View Full Version : new idea
Got a new idea last night tell me what you think. I have an ac I bought and got it to the point where I was gonna make a tank for water chillin. But I got to thinkin. What if I made a plastic case to hold a mobo , videocard and hdd and ran everything else external and placed the evap in the case behind the mobo backplate running tubes and wires thru the case and sealing it as best as I can. which i should be able to make a pretty good seal.Use just a standard heatsink and fan and place several fans inside the case to circulate air around the evap and mobo and works. Now the good part hook, up a 50 pound bottle of nitrogen to purge, so theres no atmosphere accept the nitrogen, Im a plumber so I have nitrogen, there would be nothing in the case to make frost and if it did it would be enert cause it would be nitrogen so no shorts. also would have to insulate the case all around accept, say a small part for viewing and could leave a line going to the case with about an half ounce pressure against case to insure no air got back in case. should be able to cool entire unit to sub zeros without having to insulate parts right.?.? put it here cause there no thread for such a thing.
WTH? i don't think you can get this working...because...because...sounds unbelievable :confused: theoretically maybe but don't you need a massive box to get a vacuum in there first before getting in the nitrogen?
hmmm i just can't image - xtreme idea ^^
WTH? i don't think you can get this working...because...because...sounds unbelievable :confused: theoretically maybe but don't you need a massive box to get a vacuum in there first before getting in the nitrogen?
hmmm i just can't image - xtreme idea ^^
dont need a vacuum
just hook up nit bottle and purge it with the gas then even if it leaks a miniscule amount doesnt matter cause I would keep a small pressure against the case from an inlet tube out of nit bottle. Its simple yet eloquent. so the case would be under pressure not a vacum.
box would only have to be big enough for the evap an mobo board, prolly 24"x 24" tops not even that. Oh yeah, for purpose. Im thinkin along the lines for trying to reach records not a continuous setup. for benchmarking fun.
Sheograth
05-13-2005, 10:55 PM
It sounds feasable, it'd take some good engineering, but the concept seems sound.
Im getting two 6800 ultras this week and some muskin redline. When I get my sli rig running Im gonna take my winnie and gigabyte board, a raptor, and my corsair, pny 6800 gt and try it to see what happens so if it does go bad I wont be destroying my best hardware. If it goes well Ill put all my premium stuff in and take to the hilt. Im gonna have some fun next week.
expansionvalve
05-13-2005, 11:53 PM
Good luck with the project, mine is almost completed.
I have an airtight case with vaccum port that holds the mobo and gpu, psu,hd,cd drives are all outside the box. I will be running a forced air evap for case air temp and two water blocks for the chips. Six inches of insulation all round the box, 20 liter glycol/water mix 50/50 res and 1/2hp condensor.
From previous tests I have found that just purging with dry nitrogen isn't much good, it does the trick but evacuation is the only real way to properly remove moisture.
Another issue that has had me scratching my head is the cables in and out of the box.
It's been testing, all this effort and I dont even want to get into clocking. Just want a toy to play with :toast:
good luck
wdrzal
05-14-2005, 01:53 AM
there is nitrogen cooling thread right below phase change,be careful and test materials you use, some become very brittle at those temps and can shatter.Always wear safety equipment. Good luck
Unknown_road
05-14-2005, 02:17 AM
there is nitrogen cooling thread right below phase change,be careful and test materials you use, some become very brittle at those temps and can shatter.Always wear safety equipment. Good luck
he doesn't mean liquid nitrogen!!
vacuming your motherboard isn't a smart plan "expansion valve"! lots of components generate heat and in a vacuum they will burn!
Epsilon
05-14-2005, 02:54 AM
Unknown_road is correct
Allthough, lots of components do not like cold (like capacitators) so the hardware will brake down.
What you COULD do, is make a chiller like you have planned, and put in the same box filled with nitrogen. The outside of the box doesn't need to be insulated now, nor the hoses inside.
The main capacity losses are from moisture condensing on your hoses etc. But if you have dry nitrogen in it, the losses are minimal :).
expansionvalve
05-14-2005, 05:21 AM
vacuming your motherboard isn't a smart plan "expansion valve"! lots of components generate heat and in a vacuum they will burn!
Hi, thanks for the warning although I wasn't planning on running it with the case in a vaccum. I was looking into pulling the case into a light vac to remove as much moisture as I could then just cracking the vac off with dry ofn but thinking about caps now are they oil cooled on a mobo or do they rely on air only?
Unknown_road is correct
Allthough, lots of components do not like cold (like capacitators) so the hardware will brake down.
What you COULD do, is make a chiller like you have planned, and put in the same box filled with nitrogen. The outside of the box doesn't need to be insulated now, nor the hoses inside.
The main capacity losses are from moisture condensing on your hoses etc. But if you have dry nitrogen in it, the losses are minimal :).
ok so Im a noob at this so Im gonna ask some noob questions. you say some components dont like cold, which ones? and how do reallly keep them from getting cold when you are phase change cooling in general. I mean after all they are attached to the mobo that is getting very cold by way of being attached tothe cpu isnt it. Maybe I could just, for lack of a better term, blanket, these components so they don't get directly cooled and what heat that is normally in them can be centrally contained enough that they wouldnt get too cold. they would get cold just not as cold? I gotta get a probe btw what do you guys use?
Russell_hq
05-14-2005, 09:39 AM
You could try adding a bag of silica gel to the case aswell. That would soak up any remaining moisture