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*Stacking Rads* Have an idea, dont know how to search it

post #1 of 10
Thread Starter 
So lets say you have room for a single 240mm rad internally in your case.

However, lets say you also have room to stack on their sides, with fans included, three 120mm rads of equal thickness. Taking up the same amount of "room", what are the downsides to this idea?

The biggest I can think of is cost and the multiple 90* bends you would need for connections.


Has this been tried? If so, what were the results?
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post #2 of 10
you can cascade rads, there is a pressure drop though...

you would want your flow to be from exhaust to intake so you're not heating your coolant...
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post #3 of 10
stacking rads is an awful idea, after the 2nd rad the other are pretty much useless and actually a detriment
 
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post #4 of 10
Thread Starter 
Can you explain how?

I would assume if you cant fit a 360mm rad, but you can stack 3 or 4 120mm rads it would be similar results.
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post #5 of 10
Quote:
Originally Posted by M0E View Post
Can you explain how?

I would assume if you cant fit a 360mm rad, but you can stack 3 or 4 120mm rads it would be similar results.
No, I ran into this problem myself. I already had a 240 rad and my case supports up to a 480 internal rad so I just bought another rad to cascade or put under the one I owned prior. I saw some reduction but for a whole other radiator it wasn't as much as I thought it would be. I then tested out a single 480 rad and got MUCH better temperatures. I had it explained that the reduction in tubing, fittings, and a longer flow through the larger rad makes it much better.
post #6 of 10
the air continues to heat up as it continues to pass through radiators. once it reaches the temp of the water it will be utterly useless. The only way to reduce this effect is to have the water enter the last rad of the stack (where the water and air is the hottest) and go all the way down to the coolest (the one where air is being pushed from )
 
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post #7 of 10
Isnt it only half efficiency after the first rad?
    
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post #8 of 10
Quote:
Originally Posted by TheReciever View Post
Isnt it only half efficiency after the first rad?
Depends on how well the radiator cools and what rpm fans are being used, but yes. The higher rpm fans the less hit is taken by each radiator. With What most of us consider acceptable decibel level fanspeeds you will take nearly a 50% hit
 
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post #9 of 10
Yeah, agreed. Stacking rads isn't as good an idea as it sounds in theory. The cons outweigh the benefits.
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post #10 of 10
Stacking with the same airflow isn't that efficient, as I found out after researching more. However, mounting a radiator to each case side, and push/pull outside air through the radiators, and splitting water flow to them should perform sufficiently if space is limited. I wonder how many people have tried this.
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