barryogen wrote:I was using the term "wind chill factor" to dumb it down a bit.
So what is the new phenomenon actually called then? I'd like to look it up and test it's validity.
Wind will chill metal below ambient, hell, go for a short drive, and then feel the leading edge of your bonnet, it is always very cold to the touch.
When I measured it(yep, I'm geeky like that), the leading edge of my bonnet was 12C below ambient after 15 mins at 100km in 24C sunny weather on a drive from Dunedin to chch. I've been considering using the leading edge(first 10-20cm) of my bonnet as an intercooler, but I'm not too sure on the legalities(pretty sure it would be illegal) of putting fins along the front of a car(think like heatsink fins).
I repeat
You cannot cool below ambient temperature by flowing air over a radiator, no matter how much air you push through. It's simply not possible according to the laws of thermodynamics.
Consider a closed system, like a recirculating wind tunnel with air flowing over a radiator. In order to cool the metal below ambient you have to remove energy from it and transfer it to the air flowing over it. If that is possible then why does it occur that way around, i.e. why doesn't the metal cool the air?
Anyway if it were possible it would equally apply to A2A I/C's so no advantage would accrue to W2A I/Cs in this respect.