Wondering if these Heat Exchangers will work

rev2220

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I am not necessarily going to be over clocking and maybe water cooling isn't necessary for me if I plan to run my rig stock but even at stock temperatures are important.

I am in the middle of a build and it is mainly to play games like Battlefield 3 and who knows what else I may do but also computers have become somewhat of a newer interest to me as far as building my own goes anyways. I have the mechanical prowess and the time to tinker so I thought why not give it a shot.

The reason for my post was to see if the heat exchangers I have at my disposal would work for water cooling a PC. I own a business and sell heat exchangers that we sell to the industrial manufacturing market and I have an abundance of all different shapes and sizes at my disposal and wanted to get the pro's opinion on if the 2 specifically that I have in mind are close to what the industry is already using.

I stock a line of heat exchanges an other components that I really would not have to purchase anything to do the build on the water cooled system. I have the Heat Exchangers tons of fittings from push lock whatever fittings I need I have. I have the tubing in all different sizes and colors and even the pump if I needed it but again I am focusing on the heat exchanger and the manufacturer of the line I stock and represent is OILAIR or now Parker Olaer and one that I have in mind is this one which I believe is below

http://www.olaerusa.com/images/pdfs/Brochure_OAW_USA_2011.pdf

I know these being titanium wouldn't be very economical for the every day PC builder to use but I have 40 on them at any given time and have seen similar on build sites so I don't see why this wouldn't work but then again I am a Noob looking for some professional opinions.

The other heat exchangers that is more the fin type radiator look is this below

http://www.olaerusa.com/images/pdfs/StandardCoolerCore.pdf

And here again I am thinking of the smaller core to use but would like some input

I know there are other components that are necessary and I probably have them like flow meters I have all sorts, we machine out own manifolds but again those are mostly used in the hydraulic or pneumatic sector.

But I do not see why they could not be used in this application because they are usually aluminum or titanium and with the proper water and treatment of there should not be a problem crossing over into the PC sector.

So for anyone who is a water cooling enthusiast please chime in and let me know your thoughts please. I am a few weeks from even laying a part on the bench to even think about building one and if I am not over clocking then it may be a total waste but heat is the enemy to just about anything in the computer world just like it is in the business I am in.

Maybe with a little help and thoughts from you guys about these particular items that I am thinking about using in a build I can get across the goal line and possibly be able to hook someone up with some of the product I have for helping me if you think what I have would work.

I need to do some more reading within the stocky in this thread it looks like some good information from what I read so far but when I started delving and looking online I started noticing many similar looking items that I have a ton of that is being used in water cooled PC builds.

I have not really been able to see what the cost of a "High End" water cooling system goes for so if anyone has any direction on linking me to the ultimate water cooling system out there please by all means do so. In the end it may just be more cost efficient to buy one for that matter but I am a DIY type of dude so...

Many thanks in advanced and I hope to see some feedback from the local TH's water cooling enthusiasts with some thoughts of the products I linked and possibly what the cost of the highest end cooling system goes for that way I will get an idea of whether something that costs me $x amount of money and time becomes a no brainer to purchase.

Thanks again and kind regards

REV
 

Buzz247

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First things first - avoid aluminum! Most waterblock components are made of nickel, copper, or sometimes brass. Dissimilar metals will cause an ionic reaction resulting in corrosion and failure. Will have to check periodic table later on titanium lol. So, your second set is out. First one, stainless steel brazed with copper might be ok. But how are you going to mount fans? Or just use massive ones for ambient cooling?

Pumps are simple. If you have one that can match market d5 specs for flow and pressure - go for it!

A normal gpu and cpu single loop can be purchased for5-600US. Cpu only about 3-400US. And that's for good quality performance custom loop.
 

rev2220

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Thanks Buzz, Some good points for sure I do have some Copper brazed Oilair OAW heat ex changers that are around the size of a GTX 560ti Graphics card. But you have me scratching my head with not being able to use Aluminum since we use them all the time to cool oil and water. I am not doubting what you say at all I am just trying to understand what problems I am going to encounter.

If I used a copper and Aluminum mix of components with stainless or plastic fittings from Alpha fittings. Sure oxidation's can occur if your cooling solution is exposed to O2 which it would be in an open loop and again I have a ton of reading and diligence to do but doesn't anyone make or used any type of closed loop cooling system?

I have 4 CNC Fadal Mills so I can machine anything but hate to machine Stainless because stainless can eat up some 150.00 end mills real quick and then any savings in the DIY is out of the window.

But Aluminum cuts like butter but you say with emphasis avoid it? Now in my industry for disapation of heat Aluminum is one of the most highly used material used so are you saying avoid Aluminum 100% unless everything is Aluminum or another non ferrous material is used in conjunction or stay away from Aluminum becuase of the application being to cool PC components? If it is becuase it is not the best choice for a PC please explain?

What are a majority of the commercial PC heat ex changer Radiators made out of? Plastic? Again I dont know diddly squat and have just started to do my home work but there are no better places to learn than from people like you who already have the knowledge and been there done that don't do what I did advice so again I really appreciate your feedback and do understand mostly what you are saying and understand that Aluminum open to atmosphere can oxidize and can make for undesirable water conditions but I thought there were open loop systems which required a reservoir and closed look systems? I would think with the proper volume of water one could make a multi closed loop system that should dissipate a good amount of heat along with proper usage of fans?

Thanks again for your guidance I appreciate it very much! Hope the weekend treats you well

Kind Regards
 

Buzz247

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Mar 18, 2013
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The issue is not air contact causing oxidation. It's the ion exchange between the metals that is the cause. Your industry see negligible impact due to the size of components. Open up a cpu block. The matrix used is so fine, that a little corrosion can completely foul a block, causing reduced flow, thermal issue, possible leakage and shorts. Closed loop systems still encounter this limitation. It would be equivalent to using tap water in your loop, instead of demineralized/distilled. Eventually you will see pitting, clogging, and leaking. Hence why every pc use rad I know of is copper. In your industry, alum is favored for strength, cost - mainly due to size applications. Copper is more expensive and softer. Smaller application also favors slightly higher thermal properties of copper.

Let me qualify a bit better. Here's what needs to be done if mixing metals to ensure proper function:

Every 30-60days, heat a solution of vinegar and distilled water 1:5, run thru cooling system, then flush with distilled to remove vinegar. Refill.
Every 4-6 months, open blocks up and scrub internals with same solution and soft toothbrush (some favor ketchup for this) inspect for pitting and replace as needed.

Can it be done? Yes. Too much of a PITA for most? Yes lol
 
Agreed, when it comes to computer water-cooling, avoid Aluminium.
Amongst the "normal" water-cooling metals (Brass, Nickel, Copper) galvanic corrosion isn't much of an issue since they are very close on the Galvanic index, but Aluminium is very dissimilar to those metals and will cause corrosion.
http://martinsliquidlab.files.wordpress.com/2012/01/corrosion1.jpg?w=614
Titanium is actually equal to Nickel on that scale, so chances are that would be fine to use.

I suspect the reason why Aluminium is used commonly in your industry is that it seems oil is largely the coolant being used? Substances like mineral oil are far more inert and don't allow electrical conductivity like water does, so preventing Galvanic Corrosion. That's why you can even submerge a PC in mineral oil and it will still run fine (excluding Hard Drives).
http://www.youtube.com/watch?v=xwBrCP9B93E

Typically a water-cooling radiator is constructed of Brass for the tubing and core with Copper fins, though some are starting to use Copper for the tubing as well.

If you do decide to use Aluminium components, you will want to check the loop regularly for corrosion and run an Ethelyne Glycol (main chemical in Anti-Freeze) and Distilled Water solution, that will inhibit corrosion.
Closed Loop Coolers like the Corsair Hydro systems do use Aluminium rads because it is cheaper than a Brass/Copper one, but they run purely Ethelyne Glycol to make sure it doesn't corrode (and if it did, a person who buys a H100 wouldn't notice).