SOLVED Why is it so...

[Kryten]

With a "descent" water cooling system there should never be a need for any system regardless of what it is (with the machines we are dealing with) to need to use any cooling fancier than water.

Water is cheap, plentiful, non toxic, non corrosive, non volatile, no special conditions or containers.

With some water systems capable of between -50c and -20c, why would you need to be any cooler.

Why persist in trying to find better liquids, why not look for better ways of disapating the heat i.e. better coolers fans etc and leave the fancy stuff to the guys in the lab.

 

[Shadow ÒÓ]

why try for 150 fsb when you have 148?

I'll agree there is a stopping point to cooling....but I don't think it's above 0C or 32F.

no water system will cool to -50 unaided. And at that point the water is the backup.......not the cooling system. It would cool the cooling system.

 

[bdf24]

What I want to do when I get the room sometime is buy a small refrigerator and run my reservoir in the freezer. With enough antifreeze to keep it from freezing it should get pretty damn cold!

I know there are a few people around this site that are doing it.

But then again that is actually a better way of dissipating the heat isn't it!

 

[Hoot]

bdf24 (Apr 25, 2001 05:40 a.m.):
What I want to do when I get the room sometime is buy a small refrigerator and run my reservoir in the freezer. With enough antifreeze to keep it from freezing it should get pretty damn cold!

I know there are a few people around this site that are doing it.

But then again that is actually a better way of dissipating the heat isn't it!

Be careful with that reasoning. Refrigerators and freezers do a good job at what they are designed to do. Namely, utilizing good insulation, cool a "sinking thermal load" to a given temperature and maintain that temperature using as little energy as possible. A "sinking thermal load" is like a 6-pack of beer. It starts out at room temperature and slowly gives up that heat on its way down to the ambient temperature specified by the thermostat in the refrigerator. The beer does not generate additional heat. Its temperature is "sinking" down to ambient. Electronics equipment continue to generate more heat as long as they are running. Some (read not all) "energy efficient" refrigerators and freezers (especially small ones) can not keep up with a continuously generating heat source, even a measly 100W one. Hard to believe...

Hoot

 

[Kryten]

bdf24 (Apr 25, 2001 05:40 a.m.):
What I want to do when I get the room sometime is buy a small refrigerator and run my reservoir in the freezer. With enough antifreeze to keep it from freezing it should get pretty damn cold!

I know there are a few people around this site that are doing it.

But then again that is actually a better way of dissipating the heat isn't it!

this are the ideas I'm talking about why use toxic etc etc etc when with a little imagination water will do more than nicely.
Yes shadow good point of cause I'm not suggesting that there isn't a need for other devices just that water fits the bill.

 

[ken257]

Hoot is absolutly right about freezers not being able to deal with a large heat source! You much be carefull in your freezer selection and setup to get something that works! I do use a freezer to cool my TBird. It is a 5 cubic foot unit and it is just enough for the job and you can forget about adding pelts to the setup. The water is maintained at -13C under full load(24hours prime95), and -17C before I turn the system on. Under full load the compressor never shuts off and I had to add a 120mm fan to cool the compressor. I don't think a smaller unit with a resivour in it even has a chance of working. I have 15+ gallons of antifreeze/water in mine, no resivour just right in the freezer so it has direct contact with the sides of the unit where the cooling takes place. I am thinking of adding even more water to have grater contact with the sides. Overall the I am very happy with the results I got but it is not that simple as just slapping something in a frig and getting results.

 

[bdf24]

Yes I understand about the large amounts of heat a pc can put and trying to cool them down with a refrigerator! But I'm only talking about cooling the water off in the fridge! Not the pc! And yes I know I would have to insulate the tubing as well as the water block in the pc.

It's just that while running a large peltier. I believe you will start running into problems trying to cool the water using conventional water cooling. I don't think a radiator alone would be enough! So your going to have to use more extreme methods.