"Morgans" wrote in message
...

"Bill Daniels" wrote in message
...
Hey, you're gonna have to heat the diesel fuel to keep it from gelling
so
why not use the fuel as a coolant. If the tanks are of the wet wing
type,
you're almost home free. (I actually had a guy ask me how that would
cool
the engine if I ran out of fuel.)

The real question is, how will the engine cool, once you have the fuel to
the boiling point, and also how rapidly can you boil off a tank of fuel.
--
Jim in NC


Why would the fuel boil? Glycol/water coolant doesn't boil if the engine
temps are normal. I seem to recall the boiling point of diesel is greater
than glycol/water. That would depend on the rate the heat was rejected by
the 'radiator' and the pressure of the cooling system. If heat input was
less than the heat rejection capacity of the radiator, then the fuel
"coolant" wouldn't overheat.

Using fuel as a coolant is a respected technique used by rocket engines and
the SR-71.

Bill Daniels