Typhoon Intake
12-07-2011 | 10:21 AM
#41
NVM, looks like Jimmy Blue did the work on another similar thread:
"At WOT you have no "time over target" to heat the air
in. Even if the manifold is "heat soaked". If you want to
cut down on that, run your fans full time like I do.
The fin surface area of your radiator is about 5000 square
inches. The surface area of the manifold runner is about
25 square inches more or less. I figured up that at 500CFM
your air spends under 5 milliseconds in the runner.
I spent some time tonight pulling heat transfer calcs
off the Interwebs, and it looks like an aluminum runner
of our geometry and 100C (212F, hotter than water
jacket if you're smart) will push 68 watts (yeah) of
heat and raise the air temp 1.9 degrees (yeah) along
its length.
Feel free to check my work."
Nice! I'll check it, but this may be all I needed on the heat soak argument... Thanks Jimmy
"At WOT you have no "time over target" to heat the air
in. Even if the manifold is "heat soaked". If you want to
cut down on that, run your fans full time like I do.
The fin surface area of your radiator is about 5000 square
inches. The surface area of the manifold runner is about
25 square inches more or less. I figured up that at 500CFM
your air spends under 5 milliseconds in the runner.
I spent some time tonight pulling heat transfer calcs
off the Interwebs, and it looks like an aluminum runner
of our geometry and 100C (212F, hotter than water
jacket if you're smart) will push 68 watts (yeah) of
heat and raise the air temp 1.9 degrees (yeah) along
its length.
Feel free to check my work."
Nice! I'll check it, but this may be all I needed on the heat soak argument... Thanks Jimmy
