Quantifying the Economy of Water Supply Looped Networks
Publication: Journal of Hydraulic Engineering
Volume 133, Issue 1
Abstract
The economic advantages of a looped network have not been explicitly considered in the objective function of optimization models found in the literature. This paper introduces a new formulation and methodology in an attempt to give a practical solution to this problem. The new formulation consists of a nonlinear optimization model that is solved by classical differential calculus and the Newton-Raphson technique. An example shows how the looped network can be less costly than a branched one. Previous research usually optimized the network for a given design demand, but the value that should be specified as the desired network reliability has not been reported so far. This work shows how to obtain not only an adequate value for the reliability of a looped network but also the appropriate design demand, based on a thorough cost analysis. A detailed example illustrates the performance of the methodology.
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Acknowledgments
To the late Cristina Chiong Rojas, author of the Chiong formulation and method, who unfortunately passed away in 1997. The present work is a natural continuation of her research. The writer expresses his gratitude to the reviewers and the ASCE staff for their contribution to the improvement of the paper. Note: The two papers that originated in Cuba can be found in the Center for Hydraulic Research library upon request to [email protected] or to the writer.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 133 • Issue 1 • January 2007
Pages: 88 - 97
Copyright
© 2007 ASCE.
History
Received: Oct 26, 2004
Accepted: Apr 11, 2006
Published online: Jan 1, 2007
Published in print: Jan 2007
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