With regard to:
" Reducing water flow per se never improves cooling. The value =
of a restriction is that it builds pressure inside the engine, albeit =
at the cost of water flow. As long as the reduction in water =
flow is not excessive, then there's a net benefit. The trick is =
to add just the right amount of restriction, I guess only trial =
and error will work here."
I gotta take issue here. Pressure does not improve or worsen cooling. =
Pressure only changes the point at which water is converted to steam.
I grant that steam in contact with metal is not as good a heat transfer =
interface as water to metal but pressure itself will not help cooling as
long
as you maintain the liquid phase.
Flow rates, on the other hand, can impact the macro system and the micro
system in the sense that laminar flow (or flow below the transition point=
)
will =
transfer heat better across boundry than will turbulent flow. Turbulent
flow =
of several things; primarily, in our systems I think, flow rate and
surface finsh.
Since the surface finish of my water passages are relatively rough; slowe=
r
flow
gives me a better chance at maintaining maximal laminar flow and increasi=
ng
cooling effeciency.
Regards,
Jim
B9470139
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