anyone have any ideas about letting thermal convection to move the coolant in the loop move the mercury instead of using a pump....?
as some of us are aware diamond is one of the most heat conductive materials known to man...... and i am flattered my nerdyness made your day......
OK apparently no one here knows how magnetic fields and Faraday cages work. Stop it.
The answer is a strong focused magnetic field will screw up a HD in a second.
The answer is motor magnetic fields are focused and the field strength falls off rapidly even if any of it escapes the motor housing the HD case will shield sufficiently from any leakage. Even an inch of space and or any other grounded ferrous metal will knock the field strength down significantly.
Take a 5 lb horseshoe magnet and set it directly on top of an HD and its turned into a raw drive instantly and you will be lucky if it low level formats properly again.
Dont make me have to stop this car. Carry on.
About the Mercury. You will shoot your eye out.
My question is how you'd manufacture a block using diamond as a material.
to answer your question: it depends.... as there is more than one way to do this....
1. most direct solution get your hands on a solid high purity wafer at least 1" in diameter. this would be very expensive so probably not within reason for most people....
2. use smaller diamond inserts and cast high purity copper, silver, or gold to encase the diamond. this would be less expensive especially since you wouldn't need a large stone...
lol.... you do realize that liquid helium flows up, right?As much as people talk about using diamonds for heatsinks, I'm pretty sure a continious liquid He stream poured directly over the outside of the CPU with no heatsink would be much more economical and more effective. Although I have no idea if liquid He is conductive, but I would guess that it isn't and I don't feel like googling it.
Umm, liquid helium is 100 times denser than air.... gas helium is less dense than air, but liquid helium is not.
when in transition from a liquid to a gas it has the rising fluid behavior...... which would start happening by the time you get the bloody stuff more than a few inches from its, well insulated storage container....... not to mention more so when brought near something that is 30C......................
Well, I could tell you what I think of your opinions but it wouldn't get us anywhere so I figured I'd just sigh to let you know that you aren't getting a reply.
sorry, i can be an ass some days.....
i guess what i am trying to say is that i don't feel that liquid He is the solution besides this thread is to discuss mercury cooling... feel free to start a liquid He thread if you so wish.... i would be interested to see just what comes of it.....
Liquid He is all ready used. Someone has posted that you should make a diamond heatsink. I responded by saying it would be cheaper and cooler to simply pour a steady stream of liquid He. He pours just like water btw.
You all are dancing around the biggest flaw with using mercury to cool your system. It's used in thermometers because of it's thermal expansion properties. Now take that and add in a closed loop with no air and no room for expansion and what you have?
A TOXIC BOMB in your house.
whoops my bad...... i meant heat capacity and yes it would need to flow.....
This is the most ridiculously awesome thread ever!
I like the idea of letting thermal convection move the mercury, it would make the system (relatively) lower maintenance than using a pump (no moving parts to replace). The question is, would the design just be similar then to a heatpipe, if not exactly that? Or is there some other method besides a heatpipe design, that might possibly be more efficient?
I'll try to be nice forgive me if I'm not.
You would never be able to design a system in which natural convection moves the mercury with a lower temp delta than an air-cooled system, much less a watercooled system.
Heat pipes don't do that at all. Heat pipes phase change a liquid to a gas which then drives the movement to the other end of the pipe where it condenses back to a liquid. It is the phase change that captures and moves the heat.
This thread is still going on.
Well I'm not Science nerd or anything, but I asked my Science/Chem/Physics/Engineering teacher, Mercury Cooling is possible but it will cost tons to get the appropriate parts to push heavy mercury compared to water around a liquid cooling system due to its heavier density. And do you know Mercury eats metal for breakfast? Why do think they are stored in glass?
*facepalm* i believe everything in your statement was covered in the first two pages of this thread..... and again mercury has different levels of reactivity with different metals.... for instance mercury is nonreactive with iron which is why iron containers are commonly used for transportation. aluminum on the other hand will form an amalgam which will rapidly erode the aluminum....
hence thats why I'm posting, to make more of a point how useless this ongoing thread is, but ridiculous amusing at the same time to read.
or is it?
this is the last time i will explain myself for starting this thread.......
i wanted to test the waters and see how people would react to this type of subject matter, also i wanted to get the creative juices of this community thinking of other ways (creatively) to approach cooling problems... ya know like using something like mercury as the transfer medium.... and thinking of ways to make it work.......
You've missed a few.
I can assure you , submersion cooling works.
Related to this , spray cooling is also employed. (cray)
Also , special mention should be given to 'passive' cooling under the 'air cooling' section.
My opinion is the VIABLE cooling options are as follows:
Stock air cooling
Improved air cooling (~20$ range)
Ultra air cooling (Thermaltake Ultra 120 type)
----- limit of air cooling ----
Entry level water cooling (Corsair's HT-50 kit for example)
High end water cooling (triple radiator, high end block, etc)
---- limit of water cooling ---
---- limit of ambient cooling ---
Non-viable cooling options.
Peltair blocks - Only viable for lower power consumption systems. Going about 20C sub ambient on an i7 will run you 1000Watts of power consumption AND disipating 1000Watts+CPU on the other side. Phase change makes much more sense.
DICE - Non-continuous
LN2 - Non-continuous - Good for record runs
LHe - Non-continuous - Good for record runs
Phase change, - compressor loops, i.e. hacked air-conditioners, "chillers", etc. Eventually I think we'll see someone splice a water block in the loop and make a commercial product capable of wattages needed for OC'ed i7s.
a good list of cooling options... however this thread was not intended for the discussion of what people have already done and or methods currently being used so much as an academic discussion of possibilities....
@ vengence: this thread is not about viability, instead it is assumed that the person building this has infinite resources..... and they want mercury as the coolant.
I'm familiar with the technique you are talking about. I'm guessing some kind of methonal evaporative cooling technique? If so it seems it would fall under phase change. Even so, I'd think a simple carnot cycle would make more sense. But again, I'm not familure with the technique you've named.
I did some hunting and found it. It's pretty neat stuff, although I suprised they found it viable.It does infact fall under 'phase change' , albiet the most extreme form.
As far as I know it's Fluorinert they use.It's used in the Cray X-1 system.I'll try to dig up the video I saw.