RE: (PipingDesign) maximum duct velocity

From: <Roger>
Date: Tue May 15 2001 - 14:14:00 EDT

Duct velocity considerations are very much dependant upon what type of horsepower you wish to put to the fan vs the economics of the physical duct. Consider a compressed air line vs a light commercial shopping building. They both may deliver as much air but the configurations are entirely different.

The ASHRAE route or a good industrial ventilation book will lead you on the right path.

Roger Borycki P.Eng

-----Original Message-----
From: PipingDesign@yahoogroups.com at -INTERNET Sent: Tuesday, May 15, 2001 09:09 AM
To: PipingDesign@yahoogroups.com at -INTERNET Subject: RE: [PipingDesign] maximum duct velocity

>I have little problem in Duct velocity.
The rule of thumb I've heard was that 15 ft/sec is the most efficient speed to balance pressure loss against pipe size. I don't think I'd take that to the bank before checking it with ASHRAE requirements. I suspect there's a good deal more to it than a simple rule of thumb.

Christopher Wright P.E. |"They couldn't hit an elephant from <a href="/group/PipingDesign/post?postID=0Em60CZoUscnG6zTLzy1ElfzG4i-rFD8_-6i4-gfF7HTQXJVI7jdLSd3U_ZGOmPusOIPZu0z_jpLOzA">chrisw@skypoint.com</a> | this distance" (last words of Gen.

___________________________| John Sedgwick, Spotsylvania 1864)

<a href="http://www.skypoint.com/~chrisw">http://www.skypoint.com/~chrisw</a>

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Your use of Yahoo! Groups is subject to <a href="http://docs.yahoo.com/info/terms/">http://docs.yahoo.com/info/terms/</a> Received on Tue May 15 14:14:00 2001