Whoa! Don't get motor oil! Jesus, just get standard acid-free mineral oil and make sure it's the pharmaceutical grade stuff. Motoroil has too many additives, there is no telling what it could possibly do to your components.
I have a old laptop im willing to experement with, but mineral oil does sound like a better alternative...
oi! He's got it!! I've spent an hour or so looking around the web for cooling liquids (there is a TON of info through google) and 3M seems to have the best. Their best thermal conductive liquid is FC-70 which has a relatively high viscosity (24 centipoise), more conductive than water in terms of heat (0.070W/MC) and is twice as dense as water(will make your case much heavier, weighing at least 25 pounds for 1.5Gal or so). You could alternatively go with FC-3283 - with thermal conductivity similar to that of water (3283: 0.066W/MC H2O: ~0.065) which is still heavy, yet much, much less viscous (1.4 centipoise). I am not aware if poise are logarithmic, linear, or exponential.. I only find conversions to dynes and hell knows what that means..they don't teach that kind of stuff in school! A passive cooler might be smaller, but a real heatsink might work better Take a fan off your current one and see how that works. With a low enough viscosity liquid and the intake blowing directly onto the heatsink, you should find that the hot liquid is circulated by means of convection currents. You might even feel daring and try a fan in there.. After all, 3M's products are non-conductive! Don't expect high speeds but expect LOW volume!!
last time I checked it was possible to go fishing with a generator simply by electrocuting the water which makes fish to float to the top illegal as it may be...you have to admit it's quite resourceful.
Conductivity of water Water's conductive. Everyone knows that. Most people also know that distilled, deionized water is not conductive. What I wish more potential modders knew is that even distilled, deionized water is conductive. Not very much, but it is. And also, distilled, deionized water has a nasty habit of pulling minerals and such out of just about anything it can come in contact with. Which will of course make it conductive. Don't do it.
Isn't everything conductive? Like, air seems to be not-conductive either but when you use high enough voltages you can see arcs between a + and a - pole.
Water itself is not conductive, it's the ions in the minerals and there spacing. This is what regular water is like Code: point A ion ion ion ion Point B The electricity can easily jump between electrons to each point B With distilled water Code: Point A Point B This will have trouble conducting, unless point A and point B are very close (like on a motherboard) But anything can conduct electricity, as the higher the voltage the farther apart ions can be. At least I think it's the spacing of ions. It might be the spacing of electrons. Or something else. But the theory is the same.
Re: oi! SAY WHAT? i didn't get about half of that. Altron was being sarcastic. At least i hope he was.... Oh, as most of you would have prob guessed by now: This proj has been put temp. on hold due to lack of funds, and time. Im doing a bunch of other MUCH smaller mods (ie: Calc mod), and stuff for friends/girlfriend. So, im not going to let this thread die yet, expect it to be restarted in a month or so when i have some free time. But for now it can live w/ life support....
i've worked with refrigeration systems some (i'm 16) an would have to say that in order to build a proper system, (where your $500 of cooling fluid doesnt just evaporate) you would need to enclose the system in a metal system (the liquid will stop evaporating once the inside has reached a high enough pressure) you would then have to pump the coolant into a radiator, where it would evaporate and then be recompressed into liquid (all nice and cool again) and return to the pressurized system. How can you get data and power cables out of a pressureized system (i'd guess about 80psi)?
Fluorinert? Have fun with it heh Here are som elinks I discovered http://www.octools.com/index.cgi?caller=supercool.html http://www.octools.com/index.cgi?caller=articles/submersion/submersion.html http://slashdot.org/articles/00/06/30/1322219.shtml http://zeus.sequoias.cc.ca.us/staff/machuca/Research Paper_files/S2001/Andrew Riordon.htm http://products3.3m.com/catalog/us/...erials_3_0/command_AbcPageHandler/output_html
I have mine that I made sitting in my spare room right now. I used clear medical-grade mineral oil...
you best bet is some type of pure oil reasons... 1) it can be cheap, dirt cheap (3m knows they are they only ones making their stuff and you can bet they will charge you out the wazoo for it) 2) it is denser (kind of depends on the material but the denser it is the more heat it can disperse, air is an insulator, space is an insulator, less air/empty space= less insulation) 3) did i mention its dirt cheap? 4) any moving parts such as fans would theoretically work in it and always be lubricated (im not really sure how long a fan would last though pushing oil instead of air but you could get a good quality fan like a smartcase fan and run it through the minimum setting on the included spd control) just make sure you test everything many times and figure out a way to drain it easily, because it will need to be drained. You could mount a drain thing underneath to hide it and epoxy the top from a 2/3 liter soda bottle with a screw cap on it. If the material is truly non-conductive you can put the whole computer in there except the CD roms and HD. [cool idea] if the mobo is laying horizontal the the ground and has a heatsink and fan on the CPU, then it is submerged in liquid, you could make the liquid level close enough to the Fan to make a little whirlpool. [/cool idea] no matter how you do it, it would be really cool to somehow see the liquid moving around in some fashion. (meaning: waterfall/whirlpool/some sort of a bubbler, something to make it fun) Vazz
Ok, this may be a stupid question, but how do you keep the oil cool? Wouldn't it just heat up, same as everything else always does? Or is this going to basically be like a water cooling system, cept instead of using water blocks, your just putting the whole computer into the res? I really don't get what you are doing.
Yea that's what they're trying to do. Basically there's no worry about leaks as with watercooling or another advantage is if you cycled the oil round then it'd stay better cooled than watercooling maybe. Anyway my opinion: I've seen it done with motor oil. Anyone in the UK, there was an article in PC Upgrade magazine (comes with PC Answers) about a guy who did it with motor oil and the only problem was that some of the motor oil got between the bios thingy and the mobo but that was quite easily solved. -Nathan
no. you are wrong. water IS NOT conductive. Neither is salt. but salt water is. pure distelled water will not conduct. also, add alcohol to the mix, that makes it a little cooler.
