The perfect radbox?

[Goksly]

Well ive found a person who can make me a heatercore - to what ever size etc i want, and also design....so what is the perfect radbox/heatercore design?

Would it be with a barb at each end with a pump either side? would it be with barbs at the same end, again with 2 pumps pushing/pulling....

The heatercore im going for will be roughly 300*150*50 but i dont know whether to go for one heatercore/2 pumps or 2 heatercores/2pumps (and have them in para)....

Need ideas please - thanks a lot :x

[fhorst]

hmmm, the rad sounds like the Dangerden double heatercore http://www.dangerden.com/mall/Radiators/heatercore.asp botom of page.

a barb at each end will give you a "single pass" radiator, with the least restriction, but a bit more hard to place in most setups.
pumps are best with feeding of a reservoir, or each other (res->pump->rad->res->pump or res->pump->pump->rad) the last one will work best. If you place a res after a pump, it will give flow restriction.

If you want to improve the design of the dangerden double core, you could make it a single pass radiator, and give it more hight instead of 50mm make it 70 or 100mm.
It will be massive!

I don't know how much heat you need to disapate, but this baby will keep the water even a peltier system cool.

If you want to go for a low airflow radiator you better "stack" them and let the fans suck the air through.
...........................cold air
to cpu <- out |-------------|in............|air flow
pump -> in.....|-------------|out.........|
..........................fan fan.................~
............................hot air

So it's still a dualpass radiator, but in this case a dual layer.

If you look at the smaller radiators, they are all making several layers, to gain on cooling surface. With yours you already have a masive amound of surface, but if you want to get more, you can increase the size of this baby, or make layers.

If you found someone who can build a radiator for you... I suppose that person should have all the technical background to make the best one for your setup...

[Goksly]

Hi
Cheers for the reply The guy who makes them does them for cars, so he doesnt really know what the best set up for something like this is, but if i go to him with a design, he can make it
The ones he has shown me so far look very similar to the thermochill 120.2/120.3, but obviously cheaper, but if he is making them for me i want to do something different

Thinking about the most likely layout of the radbox, i think having a barb at each end, as you said, will make it harder to place.... so res->pump->pump->rad seems a good idea....but will it give as good performance as
........pump -> rad
res->....................>-cpu/etc
........pump -> rad

?

[fhorst]

Originally Posted by Goksly

Thinking about the most likely layout of the radbox, i think having a barb at each end, as you said, will make it harder to place.... so res->pump->pump->rad seems a good idea....but will it give as good performance as
........pump -> rad
res->....................>-cpu/etc
........pump -> rad

?

Performence will be "better". In theory it does not matter where you place the pumps in a closed loop.
The pumps will push each other to the maximum flow rate. It is pushing power - restriction, no matter where you place the push or restriction.

That's theory.... practicly it seems to help to place the pump after the reservoir, and place the radiator after the pump to lose the tiny bit of heat the pump put's into the water. (with submerged pumps the heat of the pump goes all into the water)

It also seems to help to place the pumps right after each other, feeding one with the other.

I guess it comes down to the pressure, that is low at the beginning of the pump, and high at the outlet.
Water with higer pressure can generate more turbulence, more turbulence is better heat dissipation.
So you want to keep all restrictive parts after the CPU (and one of the best flow killers is the reservoir. The only right place for a res is to place it infront of a pump)

If you have a high flow radiator (like yours will be) dissepating the heat from the pumps will benefit above the loss in turbulance.