Awesome new cooling idea, and it works this time!!!!!!!

Bragging rights. No one else can respond to a question like
"dude, wtf is that sticking out of your computer???"
"Oh, that's just my pure Diamond heatsink leading directly into a pool of liquid nitrogen. that's all."
"..........................................................................."
 
ADE said:
Bragging rights. No one else can respond to a question like
"dude, wtf is that sticking out of your computer???"
"Oh, that's just my pure Diamond heatsink leading directly into a pool of liquid nitrogen. that's all."
"..........................................................................."
Click to expand...
LMAO!!! That's hilarious!
 
Yeti said:
Well, it would be continuously turning into gas. Think of a boiling pot of water. This is the reason the vacuum pump would have to work so hard - to get rid of the water vapor in order to maintain the pressure.
A vacuum is a pump, and your drawing says "pump" right on it.
Click to expand...

i could run the vacuum at a very low voltage though, like half or less of full speed, or find an equilibrium rate. It will be hard but its possible.

when you said pump i thought you meant for circulating the water, but the water just sits so there is no need.

here is a possible second design:

Boiling_Cooling_Idea2.bmp
 
Is this supposed to be better and less cost that's of the highest end water cooling? And that about other parts? GPU? 2 of them? North bridge?
 
the other stuff would be in a separate loop. This setup would cost a measly 80 for the next best CPU cooling next to phase and much better than water for super high OCers

the planning and creation is hard though, but i think it has potential.
 
no you see, there is no pump, its a vacuum that removes the gas and doesnt affect the liquid. The liquid sits there and remains at a fixed temperature as determined by the surrounding external pressure
 
1) I'll say it again - this is the same thing as a heat pump, except a heat pump requires no power, no maintenance, and probably works better in practice
2) Technically it is phase change cooling (evaporative cooling), it just doesn't use a vapor compression/carnot cycle
3) What vacuum pump are you going to use? If you're thinking of using one from a vacuum cleaner the typical vacuum only produces 20 kPa of suction (according to wikipedia) which is far from what you would need to boil water at 40 C (I think you need something like an absolute pressure of 7300 Pa). The pumps I work with that could accomplish what you want will cost between $5,000 and $10,000

Looking at your second design - are you going to detach the vacuum and add a condenser? Then that is exactly the same thing as a heat pump, except for the heat pump having a wicking material to allow the fluid to flow against gravity for non-vertical operation.
 
joeswm8 said:
exactly!! its not over pressure and 100C guys!

its very low pressure (often not dangerous) very low temp (40C) bldengineer is thinking the other way. And why would I need a pump? The water sitting on the CPU absorbing the energy would not pass 40C because of the principle of boiling. The water stays at the boiling temp until it all has turned to gas. No pump, why would I need one anyway? Only a res letting new water in every so often, and the vacuum maintaining the pressure in the tube. Very simple
Click to expand...

guys vapor is vapor. it doesn't matter what temp its at. it is stil going to take up as much volume at 40C that it does at 100C. The lower the water level gets, the quicker it is going to boil off. Critical temperture is just lowered in a vacuum. That is if you find a vacuum pump with enough power to keep up with the pressure created by the water boiling off
 
1) show me a heat pump link and pictures. never mind, just looked and it is impractical for computers
2)the point exactly
3)we achieved about 17300 PA at school with a tiny 20cc syringe, i cant imagine reaching a little less than half of that can be hard at all. And worst comes to worst i can get a larger more durable syringe that can get more suction. It cant be that hard at all, i was even thinking something like this:

http://www.skycraftsurplus.com/index.asp?PageAction=VIEWPROD&ProdID=938
http://www.skycraftparts.com/skycraftsurplus/AA60INSN-V Specs.pdf


if you look at the second link w/specs, it says it can reach 2" Hg (what i need) with 60 milliamps, if i interpreted it right. If you can interpret this graph that would be great

1/1000th of the price?? who are you kidding? this would cost around $100
 
guys vapor is vapor. it doesn't matter what temp its at. it is stil going to take up as much volume at 40C that it does at 100C. The lower the water level gets, the quicker it is going to boil off. Critical temperture is just lowered in a vacuum.
Click to expand...
Yes vapor is vapor, but first of all I was assuming the vacuum pump was removing the vapor (not speaking for joeswm8). Second, if it were a sealed container the pressure would build up and the water would cease to evaporate due to the pressure far exceeding the vapor pressure. Of course this is assuming the device can get rid of the heat before reaching 100 C. Finally, I'm not sure what you're refering to by critical temperature, but the critical temperature defined by dP/dV @ T_c = d2P/dV2 @ T_c = 0 does not vary with pressure.
 
1) show me a heat pump link and pictures. never mind, just looked and it is impractical for computers
Click to expand...
Sorry, I meant heat pipe not heat pump; trying to do too many things at once.
3)we achieved about 17300 PA at school with a tiny 20cc syringe, i cant imagine reaching a little less than half of that can be hard at all. And worst comes to worst i can get a larger more durable syringe that can get more suction. It cant be that hard at all, i was even thinking something like this:

http://www.skycraftsurplus.com/index...ROD&ProdID=938
http://www.skycraftparts.com/skycraf...37;20Specs.pdf


if you look at the second link w/specs, it says it can reach 2" Hg (what i need) with 60 milliamps, if i interpreted it right. If you can interpret this graph that would be great
Click to expand...
According to your graph, you could reach your 2 torr if there were no flow through it. So you would need it to be a closed system, the same as a heat pipe (not heat pump :rolleyes: ). You would not be able to use it for an open system for which I calculated before you would need about 24 liters/min of vapor flow.

Edit: By the way a heat pump is not impractical for computers. It is what is commonly referred to as "phase change."
 
You know, I once heard that there was an experiment, instead of using Silicon board ( or what ever they use to make CPU's) they use man made Diamond. I'm a little forgetful on the details but I believe it reduced heat quite a bit.
 
lets get this straight: a single heat pipe has no where near the necessary potential to cool a processor. This is very different with a very large amount of liquid.

second i need to reach 2" Hg, not 2 torr, 2 torr is way too low and thats crazy. And it says it can get that with 50mA at 300cc/min, not bad. And about the pressure created by the water vapor of the boiling water at 40C, where is your equation? PV=nRT?
 
Last edited:
You must log in or register to reply here.
Back
Top