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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums. |
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05-12-2004, 03:21 PM | #2 |
Big PlayerMaking Big Money
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Seriously doubt it's rated for continuous duty
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05-12-2004, 04:37 PM | #3 |
Thermophile
Join Date: Sep 2002
Location: Charlotte, NC
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There is another 12v pump which utilizes a diaphram design. It claims 60psi out of the outlet with 1.8gph max pumping. Would this be good for computer use? Apparently it is quiet as well.http://amos2.catalogcity.com/amos/cc...630121/ccsyn/1
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05-12-2004, 08:38 PM | #4 | |
Cooling Savant
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hmm guess this thread title is proof that rhyming slang doesn't cross the pond.... |
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05-12-2004, 09:23 PM | #5 |
Thermophile
Join Date: Sep 2002
Location: Melbourne, Australia
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None of the Shurflo diaphragm pumps are rated for more than 500-1000hrs of use. I phoned Shurflo headquarters and spoke to one of the engineers. While the motors may be continuously rated on some of the higher end pump models but the diaphragm material apparantly will degrade and leak sometime between 500-1000hrs of use.
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05-12-2004, 10:07 PM | #6 |
Cooling Neophyte
Join Date: Oct 2003
Location: Kailua, HI
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I don't know if it's a ShurFlo or not, but I'll waste 50 bucks on it and see what it does after a couple of weeks...
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05-13-2004, 04:21 AM | #7 | |
Cooling Savant
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05-13-2004, 06:51 AM | #8 | |
Cooling Savant
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05-13-2004, 09:56 AM | #9 | |
Cooling Neophyte
Join Date: Oct 2003
Location: Kailua, HI
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Oh, well. Guess I'll just have to drop 80~ for the dangerden model... |
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05-13-2004, 10:37 AM | #10 |
Cooling Savant
Join Date: Mar 2004
Location: Lawrenceville, NJ
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what is with everyone and 12v pumps? ive heard nothing but bad things from them, they draw way too much current to be on your current PSU (hell that one draws 8-10!), and its not hugely difficult to have another small power cable coming out the back of your computer.
my danner mag 3 comes in today, with 2 day shipping, it was 50. cheaper, faster, better, why not?
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05-13-2004, 05:40 PM | #11 | |
Cooling Savant
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05-13-2004, 06:09 PM | #12 | |
Thermophile
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Location: Melbourne, Australia
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The MCP600 draws around 1.0A at 12V The Laing D4 draws around 1.6A at 12V Both amperages are considerably lower than anything that will overload a PSU. DC pumps are typically more efficient than their AC counterparts. The MCP600 is drawing 12W, while out-perfoming at 28W Eheim 1250. The Laing D4 draws 19W while outperforming the 31W Iwaki MD15-R. DC pumps can be easily over-volted as well. The Laing D4 and the (fixed) MCP600 do not have any issues that I'm aware of. 12v pumps don't care which voltage/hz your country's wall voltage is at. You can buy one and it will always work where you live. 12v pumps rock. |
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05-13-2004, 09:11 PM | #13 |
Cooling Savant
Join Date: Feb 2004
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kronchev meant 8-10w not amps I think?
Cathar you tested a d4 at lots of differnent speeds iirc? was it the bearings/motor that made the pump niosy at 20v+? 12v pumps arnt ideal, they are better than mains pumps though, becuase the higher current used (and lower voltage) gives more torque to the motor, giving better head, i think? A pump using about 15v three phase AC at about 360hz, and with more poles (AC motor speed is freq divided by no. of poles iirc, voltage wont affect it) would probably be the best, but youd also need a dc-3phase converter built in - running it form the 12v of a psu is very usefull though.. ^ this would give a much smoother turning of the motor resulting in less niose from bearings, which also should last longer.. while still keeping high current for more torque. doubt any company will make them though... (not at and affordable price anyway) |
05-13-2004, 09:26 PM | #14 | |
Cooling Savant
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The noise is sort of a buzz. It is caused by the square wave used to drive the pump. |
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05-13-2004, 11:53 PM | #15 | |
Thermophile
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Location: Melbourne, Australia
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I suspect that it's caused by some sort of interaction between the bearing and the impellor as the magnetic fields flip very suddenly causing whatever vibrations that would cause and creating the sound. The bearing (the D4 has just one and only one bearing) on the D4 is of a high quality ceramic, and not something that is likely to wear out very quickly, even moreso due to the nature of the design of the D4. It truly is an elegant design. Noise aside, I would have to say it is the single most impressively designed centrifugal pump out there. I mean, at 16v it's drawing on the order of 30W or so, and performing as well as my 50Hz Iwaki MD30-RZ. The D4 is clearly built to a budget price-point though in terms of the motor body. I would gladly pay 1.5x as much for one that used the same design, ran like a D4 @ 18V (~35W - basically performing like a 50Hz Iwaki MD-40RZ which draws 110W), and used sufficient body mass to quell the noise. That would be my dream pump. |
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