Quote:
Originally Posted by X25
I'd not cut the beam; period. We talked about installing in series vs. parallel, and I think the current examples so far have been in series. If I were to switch, I'd definitely do in parallel, but that might reduce the effectiveness of individual cores (since the flow will be split), but I have no idea if that would have a significant impact.
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Half the flow per unit means half the flow velocity and a quarter of the pressure drop. Although that would then result in slightly more flow and velocity, the time in a core would stay pretty close to the same. We'd have to know something about the film coefficient of oil vs velocity to carry this much further, and I don't know if I saved enough of my work notes from working thermal transient problems with water and steam to even make a guess.
I *might* consider re-shaping the bottom of that beam locally (and adding a little structural compensation) to "encourage" some of the air to impinge upon the topmost fins of the cores. If I thought the alloy was weldable and if I could find somebody to do that for me (don't think I'd want to tackle welding any HSLA steel myself)
Norm