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Got curious about this earlier: what is a reasonable safe pressure limit for a typical brazed copper pipe phase change system? How much PSI do these systems typically fail at?

Dude, come on. I'm not going to ask how far back you had to look to find this thread, but what made you think that your post was even remotely relevant?

To run binaries as root:

sudo ./*yourbin*

su root (gives you a root shell, then run the cmd as normal)

Seconding "don't install any binary drivers except for the video"

According to Google, N2O boils at arouind -88C at room temperature. This means that it's *warmer* than LN2 by over 100C. I do not know anything about the specific heat of N2O vs LN2 / DICE, but I...

Ar + 134a WILL NOT WORK for your first stage. If it did, everyone would be using it in ss units.

I know that this has been done on the industrial scale, but is it possible on a mineraturized scale? Has anyone attempted this? LN2 is not nearly expensive enough to warrent building something like...

Nitrogen is just as dangerous in terms of asphyxiation as argon is. Argon is a very, very inert gas, moreso than nitrogen, so I would call it less toxic. Whatever though, braze in an open space, for...

Has anyone EVER succeded in overclocking a G5? It's been ages since they were released, but I haven't seen anything *proven*, not even on xlr8yourmac which is usually the best place for this sort of...

In case it hasn't been suggested, www.rparts.com Excellent store. :toast:

Yeah I know it's not good to do *on purpose* but I don't really have any other suitable condensers at the moment and I want the unit to be thin enough to sit next to my computer. As long as it will...

OK, so in the interest of maximizing my available horizontal space, I want to put my condenser like so (it's rectangular in shape.) Would this position (working against gravity) be all right as long...

Hmm, that looks like a compressor that I pulled from a 70s or 80s dehumidifier. Not that this will help you any, but mine was R-12. I never got a HP rating, but it's maybe around 1/5hp?

http://lnglicensing.conocophillips.com/NR/rdonlyres/FBB538DA-256D-4B96-A844-5D147F4441CF/0/quartercentury.pdf

You might find that pdf an interesting read if you haven't seen it in that thread i...

My friend did this on his TI83+ in ti basic, so it can't be a very hard task. What language is this supposed to be done in?

OK, I found this pdf. Scroll down to the middle where it has a schematic of the ln2 production process. It cleared up a lot for me.

I thought that O2, N2, and Ar all had critical temps way below 0c? Doesn't that mean that there would have to be some powerful cooling, especially with the heat generated during compression?

Very interesting, thanks for the link. Does anyone have more information on the type of refrigeration used to produce such low temps?

OK, so I know that n2, o2 etc are extracted from liquified air by fractional distillation (correct me if im wrong.) How do they achieve low enough temps to liquify air? Do they use multi stage...

Following the instructions here, I have successfully modified my webcam to see upper IR light. The webcam I modified is a logitech quickcam 4000. The PCB inside is pretty small, and physically it...

Interesting idea, I don't know of anyone has done *that.* You might want to distribute the evap coils throughout the entire tub if you plan on actually doing it.

Nice idea, but the steel flex hosing is expensive.

Verrry impressive! What kind of temps were you getting on the cascade?

Half of those links don't work and are outdated.

I reccomend www.rparts.com, especially since you live here in the US.

I thought that R22 was mineral oil only :confused:?

There's a jumper block you can set. It's really easy to do, no soldering required.