Heatpipes

[bloodline]

Karlos wrote:
Hi,

Does anybody know if/where one can obtain straight sections of heatpipe (preferably bendable, but without breaking it) ?

I'm thinking to turn my case side panel into a heatsink for my BPPC. There really isn't much room for more conventional fan-based cooling and I thought I could bring the 040 + BPPC cooler block into true thermal contact with the side of the case (it already is almost)...

You could make them.

[bloodline]

Karlos wrote:
I thought they were part full of some sort of low b.p. liquid?

The highter the boilng point the longer the tube can be, anyway, just get some tiny bore copper piping, crimp+solder one end, half fill the pipe with your liquid (some organic solvent?) evacuate the pipe as much as you can with a small air pump, then crimp the open end closed, solder to make sure you've got a nice seal.

bingo! one heat pipe. (remember hot bits at the bottom, heat sink at the top.)

[bloodline]

Karlos wrote:
Actually, all the pipes I looked at have a cord of some material inside that draws the condensed coolant back to the source by capilliary action, so orientation is not an issue. The cord has to be "wettable" by the coolant for this to work.

My text books must be old :-D

All said, I don't have an air pump to hand or any spare freons kicking about ;-)

Call youself a chemist? :roll:

[bloodline]

-BobW- wrote:
A link for those that are interested.

http://www.cheresources.com/htpipes.shtml

nice link, cheers bob.

[bloodline]

Karlos wrote:

bloodline wrote:

All said, I don't have an air pump to hand or any spare freons kicking about ;-)

Call youself a chemist? :roll:

Even when I was still a chemist, I didn't have my own personal air pump + stash of refrigerant solvents at home :lol:[/quote]

oh you were one of those... the ones who didn't "borrow" equipment and chemicals for... home work... :-D