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Radiator Testing - Which Fans To Use? 25mm or 38mm? Poll

Poll Results: Which Fans For Radiator Testing

 
  • 62% (5)
    Titan Kukuri 25mm Thick Fans 600, 1200,1800,2300 RPM points (Average CFM/RPM)
  • 37% (3)
    Delta AFB1212HE 38mm Thick Fans 600, 1400, 2200, 3000 RPM points (25mm+25% CFM/RPM)
8 Total Votes  
post #1 of 9
Thread Starter 
So I think I have narrowed my choice down to the following two fans. I couldn't really find anyone willing to sponsor new fans and not willing to fork out $150 to buy 6 new GT AP-29s just for test purposes. I have three of each of the following fans. I also have three Gentle Typhoon AP-15s, but not interested in those since you can't buy them anywhere in the states.

The benefit of the Titan's is that I'll get a more representative RPM scale of your typical 25mm fan and three more is cheaper for me to buy.

The benefit of the Deltas is the higher RPM. The downside is I get roughly 25% more air flow per RPM than a conventional 25mm fan. I could create an "Adjusted" result using that 25% factor to create a 25mm scale, but it wouldn't be actual testing with 25mm fans.

I have also decided against testing with multiple fan types as I feel an important part of the test data points is allowing excel to fit a curve along the many RPM points and having two different fans screws that up. It also costs more and takes more time to set up.

At a bare minimum, I'm going to go push, and possibly push plus pull for all radiators.

What do you think?

Titan Kukuri PWM 25mm fans:
svcompucycle_2192_84307315
Or

Delta AFB1212HE 38mm fans:
img1793h.jpg
img1794f.jpg

???

I'm personally leaning toward the Kukuri 25mm fans myself, but figured I'd throw out a quick poll.

Almost have the radiator test bench ready to put the first triple radiator on..
v2radbench-20.jpg
Edited by Martinm210 - 2/2/12 at 8:47pm
    
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post #2 of 9
Hey Martin, I have 6 afb1212vhe that I am not using, pm me your address and I will ship them to you.
post #3 of 9
I say the Titans. I value my hearing and sanity. tongue.gif


Btw, that is a pretty cool rig you built for the test station.
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post #4 of 9
Thread Starter 
Quote:
Originally Posted by poolman View Post

Hey Martin, I have 6 afb1212vhe that I am not using, pm me your address and I will ship them to you.

Thanks, but the VHE's wouldn't reach down to 600RPM like I want. The HEs I have will just barely with about 8V.

Still leaning toward the Titan's, they have a nice wide range and more representative of 25mm RPM scale. They will actually crank up to almost 2400RPM, so they will get up in the higher speed arena pretty well also.
    
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post #5 of 9
That's a huge range. It will complicate radiator choices imo. You can't just go slow or fast, but have to find a rad gives you a better overall return.
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post #6 of 9
Most people use 25mm fans... I say go for the 25's.
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post #7 of 9
Thread Starter 
Thanks!

My plan is to create 10C heat dissipated curves similar to this, but instead go for the 600, 1200, 1800, 2200 RPM points:

This is an old test with my V1 test bench, but I didn't go any lower than 1000RPM, but I did go up to 3000RPM for the peak, but I also used two different fans. This time I don't want to use multiple fans and would rather stick with one for a better matching fan profile.
SwiftechMCR320-Therm3.png

That should give you a pretty good look across the fan speeds with an emphasis on 25mm fans in the 600-2200 range.


In addition I'm thinking about doing one more test with fans in push and pull so people can see the benefits of push/pull better and perhaps a test on flow rate effects.
Edited by Martinm210 - 2/2/12 at 11:16pm
    
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post #8 of 9
Thread Starter 
I just ordered the 25mm fans...figured they are the most used and actually the push/pull is going to favor higher density rads as well anyhow.
    
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post #9 of 9
Martin, do you think it'd be interesting to review Noctua's F12?
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