Why using spiral duct improves duct design – SNIPS article

April 22, 2019  |   News   |     |   1 Comment

In 1948, research by R.G. Huebscher established flow resistance for different shapes of ductwork at equal velocities, which allowed the creation of the duct-sizing calculator or “Ductulator” for picking equivalent sizes of rectangular ducts based on the baseline round duct size.

The Ductulator is a shortcut that only works on paper if you reduce the velocity pressure to a negligible factor around 1,500 feet per minute or less in any ductwork system. At the maximum 1,500 fpm, the velocity pressure is 0.14 inches water column and can be dealt with using balancing dampers. The duct calculator works great for low-velocity designs commonly found in residential and light-commercial work.

Read More by using this link: https://www.snipsmag.com/articles/92773-why-using-spiral-duct-improves-duct-design?v=preview

1 Comment for this entry

    Justin
    March 22nd, 2020 on 7:26 pm

    Long time supporter, and thought I’d drop a comment.

    Your wordpress site is very sleek – hope you don’t mind me
    asking what theme you’re using? (and don’t mind if I steal
    it? :P)

    I just launched my site –also built in wordpress like yours– but the theme
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    coronavirus scare!









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