Need info on building phase change system

[blake_rateliff]

I'm going to be building a phase change system soon but I need to know a few things before I go to order parts.

Found a compressor that takes r22 here
http://www.under-the-ice.com/produc...&products_id=75

Should I use this compressor?

Should I use r22 or r404a or something else? (propane is not an option for me because my mom says so:mad: )

If I use r22 what kind of temperatures might I expect?

Will this compressor run r404a after putting in the proper type of oil?

If I use r404a, what kind of refrigeration shops might I be able to get the unit charged at?

If I use r22 how would I calculate the proper capillary tub length and diameter?

If I need to post a list of other parts I'm planning on using just say so.

Thanks

[Moc]

You can use this compressor (but rotarys always are very ]]]]noisy[[[[[ ). Compressor is made for R22 so you should use it. R404a would a few ° C better but you have to change oil to Polyester-Oil. Then you can use R404a. I think you will able to get -40°C @ 150W with R22. Sry for my english...

[LukeXE]

That link to under the ice doesn`t work (for me)

R404 will be better that R22, but you must have compressor with POE oil. You could use R507, it has ~ -47*c boiling temp.

R22 evaporates at -40*C at atmospheric pressure, we will say what temperatures you can expect, when you will tell us what cpu do you have, other parts of your DD system ite. ;)

Yes, you can change mineral oil to POE oil, and then use R404a.

About cap tube lenght, you must tell us to what kind of load your unit will be designed.

[[XC] Lead Head]

I'm going to be building a phase change system soon but I need to know a few things before I go to order parts.

Found a compressor that takes r22 here
http://www.under-the-ice.com/produc...&products_id=75

Should I use this compressor?

Should I use r22 or r404a or something else? (propane is not an option for me because my mom says so:mad: )

If I use r22 what kind of temperatures might I expect?

Will this compressor run r404a after putting in the proper type of oil?

If I use r404a, what kind of refrigeration shops might I be able to get the unit charged at?

If I use r22 how would I calculate the proper capillary tub length and diameter?

If I need to post a list of other parts I'm planning on using just say so.

Thanks


Although im not sure, i think other refrigerants such as r22 or 404a are actually more poisiness then propane, but im probably wrong.

[LukeXE]

I think he means (his mother :D), that propane is very explosive, but R404 or R22 aren`t.

[Carlz0r]

I'd say go with r404a if you can get it at a decent price, if not, you can get r22 and a manifold for quite cheap.

[blake_rateliff]

Thanks for all the help guys. I'm expecting about 150W-175W heat load from a
athlon 64 3200+ venice. Right now I have the cpu at 2.75ghz with 1.67 volts on water cooling. I think I'll stick with r22, so if anyone knows how to figure the capillary tube length for r22 i'd really appreciate it. Also I forgot to ask what kind of capillary tube I should use. (I found a hardware store where I can get 10ft of 0.030")

[[XC] Lead Head]

Thanks for all the help guys. I'm expecting about 150W-175W heat load from a
athlon 64 3200+ venice. Right now I have the cpu at 2.75ghz with 1.67 volts on water cooling. I think I'll stick with r22, so if anyone knows how to figure the capillary tube length for r22 i'd really appreciate it. Also I forgot to ask what kind of capillary tube I should use. (I found a hardware store where I can get 10ft of 0.030")

A single core venic, even at those clocks and voltages wont put out near 150-175 watts, more around 90-110 watts

[Ssilencer]

A single core venic, even at those clocks and voltages wont put out near 150-175 watts, more around 90-110 watts

I used 10,5ft of 0.031 with a venice at 3400mhz with really nice results.
Maybe if you are thinking on an upgrade, put a little less than that, about 2.80mts is good enough.

[Xeon th MG Pony]

they are all equally flammable when inside a system and just the same when leaking due to the aerosolized oil, but of course this wrecks the R-290 bashing, so you may choos to ignore that small criticle fact.

And when R-22 or other such refrigerants burn they are deadly and toxic, and corrosive, and carcinogenic all at once this includes R-134a and other such HFCs

[blake_rateliff]

Thanks again for all the help guys but I still have a few more questions about capillary tube length .Also I do realize that all of the refrigerants are somewhat hazardous and if given the option I would have used propane, but no matter how I try to persuade my mom(read: bribe:devil:) she still won't let me use propane.

Anyways here's my questions:

-If I were to put in 10.5 meters of 0.031" capillary tubing as was suggested, will I
be able to upgrade to a Pentium D 805 and overclock it without running into issues with the unit not being able to keep the cpu cool when loaded?

-Is there a formula for figuring out the length that the capillary tube should be?

-If the capillary tube length is designed for more heat output than the cpu
produces, will it have negative effects?

[Xeon th MG Pony]

basically it comes down to a choice, load Vs temp, more load will result in higher temp, Les load will equal lower temp, the art of tuning is finding the best temp Vs load balance, so you may design the system to handle more load then needed and the only penalty will be a slightly higher temp, but then again that really doesn't matter to much as quality and efficiency are more important then the bottom lines, and such IMO,

[GuGaCoSa]

Man,just one think,10.5 FEET,not 10.5 METERS =D
everything beetween 2.7m and 3.2m will work ok,only tuning with charge will tell you what is the best.

[[486]]

yeah same thing as you on the propane thing,
but im gonna get some r-22 as soon as i'm cirtified,

back on topic, i used 10 feet of 1/8" tubing on my first phase so if you can't find cap tube then you have a backup

[Ssilencer]

']yeah same thing as you on the propane thing,
but im gonna get some r-22 as soon as i'm cirtified,

back on topic, i used 10 feet of 1/8" tubing on my first phase so if you can't find cap tube then you have a backup

10ft of 1/8 tubing????:eek:

[LukeXE]

Hehe, as you see, everything is possible :D Really that has worked good ?

[Xeon th MG Pony]

*Blink* the mass flow on that must have been insane! we use that as feed tube for when a distrobuter is used due tot he fact it is low resistance!

[[486]]

yeah, it sucked, and i used r-12 :hitself: and a 12000 btu rotary, then got a frige's captube, compressor and then it worked better

back on topic now!