Re: Fans...


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Posted by APB in Frigid NY on Friday, February 01, 2008 at 21:37:33 :

In Reply to: Fans... posted by MoparNorm on Friday, February 01, 2008 at 20:54:45 :

Where does the power come from that runs those electric fans?

If it's so energy-efficient to use an electric fan, why not an electric power steering pump, electric water pump, and electric oil pump?

The answer is: it's not more efficient. Every transformation of energy is less than 100% efficient. There is loss, in other words, in taking an engine's rotary output, converting it to electrical power, then using that power to drive a fan or pump.

The electric fans may, per se, be more efficient, (more cfm per hp) but the energy transference to get them going and keep them going is still less than 100% efficient.



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