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The Copper Radiator Myth

Very.

In extensive testing, Koolance has found our all-aluminum brazed radiators can transfer heat 39-49% more efficiently than a typical claimed "copper core" radiator (per cubic centimeter of radiator).

So why would any company utilize this brass/copper radiator design? The simple reason is cost; this manufacturing technique is cheaper. Brazing a full aluminum heat exchanger requires a relatively large amount of initial expense. (See notes on corrosion.)
Click to expand...
 
great. this after I slam Koolance for their creation of a water bottle behind your mobo product.

/eats shorts
 
The fallacies in that article were hotly debated a month ago. In essence, the testing was flawed. It was performed at INSANE cfm and INSANE coolant temperatures. Car radiators are aluminum because it is lighter and cheaper, they also have as much CFM as they need. For watercooling a computer you want something that will:

A) Play nice with the rest of your components
B) Perform well under the conditions you use it at


HWLabs did a nice rebuttle to the Koolance tripe.
 
Wow! Koolance research says Koolance products are the best! I am so surpised! OMG!!!!

THE SKY IS BLUUUUUEEEE!
 
zero_vertical said:
I've never heard of a copper core radiator or intercooler in a car.
Click to expand...

they used to have them, aluminum is way cheaper, so they switched, this topic has been brought up multiple times, and since aluminum transfers heat to air more readily than copper, but copper moves heat better, is it possible to make copper core fins for a radiator,but with copper tubes. and the internal copper in the fins touching the tubes

ooh, wait, if there's some way to aluminum plate the outside of your radiator, that might work

ACA
ACA
ACA < - like that
ACA
 
zero_vertical said:
I've never heard of a copper core radiator or intercooler in a car.
Click to expand...


How old are you? Have you ever seen/touched a classic car?

Also... aluminum is not cheaper than brass/copper... at least not in an industry application. Aluminum takes gobs of chemical and energy to manufacture. Car companies switched to aluminum because (A) an aluminum radiator can do the same work as a copper/brass unit with significantly less room. This is crucial when you want to make cars sleek and fancy looking with nice pointy/rounded noses with as small of holes as possible for air flow. Aluminum = smaller but equally effective cooling capacity with high CFM applications... that means no more grills the size of your grandma's chain link back yard fence on the front of cars. And (B) because once you get the manufactufing process rolling (wich takes massive financial commitment up front) aluminum begins to save money in the fewer resources needed to build a cooling system AROUND it. This is not to say the radiator itself is cheaper... rather the cooling system as a whole and the hardware, room, and other engine compartment 'stuff' ends up being cheaper as a complete package.

As for an aluminum radiator for a computer... with low CFM I seriously doubt the performance difference over brass/copper is enough to use as an argument for either side. For me the selling factor is the corrosion aspect. I want(ed) to build a system that I really didn't have to dedicate a lot of maintenance to. Build it and forget it... to an extent of course. My entire cooling system is build with that concept in mind. I want water cooling for quiet operation and minimal airflow within the case for a dust free computer. I don't want to worry too much about corrosion (so hell with bare copper), and I want to mildly overclock my componants. After spending weeks looking around I decided aluminum and/or plated copper was the best choice. It just so happens that Koolance meets all of my requirements in a very harmonic way... and looks gorgeous while doing it.
 
actually copper/brass is $8 a pound while aluminum is ~$4 a pound, and aluminum radiators have longer/thinner tubes, so a 3-4 row copper brass radiator is as thick as a 2row aluminum

like this: [replace the hyphens with spaces]
aluminum copper/brass
A ---------------- CC
A------------------CC
A
A------------------CC
A -----------------CC

A -----------------CC
A------------------CC
A
A------------------CC
A------------------CC

[viewed from the top]
just look in the filler neck on a Cu/brass radiator then an aluminum one
 
yeah, they used ~2000cfm fans, and ~180*F coolant, like i said before in this thread [it was already talked about]
 
Biased opinion.

Screw all that crap, they're trying to sell products. They should explain to me why a Dual 120mm Radiator setup with decent blocks performs the same if not better than their EXOS IIs.
 
yea this has been posted a few times when this first surfaced on the koolance site a few months ago. at which time HWlabs (maker of the Black Ice radiator line, among other things) posted a letter to koolance on their front page here: http://www.hwlabs.com/ (second one down)

after they posted that letter, koolance removed that page pending some "extensive testing". they basicly went to an automotive test facility and tested their radiators in machines designed to test car equipment (which is obviously completely different from computer equipment, though they neglected/ignored this fact)

testing the aluminum and copper radiators in a wind tunnel at several thousand CFM and at much higher temperatures (conditions you would see while driving on the highway for instance) instead of in a typical home computing environment.

this is basicly like tesing a Ford Explorer in a diving tank. it probably wont do as well under water as, say, a submarine. aluminum radiators are great for cars, when you have 60mph winds passing thru a 4 foot by 3 foot radiator it cools nicely. this is a completely different application and the test has absoloutly nothing to do with it.
 
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