Quote:
Originally posted by gone_fishin
On the plenum. It is obvious by the pics Cathar posted (of the top two sections assembled and water squirting through the jets) that there is much greater force from the center jets then the outer jets. He stated somewhere that this was intentional. A more even presure spread may stagnate the central exit flow somewhat?
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This is exactly right. The water coming out of the middle jets has to force its way through the maze of tubes to get outside of the central area. I actually wanted an imbalance in "free-flow" mode to favor the inner jets. Further, the density of the heat is concentrated more in the middle of the heat source as at the edges, the heat can laterally spread out away from the heat source somewhat before it is cooled, whereas in the middle the heat really has nowhere to go but up, so it makes sense to give a little more focus/power to the middle jets. The plenum chamber is sized in a fashion that promotes this effect.