-15C Cryostat Cooling

[zoso]

Hi there;

I'm thinkin' of cooling my CPU with a cryostat which has a cooling maximum of minus 15 degrees of celcius.

This will be very simple, an external source of ice cold coolant and a CPU waterblock but i need recommendations on the following;

First, will the flow rate of the cryostat (ex: in my organic chemistry lab. 200-300l/h) be suitable with the CPU water-block?

Or, a recommendation of flow - rate range.

And what brand/model of CPU waterblock(s) would you recommend? I'll be glad to hear from those who used the waterblock which they recommend or not.

Thermaltake and Coolermaster ( 1in 2 out models) CPU cooling blocks are easy to find in my town

Thanks for reading and posting (if possible!)

 

[shawnlizzle =]]

i'm really iffy about prebuilt external chillers

is it phase change? or something else

those pumps are usually pretty weak and you'll need a low flow waterblock like the mcw6000

other than that, give us more info on the chiller

(the thermaltake and zalman waterblocks are crap... please stay away from them)

 

[zoso]

The cryostat has a waterflow range of 800-1000L/h. with a cooling max. of -15 or -20. I'll be using ehtyleneglycol/water mixture. Silicon or Tygon hosing.

I'll order one of them to my laboratory supplier, giving the information above.

I've been reading about ThermalT and CoolerMaster CPU waterblocks and didn't find any review about them.. so you're right about them.

Ordering CPU waterblocks from frozencpu is very easy because they ship all over the world. I think il go for the Swiftech STORM Extreme Performance Universal CPU Waterblock or Koolance CPU-305-V10 CPU Water Block.

They both are expensive but reviews and tech.specs are satisfying. Considering the high flow-rates of the cryostat ill be using these CPU waterblocks will perform well i hope.

Thanks

 

[purelithium]

The main issue for you will be condensation containment. I have no idea how to accomplish this, but it's going to be a huge issue. This is the main reason why people only use water to cool processors, unless they are using intense voltages and heat.

Condensation/frost = fried components.

The condensation will form most likely as frost all around your tubing and probably will coat the waterblock as well. I think you should research more into low temperature cooling.

 

[MasterLee]

You really need to do some reading on Phase Change cooling. You're going to have to treat your CPU just like they do if you're going that cold, I think you may just change your mind .
If you want to keep it simple you'r going to have to find the right temp for your coolant so there will be no condensation. I've done it.....is it worth it ? It was fun but you really have to be paying attention always. I do have a water chiller that I built, but it is not required because my temps don't get over 100 F on my CPU the way I have it set up now, and that's running it full load for over 4 hours (cooling northbridge and GPU also).
Do much reading, there is so much to consider.

 

[zoso]

In lab. i use special tube-insulators made of PU to avoid condensation at 25-28 degrees of celcius.

The problem is the waterblock but i wont be cooling down to -15 or -10.

The cooling capacity will be higher with a "minus rated cryostat" that's why i think of using one like that..(-15) My operating temp will be around +10 degrees at which (the little or no condensation) won't be a problem.

Finally which CPU waterblock do you recommend?

The Swiftech STORM or the Koolance CPU-305-V10?

To be honest i'm likely to go for the Swiftech because of the reviews, technical information etc... around.

Thanks

 

[purelithium]

Will this system be run in a high-humidity area? basement? or is it climate controlled? You need to find out the typical humidity in your area and then calculate the dew point from that, and make sure you are keeping your system temperature ABOVE that dewpoint, or no matter what you do, you will have condensation dripping all over the place.

Have fun replacing the Mobo, Video card, and CPU if you don't.

 

[shawnlizzle =]]

condensation can be easily prevented by using the right insulation... a lot of people use phase change and their computer isn't frying

even thought the pump might be rated at 800-1000lph... we really don't know the head pressure on that pump. the flow rate is messured in a resistant free environment. cheap pumps drastically lose flow when encountering restriction.

i would usually recommend the storm to all of the normal watercoolign loops that. however, in the case of a chiller where more and more additives are needed to keep the water from freezing, i would stay away from the storm. the small jets will be easily clogged up by those additives and thus hugely impacting performance.

all in all, good or bad pump, i would stick with the mcw6000 for its unrestrictiveness, resistant to clogging and full metal construction(plastic tops on waterblocks might crack), it should be a good choice for waterchillers