On 7/30/2018 3:53 PM, Jeff Whaley jwhaley@datacast.com wrote:

We know the Fluidyne series of oil coolers work well to cool our oil ...
Does anyone care to comment on how they might work as primary radiators for the water jacket if placed in a Vee formation? Open at the front and narrowed together at the back as per diagram attached. I think in most installations this is a more efficient air flow path.
The DB-30618 x 2 have 0.75 inch connectors and 210 sq in of surface area Vs the GRI-2-58185-X Griffon radiator with 247 sq in of surface area.
Jeff

1st, let me say, 'I don't know'. :-)

Having said that....

If you're doubling the face area vs a single cooler perpendicular to the duct, then it will probably cool a bit better, but nowhere near twice as good. If you're feeding that configuration from a straight duct, my money would be on most of the flow being through the last third of each cooler. It looks like basically a two sided wedge, and I can say from experience that a wedge diffuser will do what I described, unless the downstream end is pinched down so it almost touches the face of the cooler. Perhaps a flow divider (more or less a diamond shape) to supply the pinch effect would balance the flow.

It's easy enough to see the effect. Get a couple of junk coolers (anything would do to test, as long as they're the same cooler). Mount them in a cardboard duct using (wait for it...) duct tape, and feed it air using your leaf blower. Tie a thread (yard works better; it's lighter for it's cross section) to a thin stick, and move it around the exit faces. You'll quickly see where the air is moving through the cores (and where it's not).

Charlie