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Methanol Cooling Project. - Page 5

post #41 of 49
Quote:
Originally Posted by hks85;12458464 
have you considered doing a giant heatpipe like setup? you could use a LN2 cpu block, braze a piece of coper, sealing off the top. tap a hole with a vacuum valve. fill the thing with meth and adjust the internal vacuum until you get the best results. By using this with phase change, you chould have a boiling temp of -20c. what do you think?

I like his idea. Fill it with meth thumbsupsmiley.png
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post #42 of 49
Quote:
Originally Posted by hks85;12458464 
have you considered doing a giant heatpipe like setup? you could use a LN2 cpu block, braze a piece of coper, sealing off the top. tap a hole with a vacuum valve. fill the thing with meth and adjust the internal vacuum until you get the best results. By using this with phase change, you chould have a boiling temp of -20c. what do you think?

:::edit:::
also, i know you said you work with methanol but for safety reasons, you (or others reading this) could also consider ethanol as its a little safer when it comes to fire.

A computer cooled by the constant twitching of meth-heads... Now that would be a project.
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post #43 of 49
Quote:
Originally Posted by Skiivari;12331998 
oh cool, and also, funny that it can't be frozen..
Always thought that everything stops moving at 0K, but methanol just keeps going? wow, indeed very cool

Only Helium can't be frozen... it's liquid even at 0K... but it is a superconductor.
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post #44 of 49
Quote:
Originally Posted by mam72;13654753 
Methanol is very toxic as other people have said and it freezes if you go cold enough. If it leaks you have a problem, its flammable and can make you go blind, just to name a few of the problems. I don't if it would but I think it would damage plastics that are used in water cooling.

But if you don't care about that then I want to see your finished result. You could run a tube through a freezer to get it cooler.

Oh and apparently the cure for methanol exposure is ethanol tongue.gif not to sure if its true or a myth someone on here will know.

You can look it up on wikipedia but ethanol competes with methanol to be enzymatically degraded. So you treat methanol poisoning with ethanol to prevent the methanol from becoming toxic.

Just a note, when we use methanol in lab we are required to use it in a fume hood because it is toxic and volatile
post #45 of 49
Humans process ethanol to acetaldehyde enzymatically. These same enzymes process methanol to formaldehyde, which causes blindness when present in the brain (and cannot be enzymatically degraded by the body). Drinking huge amounts of ethanol will competitively inhibit processing of the methanol, decreasing rate it is converted to formaldehyde to a less dangerous level.

This is all a little off topic though . . .

Good luck OP, it'd be cool if it would work. If you work in oil/gas industry you already know the risks.
Edited by avesdude - 6/1/11 at 2:01pm
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post #46 of 49
You could use a pump to circulate the methanol through a water cooler and then back into the system. I think some people build water coolers by making an aluminum container as a reservoir and covering one side of it with TEC's with heatsinks and fans on them. I've been trying to find more details about this sort of chilled coolant system.
post #47 of 49
Quote:
Originally Posted by Neitzluber;13708467 
Only Helium can't be frozen... it's liquid even at 0K... but it is a superconductor.

Actually helium can be frozen just not at atmospheric pressure. Normal helium when cooled to below about 2 Kelvin will solidify at around 2.5 MPa, which is around 25 times standard atmospheric pressure. Also helium dosen't become a superconductor it becomes a superfluid (i.e. what Clark Kent drinks for breakfast). Superfluids have the unique property that they have no surface tension or viscosity. For example the lack of surface tension means that it could creep up the sides of your container and spill over, and the lack of viscosity means that it could actually spring a leak right through the middle of the container in between its atoms.
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post #48 of 49
Quote:
Originally Posted by dinkledork;13790639 
Actually helium can be frozen just not at atmospheric pressure. Normal helium when cooled to below about 2 Kelvin will solidify at around 2.5 MPa, which is around 25 times standard atmospheric pressure. Also helium dosen't become a superconductor it becomes a superfluid (i.e. what Clark Kent drinks for breakfast). Superfluids have the unique property that they have no surface tension or viscosity. For example the lack of surface tension means that it could creep up the sides of your container and spill over, and the lack of viscosity means that it could actually spring a leak right through the middle of the container in between its atoms.

According to wikipedia a super liquid has surface tension, but no viscosity, which is what allows it to creep up the sides of containers. Also infinite thermal conductivity.
post #49 of 49
Quote:
Originally Posted by hzuiel;13814572 
According to wikipedia a super liquid has surface tension, but no viscosity, which is what allows it to creep up the sides of containers. Also infinite thermal conductivity.

Yep I was wrong about the surface tension. As for the infinite thermal conductivity comment, while it does have a thermal conductivity near infinity it is not a superconductor as superconductivity refers to the unbriddled flow of electricity, not heat.
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