Research Article
Feb 1975
Removal of Air from Water Lines by Hydraulic Means
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 101, Issue 2
Abstract
Air is introduced into water transmission lines through vortices at intakes, pumps, vents, and other causes. This results in loss of capacity, surges and blow backs, difficulties in filtering operations, corrosion of lines, and reduction of pump efficiency to name a few. The best solution to air problems is to prevent the introduction of air at the intake. Other means of air removal are air relief valves and by the inertia of the flowing water. No conventional similitude exist to study the time of clearance of isolated air pockets and results of Froudian scale model tests are very conservative. For pipe sizes below 1 ft. (0.30m) the clearance of isolated pockets may require higher than practical velocities.
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Published In
Journal of the Hydraulics Division
Volume 101 • Issue 2 • February 1975
Pages: 243 - 257
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Feb 1975
Published online: Feb 3, 2021
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Authors
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Paul E. Wisner, M.ASCE
Mgr., Hydrologic Sciences Div., James F. MacLaren Ltd., Environmental Engrs. and Scientists, Willowdale, Ontario, Canada
Farrukh N. Mohsen
Research Asst., Univ. of Waterloo, Waterloo, Ontario, Canada
Nicholas Kouwen, AM.ASCE
Asst. Prof. of Civ. Engrg., Univ. of Waterloo, Waterloo, Ontario, Canada
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.