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Anybody in here using a heat exchanger? - Page 2

post #11 of 15
Quote:
Originally Posted by seross69 View Post

can you explain this statement??

The exchanger is passive so the hot side would be your water blocks. The cold side still needs to be cooled and if you are just using a radiator you have the temperature differential between the rad and air, and then the difference between the hot and cold sides of the loop. The heat exchanger only makes sense if the water on the cold side is colder than ambient or the two liquids cant mix.

Just an example the temperature differentials could be different.
Air(25C) >rad> cold side(35C) >heat exchanger> CPU/GPU(45C)
or in a normal system
Air(25C) >rad> CPU/GPU(35C)
post #12 of 15
Quote:
Originally Posted by Jakusonfire View Post

Who cares about other industries? They don't only work at a 20C delta ... that is just where they will transfer the rated 2700 watts

I did say they were a niche for computers and other industries some of us care about this because that is where we lean a lot of this thermodynamics... I know everything you are saying about these I was just trying to explain it in a very simple way. they are highly efficient but not practical for use in a PC. Because you would need the cooling water to be at least ambient temps. And as far as a swimming pool I don't know about New Zealand but where I live the water in my 6mtr X 12Mtr with average depth of 1.5 mtr gets to 32c. while the temp of the house is about 21c.

I actually have one of these and are playing with it trying to find a viable way to use them in a PC. I have a compressor with a TEV valve hooked up on one side having hard time to regulate temps as I am trying to do it from pressure.

having fun..
post #13 of 15
Quote:
Originally Posted by rancor View Post

The exchanger is passive so the hot side would be your water blocks. The cold side still needs to be cooled and if you are just using a radiator you have the temperature differential between the rad and air, and then the difference between the hot and cold sides of the loop. The heat exchanger only makes sense if the water on the cold side is colder than ambient or the two liquids cant mix.

Just an example the temperature differentials could be different.
Air(25C) >rad> cold side(35C) >heat exchanger> CPU/GPU(45C)
or in a normal system
Air(25C) >rad> CPU/GPU(35C)

actually to use one of these correctly you need 2 separate loops... and one should be colder than the other one....
post #14 of 15
Quote:
Originally Posted by seross69 View Post

actually to use one of these correctly you need 2 separate loops... and one should be colder than the other one....

Sorry of that is confusing i was just trying to show temps not water flow. The loop is split at the heat exchanger. What it's trying to show is that the hot side needs to be the side with your water blocks. There will be a tempeture differential between the hot and cold sides of the heat exchanger. And then if you are using a rad to cool the cold side, there will need to be another temperature differential between it and the air. So the system only makes sense if you have loops that need to be separated, like usinng a pool as your heat sink.

And because the heat exchanger is passive the water block side of your loop will always need to be the "hot" side.
post #15 of 15
Heat exchangers are only useful for systems with two or more different fluids. An example of this would be to use a vehicles water cooling system to also cool the oil via a heat exchanger preventing direct fluid to fluid contact.

Unless you were planning on designing and constructing a dual loop, operating with different fluids (which I fail to see the need in a PC system). A heat exchanger would be useless and completely unnecessary. This is due to being less efficient than direct cooling.
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Thanos
(12 items)
 
Benchy
(15 items)
 
Aspire 5755g
(12 items)
 
CPUMotherboardGraphicsRAM
I5 6600k @ 4.6 Asus Z170 deluxe MSI 980ti twin frozr 6G 8gb Corsair Vengeance DDR4 @ 3000 
Hard DriveCoolingOSMonitor
256gb Samsung 850 pro Be Quiet dark rock pro 3 Windows 10 64bit 23 inch Samsung SA3000 
KeyboardPowerCaseMouse
Qpad Mk 85 Corsair HX750 Fractal Arc Midi R2 Corsair M65 
CPUMotherboardGraphicsRAM
i7 2600k @ 4.5Ghz HT on 24/7 GA-Z68X-UD5-B3 MSI 7970 [2PMD3GD5] @ 1270/1900 4x 4gb Corsair XMS3 1600 
Hard DriveHard DriveCoolingOS
3x WD GREEN 500GB 128gb OCZ agility 3 Noctua NH-D14 Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Samsung S22A350H Qpad mk-85 (Cherry Red switches) Corsair HX750 Handmade Test Bench 
MouseAudio
X7 (I didn't buy it) Plantronics Gamecom 780's 
CPUMotherboardGraphicsRAM
i7 2670QM Bios unlocked NVIDIA GT540M (OC GT55M Speed) 8gb 1333MHz 
Hard DriveHard DriveOptical DriveCooling
WD 750gb Samsung 840 pro SSD Removed for SSD! what cooling? burning 
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