building a heatpipe
 

Right Section?

what would be a good fluid, fluid level, and pressure for the heatpipe i am building?

and whats an effective way to charge and cap it?


thanks

Unless you've got a particularly specialist application, you may well be better off buying one from a company who already make them. Link to one such company in the UK at the bottom of this post (google will have more - I just had that link to hand as I was toying with using one to cool the NBridge on a potential NF4 SLI system)

http://www.heat-pipes.com/

thats exatly the link im looking for BUT i need something in the US...


i couldnt even find that one on google :eek:

Odd, I couldn't find anything that looked promising in a quick look through google either. Still, heat pipes are fairly light so the UK one will probably ship them fairly happily, although you'd get stung by the current price of the dollar :(

I also found very little info, but limited Googling.

You'll be experimenting, from the looks of it... (Good Luck!)

I'll let you know if I come across something usefull; I also need it for another project.

actually, you can do it. at least if you have enough equipment...
benchtest.com
Heat pipe1
HP2
HP2.2

edit: Maybe try TTIC, they produce HP heatsinks sold under different brands.

Thanks lukr; that's all the links I had ;)

How to heat pipe
 

I use flourinert FC87. or Novec hfe7000 fluid (3M) they boil at 30-34 C. Although you could use acetone (boils at 57C.) as a cheaper solution.

I bring the fluid up to boiling temp using a film heater (OMEGA) until I see a steady stream of vapor coming out the top. This is called out gassing and will provide best performance.

once you have a steady stream of vapor cap it(screw on?) then let it cool down.

In most cases a couple of thimblefulls of fluid is all you need. you have to make allowance for boil off during the outgassing .

you can use cotton or steel wool (000 fine) for a wick , ,my choice these days is copper wool

If your looking for some US heatpipe manufacturers, heres a few links:

Aavid Termalloy
Concord, NH
www.aavidthermalloy



ADDA Corp.
Campbell, CA
www.addathermal.com



Delta Engineers
Sunset Beach, CA
(714)840-9673
deltaengineers@usa.com



Enertron, Inc.
Mesa, AZ
www.enertron-inc.com



Noren Products, Inc
Menlo Park, CA
www.norenproduct.com



Radian Heatsinks
Santa Clara, CA
www.radianheatsinks.com



Thermacore, Inc
Lancaster, PA
www.thermacore.com



Thermshield, LLC
Gilford, NG
www.thermshield.com



Hope that helped. If you need, I can post phone numbers for those companies, but I'm sure their sites have it somewhere on there.

Here are some links you might find helpful too:
http://www.electronics-cooling.com/h..._article2.html
http://www.electronics-cooling.com/R...6/sep96_02.htm
http://www.electronics-cooling.com/h...03_may_a4.html

the article from the November2004 issue, P.19 would be helpfull too. Not sure wher to find it online though.


"Use of heatpipe cooling systems in the electronics industry" By a buncha dudes with crazy names that i dont feel like typing out. Maybe the gas fumes in my room are making me even more lazy than normal.

Sorry, left that one out. Here it is: http://www.electronics-cooling.com/h...04_nov_a1.html