Backward-Curved Fans

Kavanaugh, Steve
May 2012
ASHRAE Journal;May2012, Vol. 54 Issue 5, p81
Academic Journal
The article offers the author's perspective on why he finds it upsetting that electrical engineers can make fractional horsepower fan motors with efficiences near 90%, while mechanical engineers seem to be content to couple them to fan wheels with efficiences of around 30%. He stresses that mechanical engineers can do better with energy efficiency. He notes that one way of rewarding manufacturers of fan wheels is by changing the standars for unitary air-conditioners and heat pumps.


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