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post #11 of 16
Quote:
Originally Posted by lotdash0t View Post
i know that but would it be normal? everyone will put the fan either intake or exhaust for the rad right? or am I missing something?
I think he means if you have more than one rad in your loop, make sure both are setup the same way. Both of them are intakes or both of them are exhaust, dont put one rad as intake and one rad as exhaust. Im still not 100% sure if that matters though.
post #12 of 16
Quote:
Originally Posted by liljoejoe54 View Post
I think he means if you have more than one rad in your loop, make sure both are setup the same way. Both of them are intakes or both of them are exhaust, dont put one rad as intake and one rad as exhaust. Im still not 100% sure if that matters though.
This.

Radiators work on an air-water temperature difference. A good temperature difference is around 10C. Lets assume you have two identical radiators, with one configured as intake and one as exhaust. With a 10C water-air delta they can dissipate 500W of heat.

Radiator 1 gets 20C air intake, and with 30C water it has a 10C delta. This allows it to dissipate 500W of heat. The air exiting the radiator is 28C.

Radiator 2 gets 28C air intake, and with 30C water it has a 2C delta. This allows it to dissipate 100W (2/10 = 1/5 of 500W) of heat. The air exiting the second radiator is 29.6C.

As you can see, the first radiator heats the air by a large amount and makes the second radiator only able to dissipate 1/5 of the amount of heat. While the numbers change based on your scenario, the second radiator will always perform much worse.
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post #13 of 16
Quote:
Originally Posted by charliehorse55 View Post
This.

Radiators work on an air-water temperature difference. A good temperature difference is around 10C. Lets assume you have two identical radiators, with one configured as intake and one as exhaust. With a 10C water-air delta they can dissipate 500W of heat.

Radiator 1 gets 20C air intake, and with 30C water it has a 10C delta. This allows it to dissipate 500W of heat. The air exiting the radiator is 28C.

Radiator 2 gets 28C air intake, and with 30C water it has a 2C delta. This allows it to dissipate 100W (2/10 = 1/5 of 500W) of heat. The air exiting the second radiator is 29.6C.

As you can see, the first radiator heats the air by a large amount and makes the second radiator only able to dissipate 1/5 of the amount of heat. While the numbers change based on your scenario, the second radiator will always perform much worse.
That's assuming your case is only intaking air from the radiator. Also, the rad pushing air out of the case already has inefficiency from the ram and other components already heating up the air inside the case.

In the end, I would orient the fans to make the case have a net equal pressure with a slight tilt towards positive pressure, so you can control the amount of dust that enters.
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post #14 of 16
Even if you have other sources of air intake, the warm air from the first radiator will still hurt the second radiator's temperatures, just to a lesser degree. As for the rest of the computer, it is a trade off. If you put the radiator in the front you get lower water temperature, but higher temperatures for RAM and hard disks.
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post #15 of 16
ah ic thanks for the clarification
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post #16 of 16
Thread Starter 
The way i have it now is - 2 fans intaking --> Radiator --> 2 fans intaking underneath rad.
Is it possible to get a second 240mm rad and stack it either underneath the other rad or undearneath the fans without it heating up too much and just run it into the other rad.
it'd probably go: Pump > CPU block >Rad 1 > GPU > Rad 2 > Res
Thoughts? ALSO: Single 360 is a last resort possibility, gonna require some serious case modding.
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