to be raising the temp ~60* over the course of 12hrs. Granted, a relatively small radiator could probably dissipate enough of the heat to make it work.

Edit: These figures are for one fixture. Double it for your two fixtures.

Considering you have a chiller already, I would just run a wort chiller or something from it to help cool your res. But there any many different routes you could go.

Also, its tough to say how much cooling power a radiator has because it is dependent upon numerous different variables. Such as the flow rates of the mediums and temperature gradients involved.

Let me know if you have any more questions.

Click to expand...

Wow, that's a ton of info. I really appreciate you taking the time to write that all out for me. I will be getting in touch once I have everything in my hands