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Author Topic: how to calculate the equivalent diameter of a square(rectangular) duct  (Read 4441 times)

mehran mahmoudi

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hi every body.
does any one know how to calculate the equivalent diameter of a square or a rectangular duct.
I was reading the thunderhead's (modeling jet fan  document) .In this text the equivalent diameter of a  square 0.25 m duct is (equivalent diameter 0.2821 m).

thanks.
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Jared

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http://www.engineeringtoolbox.com/equivalent-diameter-d_443.html
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mehran mahmoudi

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hi
thanks for response JARED. ;)
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