Time to clear up misconceptions

[sandman001]

Having the radiator before your blocks when not using pelts will not effect temps much. Like seriously, I give it maybe 2C in a slow flow system.

Add some things we need to clear up.

 

[felinusz]

I agree with that one - the pump doesn't generate much heat at all, and the water moves fast enough to not warm up signifigantlybefore it hits the blocks.

Water types (in the from of a question! ) - Is it De-Ionized, or Distilled water that you are supposed to use? I use Distilled.

 

[johan851]

Don't use De-Ionized, it'll pull ions from the other metals in your system. Also...2C is still an improvement. Worth it, IMO.

Another misconception - having water move slowly through your radiator to cool longer doesn't help. You want the fastest flowrate possible.

 

[UberBlue]

Clearing up misconceptions should be based on fact, not personal preference.

System configuration is a grey area with no definitive right or wrong way to do things.

A term like "much" as used in the context of this thread needs to be openly defined with an absolute value. Mr. X's value of "much" may be wildly different from from Mr. Y's value of "much".

My value of "much" is .001 C. Knowing my value of "much", if I have my radiator immediately before my block I logically know the coolest water possible is cooling my CPU. If I have my pump immeditely before my block, the water is "much" warmer using my value of "much".

 

[E-Licious]

I doubt the difference is as high as 2C, but if it IS that much, that's a HUGE difference. If you could get a 2C improvement by just sticking the rad before the WB, you'd be a fool not to!

 

[mata2974]

Don't use De-Ionized, it'll pull ions from the other metals in your system.

as a chemist, I would like to disagree with this statement, which ions are you refering to ? it would take a lot of very, very harsh conditions to result in any significant ionization from deionized water actually "deionized" water has no ions to speak of, forget about autoprotolysis. The presence of other chemicals (additives to your system, such as water wetter etc) would be cause of some concern i.e. for a very very prolonged period of operation!!!!!!!!, for most of what we do I would not even think about it

 

[vonkaar]

I think that one of the biggest misconceptions is that an Aquarius II will cool your CPU better than a large comfy pillow set atop your motherboard.

The second biggest is that you'll somehow drop 20° when switching from a steel case to an aluminum.

What else? Hmm... I hear a lot of misinformation posted as 'fact' around here... although it's rare that I see a senior member say such things...

How about, "T-line is BETTER than using a res." I see people throw that around like it's a law of physics. It *may* be better in some setups, it may not. I use T-lines more often than reservoirs, but I won't make inane statements like "T-lines are ALWAYS BETTER!"

 

[Lothar5150]

Can somone explain this to me

 

[pphx459]

What the hell is that?

 

[vonkaar]

It's called a thread crap.

 

[Lothar5150]

What the hell is that?

An object with a very high velocity reducing the pressure of the fluid around it

 

[Lothar5150]

Having the radiator before your blocks when not using pelts will not effect temps much. Like seriously, I give it maybe 2C in a slow flow system.

Add some things we need to clear up.

By the way I agree with you sandman

 

[Cathar]

How about we inject a little bit of science into the equation eh?

Let's assume we have a Danner Mag 3, being a 35W pump. In actuality the pump will draw a low less power, but let's run with 35W.

Let's assume that the pump dumps all 35W of its power as heat into the water as the water flows through the pump.

Water has a thermal capacity of 4186 J/kg°C. Water has a density of 1.00

Let's assume that the flow rates through the system is 2GPM, or 7.5LPM, which is fairly reasonable given that pump and a moderate-high restriction block, or two low-moderate restriction blocks, and a low-restriction radiator.

Per second, 7.5/60 = 0.125l, or 0.125kg of water flows through the pump, for a total thermal capacity of 4186 * 0.125 = ~523W/°C

Keeping that the pump dumps 35W of heat into the water, then the water will rise by 35/523 = 0.067°C as it flows through the pump.

So the difference between having the radiator before/after the pump is just 0.067°C

So there's the mathematical/physics way to disprove the misconception.

 

[EluSiOn]

Awesome ... I think we can put the matter to the rest now

 

[DOHCrazy]

How about we inject a little bit of science into the equation eh?

Let's assume we have a Danner Mag 3, being a 35W pump. In actuality the pump will draw a low less power, but let's run with 35W.

Let's assume that the pump dumps all 35W of its power as heat into the water as the water flows through the pump.

Water has a thermal capacity of 4186 J/kg°C. Water has a density of 1.00

Let's assume that the flow rates through the system is 2GPM, or 7.5LPM, which is fairly reasonable given that pump and a moderate-high restriction block, or two low-moderate restriction blocks, and a low-restriction radiator.

Per second, 7.5/60 = 0.125l, or 0.125kg of water flows through the pump, for a total thermal capacity of 4186 * 0.125 = ~523W/°C

Keeping that the pump dumps 35W of heat into the water, then the water will rise by 35/523 = 0.067°C as it flows through the pump.

So the difference between having the radiator before/after the pump is just 0.067°C

So there's the mathematical/physics way to disprove the misconception.

Beautiful...

 

[sandman001]

Thanks you Cathar, I will now bookmark this post, and use it whenever someone tells the other person to redo thier setup to have the rad right before the block.

 

[E-Licious]

How about we inject a little bit of science into the equation eh?

Let's assume we have a Danner Mag 3, being a 35W pump. In actuality the pump will draw a low less power, but let's run with 35W.

Let's assume that the pump dumps all 35W of its power as heat into the water as the water flows through the pump.

Water has a thermal capacity of 4186 J/kg°C. Water has a density of 1.00

Let's assume that the flow rates through the system is 2GPM, or 7.5LPM, which is fairly reasonable given that pump and a moderate-high restriction block, or two low-moderate restriction blocks, and a low-restriction radiator.

Per second, 7.5/60 = 0.125l, or 0.125kg of water flows through the pump, for a total thermal capacity of 4186 * 0.125 = ~523W/°C

Keeping that the pump dumps 35W of heat into the water, then the water will rise by 35/523 = 0.067°C as it flows through the pump.

So the difference between having the radiator before/after the pump is just 0.067°C

So there's the mathematical/physics way to disprove the misconception.

OK, so there is only a very minor temperature drop in the water through the radiator. But it's there, nonetheless. Why not put the rad before the water blocks?

 

[DOHCrazy]

Because space is an issue in a case..

People should fit it however it fits and works best for them!

 

[sandman001]

Because space is an issue in a case..

People should fit it however it fits and works best for them!

AMEN.

 

[Cyrix_2k]

Lothar: That's a picture of a plane travelling at supersonic speeds. Because of the pressure created by the sound waves (I think, my physics teacher was trying to explain this), it compresses the water vaper into a small space and basically forms a cloud.