Al Gietzen wrote:

>
> The other point is the since the rad inlet is limited to ~210F, we
> know that the larger the temperature drop, the lower the average
> radiator temp (goes down by half the increase in the delta T), and the
> larger the radiator core needed to dissipate the heat; a weight and
> space factor.  For an inlet air temp of 80F, a coolant temp drop of 50
> degrees needs about 15% more core than a 20 degree drop.  Not a big
> deal; but something to consider.
> Al
>

Al, with the weight savings of the EWP (about 6lbs), you can add another
GM core.  In my proposed design, space won't be a factor.  But wouldn't
I need to then open up for more cooling air, or is that 15% figure with
the same air mass?

Yes; you would also need more air (=more drag) because of the smaller
difference between the air temp and average rad temp.  The rough 15% number
assumes the same amount of heat rejected.

Al