Dual Pump setup?

[Burning Phoenix]

Has anyone thought this may work?
I have a waterblock/peltier setup which works really well. I use a 5 gallon bucket for a reservoir without a radiator.
I hear moving water at a quick rate throught the waterblock works fine but you need to slowly move the water through a radiator to give sufficient time to draw heat out of the water. So why not run a seperate pump drawing water from the 5 gallon bucket and through the radiator using a small GPH pump then back to the bucket?

[Yodums]

I think it may work if you get the nipples arranged and stuff although your pump is fairly weak if I remember the 600gph are good.

[TruckChase!]

Hmmmm... How do you control what water is being sent to the CPU? What if you end up sending water to the cpu that hasn't been through the radiator loop yet? Surely baby Jesus will cry. (plus the input from hot cpu > output from radiator)

I've been trying think of a good way to take advantage of this sort of idea, but the only thing i came up with was a 3 resivoir/3 pump system with 2 radiators. (1 high output pump/2 pumps at half that output) Ugh. Too big, and too many points of failure. I'm thinking the best way to increase radiator effeiency would be to add a second small one in some place with a fan already.. perhaps a blowhole or something similar. That way you could have the same one-loop system, and it shouldn't affect your flow rate too much if it's a small radiator and your pump is powerful enough.

Hmm... unless you combined the output of the 2 radiators to one line. I wonder if that would speed up the total speed of the flow after the combining point or just increas backpressure so much that it screwed the system up.... I wonder if anyone's tried that. I suppose a single pump, dual radiator would be easier anyhow.

Alright, i'll stop typing out loud. Sorry. :)

Edit: Oh and if you're talking submersible pumps, they do produce a bit of heat themselves.(not much-but noticable) 2 would of course double that added heat.

[Les56]

I use a dual syphon-connected reservoir setup employing 3 pumps to cool a 430watt system(220wPeltier 300w[13.8v,21.5a].,CPU 80w{Duron @1200mh,1.94v],pumps 50w(Eheim 1250,2xAqael600)):
http://www.jr001b4751.pwp.blueyonder.co.uk/P0001036a.jpg

This Heath-Robinson set-up of one radiator ,onecopper coil ,and two fan-blown dash plates/trays attains a steady state resevoir temp of 29c with an ambient of 22c. The Eheim1250 produces a 480 l/h flow rate through a Maze2.2 waterblock.