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Drinking Water Engineering and Science An interactive open-access journal

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doi:10.5194/dwes-2017-12
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
13 Mar 2017
Review status
This discussion paper is under review for the journal Drinking Water Engineering and Science (DWES).
Inclusion of Tank Configurations as a Variable in the Cost Optimization of Branched Piped Water Networks
Nikhil Hooda and Om Damani Department of Computer Science and Engineering, Indian Institute of Technology Bombay, Mumbai, India
Abstract. The classic problem of the capital cost optimization of branched piped networks consists of choosing pipe diameters for each pipe in the network from a discrete set of commercially available pipe diameters. Each pipe in the network can consist of multiple segments of differing diameters. Water networks also consist of intermediate tanks that act as buffers between incoming flow from the primary source and the outgoing flow to the demand nodes. The network from the primary source to the tanks is called the primary network, and the network from the tanks to the demand nodes is called the secondary network. During the design stage, the primary and secondary networks are optimized separately with the tanks acting as demand nodes for the primary network. Typically the choice of tank locations, their elevations, and the set of demand nodes to be served by different tanks, is manually made in an ad-hoc fashion before any optimization is done. It is desirable therefore to include this tank configuration choice in the cost optimization process itself. In this work, we motivate why the choice of tank configuration is important to the design of a network and describe an Integer Linear Program (ILP) model that integrates the same to the standard pipe diameter selection problem. To aid the designers of piped water networks, the improved cost optimization formulation is incorporated in our existing network design system called JalTantra.

Citation: Hooda, N. and Damani, O.: Inclusion of Tank Configurations as a Variable in the Cost Optimization of Branched Piped Water Networks, Drink. Water Eng. Sci. Discuss., doi:10.5194/dwes-2017-12, in review, 2017.
Nikhil Hooda and Om Damani
Nikhil Hooda and Om Damani
Nikhil Hooda and Om Damani

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Short summary
The cost optimization of piped water networks consists of choosing pipe diameters. Networks also consist of tanks that act as buffers between the source and demand nodes. Typically the tank configuration is done in an ad-hoc fashion. It is therefore desirable to also include this tank configuration choice in the cost optimization. We motivate why the choice of tank configuration is important in network design and describe a system called JalTantra that aids the designers of piped water networks.
The cost optimization of piped water networks consists of choosing pipe diameters. Networks also...
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