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A radiator before a reservoir in a loop?

post #1 of 8
Thread Starter 
I am having issues setting up a loop in my tj07, because my temps are being effected by the weather and lots of dust so i plan on adding another radiator in the top grill to resolve this issue.

this tricky situation is hard to explain and im not sure this will do a great deal of cooling. the loop will go in this order:

reservoir, pump, 480mm radiator, mobo block, cpu block, gpu block, 360mm radiator and back to the reservoir.

problem is the top grill and bottom compartment in my tj07 is a wide gap and even reversing the loop will mean one radiator will be cooling the water after it has completed a circuit, and will be sending cooled water into the reservoir.

anybody know if this radiator placement will be a waste of cold water?
post #2 of 8
The water wont magically heat up again in the reservoir so no it wont be a waste of water

Radiators only drop the temp of the water a few degrees C max. The water really does not heat up that much.
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post #3 of 8
You should be fine... remember the fans can't put cold water into the loop, at best they can cool it to room temperature, which is probably the temperature of your res. As long as your res isn't sitting next to something unfathomably hot, you'll be all good

Just don't go res>pump
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post #4 of 8
It really doesn't matter. The temperature will equalize.
post #5 of 8
Quote:
Originally Posted by LiquidForce View Post
TThe water really does not heat up that much.
Well, if the pump dies it can...OTOH if that happens the location of your rad and res are the least of your worries.
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post #6 of 8
You could hang a quad off the back

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post #7 of 8
Some other people have touched on it, but I'm not completely comfortable with their explanation so sorry to those who have already said this:

Don't think of the water as heating up and cooling down at points of the loop. You have water in your loop circulating at over 3 liters per minute, now you probably don't have far off a liter in your whole loop, which means most the water in the loop is circulating several times per minute. As that happens, not all the heat will be dropped from the rad on the first pass, the water will retain some of the energy and heat up

So.... a better way to look at it, is to think of the water as a whole heating up, then the amount of surface area you have in contact with ambient (radspace) and the difference in temperature between the water and the air defines how much heat can be transferred.

Thus more with more rad space, you achieve a lower dt and thus lower coolant temps.

And that's why it doesn't matter where in the loop the radiator is, it will always be effective.


I have seen people mention though that PC pumps aren't good at pulling through components and are better at pushing. I don't know how much truth there is in that though, I'd like to see more info.
    
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by Crabid View Post
Some other people have touched on it, but I'm not completely comfortable with their explanation so sorry to those who have already said this:

Don't think of the water as heating up and cooling down at points of the loop. You have water in your loop circulating at over 3 liters per minute, now you probably don't have far off a liter in your whole loop, which means most the water in the loop is circulating several times per minute. As that happens, not all the heat will be dropped from the rad on the first pass, the water will retain some of the energy and heat up

So.... a better way to look at it, is to think of the water as a whole heating up, then the amount of surface area you have in contact with ambient (radspace) and the difference in temperature between the water and the air defines how much heat can be transferred.

Thus more with more rad space, you achieve a lower dt and thus lower coolant temps.

And that's why it doesn't matter where in the loop the radiator is, it will always be effective.


I have seen people mention though that PC pumps aren't good at pulling through components and are better at pushing. I don't know how much truth there is in that though, I'd like to see more info.
thanks for explaining thats really helpful. but if the difference is so little, can temps be helped by changing the order of my components? it use to cool cpu, mobo then gpu but now it is in reverse order because i have the case 'flipped'. also will a switech d5 pump be able to push through an extra 360 radiator?
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