evap ideas

[teyber]

hey!

i was toying around on sketchup today, and just a quick idea:
http://img260.imageshack.us/img260/6174/evap1ml5.jpg (http://imageshack.us)
Shot at 2007-08-10
http://img247.imageshack.us/img247/6905/evap12kl4.jpg (http://imageshack.us)
Shot at 2007-08-10
http://img184.imageshack.us/img184/2165/evap1withtextlo0.jpg (http://imageshack.us)
Shot at 2007-08-10


My thinking is the cap tube enters into a relativly low flow/high pressure area, then at the corner it would evaporate on the cores. I realize there are LOTS of flaws on this, thats why i would like your feedback. I know the suction line will pull the refrigerant out before it spreads over the cores, but any suggestions? like more flow here, less flow there?

also, what is the usual sizes for a evap? w/h/d?
thanks guys!

[[XC] gomeler]

From what I can tell it looks like the flow would rush around the outside of the evap, completely bypassing the central part of the evap. Problem with this is that the hottest part of the IHS is right in the center with the cores. That's from 20 seconds of looking it it, find a way to force the refrigerant to traverse over the center and you'd see larger improvements from my general understanding of evap design.

[teyber]

http://img530.imageshack.us/img530/7325/evap1fix1kw1.jpg (http://imageshack.us)
Shot at 2007-08-10
better?

[tim-]

if you're able to mill you can do hell of an evap if you just want to :)
refrigrant is as humans. they take shortest possible way ;) it will go straight to exit :(

make something like cryostar or eleven if you're looking for maze style.

regards
Tim

[teyber]

alright will do :D

I do NOT have a mill, but ive got something up my sleeve. I can't do 3 axis stuff well, but i can do 2 axis stuff.
it involves a drill press
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=538
a sliding vice
and a mill bit

Also, the cost of coppor is ridiculous :( would aluminum be o.k.?
and could i build it to fit in the cryostar or chilly1 holddown?

also, which of these bits do you t hink would be best?
(item number please, for some reason this site you cannot link ot the page you are looking at...)

[tim-]

as you're aiming for square evap it's kind a hard to use those..

but honestly I've been fighting and making my own on lathe and then finish the last things in the miller. I will proberbly stop doing that as it takes ~2H/evap from beginning to finished produkt brazed and lapped. A good evap incl encloser cost less then 60usd, not worth the time.

regards
Tim

[teyber]

yes i know i couldn't put a square evap in those, but i could get a round evap :D what are the dimensions of the chilly1 07? i know a place where i can get some coppor, just its expensive...

And how tall should it be? and how much thickness should i have from cpu to evap? i mean like the bottum of evap... How far Not to drill? im thinking a cryostar shape, and see if i can buy a mounting thing off of him.

[tim-]

42mm is most round evaps today.
it's as simple that copperpipes is availabe in 35,42,54mm 42 suit's our neds best thosedays as cpu isn't bigger then that.

height something between 30-40 mm is good for cpu and 4-8mm thick bottom.. we can't tell all our own secrets ;) you have to try it out :)