Quote:
Originally Posted by trader4
I am reading the responses. Why is a fan with a dedicated motor any
different than a "parasitic" fan that uses power from the engine?
The core issue is the amount of power it takes to move the air with
a fan and it's not apples to oranges. I think the comparison is
directly relevant. Did you see what a 10hp fan really looks like?
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The core issue is not the amount of power it takes to move the air... you're right, that stays constant (mostly, I don't have the knowledge to calculate blade pitch, wind speed, etc).
The core issue is the method in which that power is achieved. A dedicated motor vs. an engine designed to do many other things, primary of which, is moving a 4200lb SUV.