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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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#26 |
Cooling Savant
Join Date: Oct 2003
Location: Sussex
Posts: 109
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cheers for the info and the links Cathar
This link also has a piece about centrifugal pumps and the turbine type explained quite well (about halfway down) http://www.epa.gov/grtlakes/seahome/...src/types2.htm Last edited by WAJ_UK; 12-05-2003 at 02:21 AM. |
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#27 |
Cooling Savant
Join Date: Oct 2003
Location: Almere, The Netherlands (Europe)
Posts: 262
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I've been googling for about one hour, and all I could find where a lot of explenations, and some HUGE pumps.
No small ones.... The theory is good, but if it is not there.... we got a problem. If I get it correctly, the idea behind the turbine, is to keep the water longer in the impeller, so it will come out with higer pressure. I like the design, but I don't see me modding that at home with a L20 ;-) With a johnson pump, maybe.... but If i'm going to spend 200 euro's, I prefer to go for 2 MCP600. (not even a quarter of the power usage, and redundency) Who makes the MCP? is it a Bosch motor? And would the manufacurers also have a 1200 model? I gues that an MCP could be modded for turbine also, but it sure would kill it's lpm.
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If it get's hot, it needs to be watercooled! |
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#28 | |
Cooling Savant
Join Date: Sep 2002
Location: Cincinnati, OH
Posts: 229
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![]() Quote:
![]() I talked to Dynalflow and requested a quote: $767.55 US and it comes with a 1/2 HP, 3,500 RPM electric motor... |
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#29 |
Cooling Neophyte
Join Date: Nov 2003
Location: NYC
Posts: 19
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767$ i hope that's a typo
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2.4c @ 274mhz fsb / Abit Ic7-Max3 / OCZ Permier PC4200 mem / Radeon 9800 Pro |
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#30 |
CoolingWorks Tech Guy Formerly "Unregistered"
Join Date: Dec 2000
Location: Posts: 2,371.493,106
Posts: 4,440
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no free lunch
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#31 |
Cooling Savant
Join Date: May 2002
Location: home
Posts: 365
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"Huge" is such a subjective word. We use stuff in the 12,000 gpm range occasionally for work. Folks, when the power you're putting the pump is higher than the energy from the CPU you're chasing down the wrong pathway.
I've got a "little" pump I use at work that's rated for ~55' TDH at 10 gpm. It only cost $228 with OEM discount (230VAC/3ph, single phase available). It has 1-1/4" suction and discharge ports. If anyone thinks such a pump has a place in watercooling a PC, they are sadly mistaken. Nonetheless, it's available from Gorman-Rupp as an off-the-shelf item. Just check out their "ATM" line of pumps. I'm seriously thinking of using the single phase version for a hefty pond project. Anyone asking about how to fit one of these into a watercooled PC is either nuts or has no idea what they are doing. Oh, and you're wrong Bill. I just served up cheese, crackers, and sausage to all the co-workers to celebrate a new product launch (our third kid arrived Nov 20). May not be up to your standards of "lunch", but hey, I'm cheap and it was my nickel. LOL. |
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#32 |
CoolingWorks Tech Guy Formerly "Unregistered"
Join Date: Dec 2000
Location: Posts: 2,371.493,106
Posts: 4,440
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correction accepted, and congrats
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#33 | |
Cooling Savant
Join Date: Sep 2002
Location: Cincinnati, OH
Posts: 229
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![]() Quote:
No, the quoted price is not a typo... (this pump was designed for industrial apps) And No, IMHO this pump is not suitable for even a radical water-cooled PC... ![]() Congrats Dave!!! ![]() ![]() ![]() |
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#34 | |
Thermophile
Join Date: Sep 2002
Location: Melbourne, Australia
Posts: 2,538
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Yes, congratulations on the new child Dave. Our second child arrived on the 1st December as well, so I'll crack open a pack of dips and crackers too I guess.
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I guess what I'm thinking of may not be possible? Basically would've liked to have seen a pump that will provide about 5m of pressure drop at 10LPM (~2.7gpm) for as little wattage as possible. Peak pressure head of say 8m or so. Peak flow of around 15LPM (4GPM) or so. Power consumption in the ~16W mark. Physics says it's doable (only ~8W of actual work being done to achieve such PQ characteristics), but I guess I don't understand enough about pumping efficiency to understand why such cannot be practically done, or perhaps it is more of a manufacturing/cost issue? |
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#35 |
Cooling Savant
Join Date: May 2002
Location: home
Posts: 365
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Well a reciprocal congratulations is in order.
![]() As to the rest of the post, centrifugal pumps need to be reliable and cheap. Efficient isn't too high on the priority list, especially for pond pumps. You can get industrial pumps in excess of 80% efficient, but they have large diameter, low clearance impellers. Most of the stuff I use requires self-priming ability and needs to deal with solids. These open-vane impellers crap out in the 40-60% efficiency range. You may be better served going with a fixed displacement pump. Homeboys would simply hack up an old lawn mower engine to get the job done. Some of the little units on pressure sprayers would also do, but the seal friction may be higher than desireable. Then again, IIRC the seals are loaded by the water pressure, so maybe not so bad at modest pressures. None of these solutions is as cheap as a good pond pump. |
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