http://www.fluidyne.com/pl_theoc.html
Really liked
the DB 30517 (3.75" thick double pass model) Will probably use this one
on my -8.
Tracy
Perhaps you mean use
“two” instead of “this one”. I looked closely (longingly) at the
fluidyne when I was in the market for a cooler; but they just don’t make on
with the capacity for the 20B. One DB 30517 would handle neither the
flow nor heat rejection needed; however 2 in parallel would do it. At
least that’s what my analysis says.
Al
Nope, at
least I don't think so. Here's my take on it.
The
Mazda cooler has 180 CU In. core area and gives me enough cooling for the
13B. I'm assuming for now that the dimensions for the Fluidyne are core
area (must check) which give it 275 cu in, which is 153% of the Mazda.
Pretty good match, at least on paper. The "effectiveness
quotient" for the Fluidyne at almost double the thickness is not as good
but I'm hoping the much better ducting and pressure recovery on the -8 will
cancel that out. The higher delta T air temp will give less cooling
drag, at least in my universe : )
In
any case, the main -8 mission calls for 100 HP at >=18,000
ft. It'll work.
Tracy (please don't
ask me to define "effectiveness quotient")