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Piping System Friction
Piping System Friction 87

3.10 Summary

Care in determining pipe friction for a prospective HVAC water sys-
tem cannot be overemphasized! There are so many systems in opera-
tion where too much pump head has been applied, and this excess
head is destroyed by balance valves and pressure-reducing valves.
System efficiency is described in Chap. 8; it emphasizes the need for
care in computing pipe friction and in the avoidance of piping acces-
sories that waste pumping energy.

3.11 Bibliography
Cameron Hydraulic Data, 15th ed., Ingersoll Rand, Woodcliff, N.J., 1977.
Engineering Data Book, 2d ed., Hydraulic Institute, Parsippany, N.J., 1990.
Mohinder, L. Nayyar, Piping Handbook, 6th ed., McGraw-Hill, New York, 1992.
The Handbook of Steel Pipe, Bulletin AISI SP 229-884-15M-SP, American Iron and
Steel Institute, Washington, D.C., 1984.

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