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More testing tools....ahhhh! - Page 2

post #11 of 18
Thread Starter 
Quote:
Originally Posted by ChielScape View Post
you dont have any TFB1212GHE's lying around, do you?
Only thing I have are a few yate loon d12sl12's and a few of the medium speed panaflos. Which ones are those, I'm a bit of a newb on fans, I found yates a while back and sort of tuned out any others.

Quote:
Originally Posted by afzsom View Post
I have a Delta AFB1212VHE here if you want a high powered fan for testing Martin...I have two of them actually.
Thanks! I'll see what I can round up and let you know.
    
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post #12 of 18
Quote:
Originally Posted by Martinm210 View Post
Only thing I have are a few yate loon d12sl12's and a few of the medium speed panaflos. Which ones are those, I'm a bit of a newb on fans, I found yates a while back and sort of tuned out any others.



Thanks! I'll see what I can round up and let you know.
they're the 38mm 220CFM's. actually superior to the dualmotor 76mm's, due to using less power for more pressure, though at the cost of higher noise (65DbA, VS 59 or something, iirc)
post #13 of 18
Thread Starter 
Quote:
Originally Posted by ChielScape View Post
they're the 38mm 220CFM's. actually superior to the dualmotor 76mm's, due to using less power for more pressure, though at the cost of higher noise (65DbA, VS 59 or something, iirc)
Ah...yes that are the mother of all..
    
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post #14 of 18
Quote:
Originally Posted by Martinm210 View Post
Ah...yes that are the mother of all..
if thats true, then the PFB1212UHE is the father of all.

just havent seen it available anywhere.
post #15 of 18
Quote:
Originally Posted by Martinm210 View Post
Thanks guys, I'll have to just try some some sample heat load tests out and see what kind of trend I get with varied heat load. It still sounds like something on the orderi of 100,200,500 would be good, but if it comes down to just getting a nice data set to produce a curve that anyone can use I'll see what helps the most with that.

Now about the fans. NCIX might sponsor me on the fans, so I'm narrowing down to these.

Any suggestions?

Thanks guys, lots of great recommendations, but I've been narrowing it down to these. Any thoughts between these?

Low Speed
Either
Yate Loon D12SL12s at 12V and 7V (47CFM + one setting lower)
or
Noctua NF P12-1300 at 12V and 7V (54CFM + one setting lower)

Medium Speed
Either
Yate Loon D12SH12s at 12V (88CFM type)
or
Scythe S-Flex SFF21F at 12V (67CFM)

High Speed
Either
Scythe Ultra Kaze at 12V (133 CFM)
or
Panaflo H1s at 12V (104 CFM)

Any thoughts?

I'm thinking the low speeds plus one undervolt for the silence guys, then the mediums and high speeds at 12V should cover the range pretty well?
Mixing two many apples and oranges!!!

Every fan has a pressure/flow curve like any other pump. This is equivalent of testing a water block with different pumps rather than varying the flow and measuring the pressure.

I would take U1s, mount a large number (8 or 10) to create a chamber. Just a rectangular openning which could then be blocked and the radiator clamped to it.

A similar box could be clamped to the inlet of the radiator, drawing through a channel with a simple flow meter. Then you would have the flow and the pressures on either side of the radiator. You could vary the pressures and flows by changing voltages and turning off and blocking fans.

You could just use a single AC vacuum pump rather than the fans.

You could use a reference set of restriction plates infront of a shoud to independently test radiators with the same flow/pressure measurement setup

Quick, simple, flexible, and revealing tuning possiblities rather than the performance of fans.

My 2¢
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post #16 of 18
Thread Starter 
Quote:
Originally Posted by DavidNJ View Post
Mixing two many apples and oranges!!!

Every fan has a pressure/flow curve like any other pump. This is equivalent of testing a water block with different pumps rather than varying the flow and measuring the pressure.

I would take U1s, mount a large number (8 or 10) to create a chamber. Just a rectangular openning which could then be blocked and the radiator clamped to it.

A similar box could be clamped to the inlet of the radiator, drawing through a channel with a simple flow meter. Then you would have the flow and the pressures on either side of the radiator. You could vary the pressures and flows by changing voltages and turning off and blocking fans.

You could just use a single AC vacuum pump rather than the fans.

You could use a reference set of restriction plates infront of a shoud to independently test radiators with the same flow/pressure measurement setup

Quick, simple, flexible, and revealing tuning possiblities rather than the performance of fans.

My 2¢
Yeah I've been thinking about that too, but if you look around at both thermochills and swiftechs testing, it's the standard up to this point. Most watercoolers just want a general idea of how a radiator performs and arn't too worried if the fans they use are off a little.

I currently do not have an anemometer, so that's something I would have to buy before I could test like that. I'd also have to produce sever fan curves to use so you can estimate the performance based on the fans.

I like the concept, but you'd have to simplify the results after it's all said and done.

You would still be producing good relative data as long as every radiator is tested with the same fans/voltages.

I'm still thinking about it....
    
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post #17 of 18
It would be quicker to test, and more accurately depict the radiator's performance. creating curves of delta water/ambient temps vs. airflow for different fixed power levels would more accurately depict the real world decision people have on fan selection; epseically since most have their fans on a variable voltage controller.

Using fans, especially without shrouds or in push, shroud or not, introduces fan characteristics: vortexes generated, the size of the hub, etc. You end up with a fan test instead of a radiator test, and introduce interactions between the fans and the fins that shouldn't be part of a good implementation. Equivalent to doing performance tests of a car during a snow storm: only relevant of you are in the same storm.

By keeping the heat disappation fixed and varying the airflow it would show water/ambient differentials other than 10°C.

The flow could be varied also, however, for the radiator curves, that seems to have a minimal (10-20%) impact compared to airflow (300-500%).
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post #18 of 18
Thread Starter 
Quote:
Originally Posted by DavidNJ View Post
It would be quicker to test, and more accurately depict the radiator's performance. creating curves of delta water/ambient temps vs. airflow for different fixed power levels would more accurately depict the real world decision people have on fan selection; epseically since most have their fans on a variable voltage controller.

Using fans, especially without shrouds or in push, shroud or not, introduces fan characteristics: vortexes generated, the size of the hub, etc. You end up with a fan test instead of a radiator test, and introduce interactions between the fans and the fins that shouldn't be part of a good implementation. Equivalent to doing performance tests of a car during a snow storm: only relevant of you are in the same storm.

By keeping the heat disappation fixed and varying the airflow it would show water/ambient differentials other than 10°C.

The flow could be varied also, however, for the radiator curves, that seems to have a minimal (10-20%) impact compared to airflow (300-500%).
Yeah, I looked into the curves last night. Unfortunately it looks like I'd have to sell my smaller manometer and buy a more sensetive manometer as well. I would need something in the 0-4.000" H2O with .001" resolution to do it right. And then the anemometer as well..
    
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