air bubbles in water cooling system with maze2

[chefmws]

i just finished setting up my water cooling rig.
it consists of a 500 gph mag drive, heater core from a geo metro (new),120mm sunfo fan, marine junction box as a resavoir, and a maze2 waterblock.
i have it routed as follows
rad -> maze2 -> res -> pump -> rad
when i got it primed and filled up the res fully i saw a small stream of bubble from the maze2 on the exit side of the block. the block is the lowest point in the system.
i have the barb connection in the center of the block as the inlet and the other one as the outlet. should it be setup that way? is the water path in the block causing the bubbles? it does not seem to be causing any problems i was just wanting to know how to get rid of the bubbles?

 

[MrThompson]

Rotate the block while the pump is one until the bubbles cease. If they don't stop, there is a leak somewhere letting air into your system.

 

[chefmws]

i just posted a reply to your post in the Hard forum

 

[MrThompson]

Yep I saw that. I thought I would post to both forums for the benifit of the readers. I don't have answer other than sealing your pump and making sure your hose clamps are tight.

 

[WarCon]

I have been reading my thermodynamics books and saw an interesting note about turbulent water. I guess it is more efficient at pulling heat from and object. It makes sense, as turbulent water isn't moving in lines of laminar flow where only the outside flow is contacting the transfer surface. Brings to mind a whole new set of waterblock designs I had canned because I thought them silly at first. Like having small propellors or even complex channeling on the intake to add turbulence and break up the laminar flow.

If your not leaking then maybe your flow is strong enough to cause turbulence and your seeing released gas. If you seal your reservoir, your system should come to an equilibrium where the gas will stay trapped in the water.

 

[MrThompson]

Doug Painting has a slick waterblock design with a propeller inside. The thread is at Hard Forums.

 

[WarCon]

Thanks man, I haven't seen that one yet. I want to build my own block, but not out of a block of copper. What do you think about taking an alpha PAL 6035 block (kinda big I know) and encasing it in plexiglass and making the water run diagonal across it. No way it could set up laminar flow and aluminum coughs up heat easier than copper. I know about dissimilar metals, but doesn't water wetter minimize that issue?

Do you think the block would work well?

 

[MrThompson]

The block you propose would probably work fine. Of course I can only speculate from what I have read as I have not built one. I am sure you have read the articles at Overclockers.com and Chip Eckert?s Site about waterblocks made from heatsinks.

I am not a big fan of mixing aluminum and copper. Water Wetter helps but 15% antifreeze would be advised added insurance.