Fan efficiency should be judged wire-to-air — from electrical input to useful air power — not from motor nameplate alone. Articles cover FEI metrics, part-load behaviour, annual energy calculation and the design factors separating premium EC platforms from commodity fans.
On 20 July 2026, China's National Standardization Administration opene...
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Forward-curved and backward-curved centrifugal fans can share a diamet...
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How do radial, forward-curved, backward-curved and airfoil centrifugal...
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An FEI of 1.25 does not mean 125% efficiency. This engineering walkthr...
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Both wheels turn in a scroll and both move air outward, yet they suit ...
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Why can a backward-curved centrifugal fan run quieter at the same airf...
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How do you use a fan performance curve to select the right fan? This e...
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Size a fan motor from the real duty point—not from CFM alone. This wor...
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Compare a large fan with a parallel array at the same airflow and pres...
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A fan curve only means something when you know how it was produced. Th...
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