rad with furthest distance or travel time between input vs output

craarc

craarc

craarc

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2 Feb 2012
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new rad time so, im wanting either a square 4x 120 (240x 240 i guess) or 120x 480 oblong normal shape rad.

but i want one with multiple intake output options to keep the two as far apart as poss what shape would be best cooling performance? not bothered about positioning cause its not going to be in a case anyway any recomends. going to be using AcoustiFan DustProof Quiet 120mm Fans as they are the best if used so far tbh.

im after a long in rad path so maximum water travel distance so was thinking 120 x 480 input bottom left output top right would provide longer travel time..

really need to know the flow patterns of various rads tho i guess but a square rad say 240 x 240 would have a smaller diagonal depending on layout so the water in rad time would be less i guess.

any recomends?
 
ok thx am going to do some research this week i bassically want as long a travel time between inlet outlet as poss (in rad time as it were)
 
okie going to look at the phobya xtreme quad 480 any ideas on that one ? or is that the bad performer ? looks like as long as its a good performer then i dont need to worry about the flow direction as long as it does the job

you reckon parallel flow will be better than a long single flow path ?

added i was thinking square originally as i had it in my head that it would provide the best performance but im starting to think if its a 4 x 120 as in 480 it wont realy matter as its going to sit behind a desk anyway . whats a reletive top performer in this design ?
 
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wooahh just looked at those thats a bit much but what a system basically endless options in there

im tempted to go away from the square design i was tginking of and going for the traditional 4 x 120 oblong and hanging it horizontally under the desk now

seems the thermochill 120.4 comes out good overall
 
hmmn now you have opened up an idea how about 2 x 360 in parallel so effectivly a 6 x 120 i could fit that behind the desk and y splitter both rads at both ends (getting carried away with options now)

never ending quest for toys !!
 
ok thx i am not totaaly decided on what yet trying to make up my mind what way to go with it.

im after max rad time (vs performance ofc) of course 6 radiators with 9 x 120 fans on each .. but within reasonable limits of size etc.

so something maybe the size of 4 or 6 normal 120mm fans or it will be to intrusive into the space im thinking off
 
malfunkshun said:
why the rad with longest route? most of the top performers are straight up dual pass (there and back)
Click to expand...

in rad water time max = maximum heat transfer out of rad...

compared to in block water time min = max heat trans out of cpu


so basically in block u want max flow in rad u want max time
regardless of the individual component


fast water in cooling block = max heat exchhange
slow water in rad = max heat exchange

assuming your ambient is cooler than in rad temp


which ofc it should be by the max ! as in keep room cool as poss with a/c or similar or a cooler in the sys b4 u get to the point where ambient is your lowest in loop temp


so what im after is MAX in rad time per size of rad. hence wehat is the rad that gives max in rad time as in slow flow or maximum water travel disrance per sq mm

so per squre inch/cm whatever you want to measure it in

what rad or combo will give max in rad time....

ofc within reasin cause u can say buy a rad of 50 cm x 50 cm and get the best 50 x 10 cm fans

but like i said with in reason so 4 x 120 or equivalent.


basically per size either a quad 4 x 120 or a 1 x 480 what gives best in rad time..

the doubles with a splitter seem good size v size but ...

what is the best design ?
 
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the one thing you could do to improve in-rad time that might help would be to run 2 (or more) rads in parallel yourself as this will reduce the flow rate in the rads and therefore increase the in-rad time whilst keeping the high flow rate in the CPU block

i may go that route get two good single performers at the right size and parallel them up then .

i was hoping to get that effect fromn one unit at a sort of performance / cost balance and wondered what the best one to do that was.

will by a couple and see how it goes
 
i know most people have very little variation in loop temps 1-2 degrees but with a large volume loop temp variations can be a 3-5 degrees espedially on the larger external loop systems with cooled ambient.
 
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