Quote:
Originally Posted by JulianEdgar
That's not how drag of heat exchangers is determined. The outlet area is of equal importance to the inlet area, for example.
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I strongly suspect you're misapplying the formula. If there is no airflow over the heat exchanger (because it's covered by a nosecone), the windspeed would not be anywhere close to the vehicle speed. For the Model S, the airflow over the radiator appears to come from the fans.
Re. Porsche 911 vs Taycan -- the 911 is slower to 60 mph and the 911 is lighter, too.
There are some good points about electric motors running at lower temperatures than an engine!
Also interesting to note -- the Nissan Leaf has zero battery cooling. Ha!