Making a heatsink, what do you guys think?

I was thinking about filling it with ether because its boiling point is ~30C

What are you going to do about condensation?

I've tried running water through a very similar pump (from a dehumidifier) in the past, it ran fine first day, left it off for a few days, when I came back it was rusted internally which jammed it. I believe there is some sort of oil that resides in the pump which was washed out by the liquid. Don't run water through that pump (I know you said you would not). Also water would not vaporize like you would want for proper cooling. I'm not sure which water-like liquid would vaporize properly, without removing the oil from the pump.
You could try liquid propane if you have the ability to get it properly pressurized/filled. That is very similar to the coolant used for AC units, of course if you could get your hands on chlorodifluoromethane that would be best, (just don't let it leak, it is really bad for the enviornment).
If you do use coolant (propane or chlorodifluoromethane) condensation will be an issue as you will drop the temperature of the heatsink below air temperature.

Edit: Actually the pump you are using is exactly the same one I mentioned using.

Why don't you just use that heat exchanger what it was meant for. 134a refrigerant. Just get something so it would not condensate like puddy. And if you want you can add a fan and also cool yourself when it's hot out.

But if you really wanted to cool it down you could buy r12 from ebay.

You might have to go to the auto store and get some A/C lines or go to the junk yard.

This thing is going to be exactly like a GIANT heatsink

LOL, maybe you dont understand

I bought an A/C unit for making a phase change, with the phase change ia am going to use the compressor and the condensor... but i cut off the evaporator because i didnt need that for my phase change..

So now i have this evaporator laying around and i am looking to turn it into just a regular heatsink

Yeah, thats what i was planning 6x120mm fans, i think it would fit perfect.

And that is my main problem right now, i dont know what to use as copper block for this... cuz it needs to fit 20 heatpipes (=

I would make my own, and am comfortable if it takes a little welding.

Any ideas for a block would be MUCH appreciated, and it need to be hollow as you can see.

And thanks for the post, you are the first person who really gets my plan (=

I changed the design a bit, so now each heatpipe will have its own pipe through the evaporator/radiator

What do you guys think???

Click on it for a larger image (=

lol. I thought you ment you did not want to do that. But hey you have your own little A/C unit to cool your CPU maybe even your GPU. But any ways this looks cool show us some pics of each of the steps you take to build this.

Unlike your CM Centurion 590, the CM 690 has a second fan grill in the bottom panel, in addition to the one directly below the PSU:

http://www.supremelaw.org/systems/ [...] -GP.29.jpg

http://www.supremelaw.org/systems/ [...] -GP.53.jpg

http://www.newegg.com/Product/Prod [...] 6811119137

Why not punch a hole in your floor, directly below
that fan grill, and bring air-conditioned cold air
directly into the chassis?

That approach will save you a ton of work
getting this huge radiator hooked up and working.

A proper floor register e.g. sheet metal, could be connected
to a standard duct e.g. for a household clothes dryer:
the duct would direct the cold air straight into that
bottom fan grill.

MRFS

hey overshocked, im going to class right now, but when i get home ill bust out my thermo and heat transfer books and find a a liquid that will work well (right boiling point at a pretty low pressure, and a high enthalpy). you have an email i can send you some stuff at so i dont have to post it all?

Yeh, I have an idea: Use water. Specifically, water vapor at low pressure. Water can boil at nearly any temperature if the pressure is right, and it absorbs a great amount of energy going from liquid to gas.

So, do a little research and you'll find the pressure you need.

Here's an idea: Heat it up! When it cools the volume of air will decrease, creating negative pressure compared to the atmosphere.

EZ who?

R134A would probably work, but I'm still thinking about how well it might work to heat the entire assembly up to boiling, add a specific amount of boiling-hot water, then cap it and let it cool.

An angle you might not have thought of: As temperatures rise, pressure rises. That means the boiling point of whatever you put in there will continuously increase as temperatures increase, that is, unless you have an expandable vessel to allow a volume increase.

Im also going to test and see how different amounts of propan will affect the cooling performance of it.

This will be a great air cooler.