American Water Works Association's Computer Modeling of Water Distribution Systems PDF

By American Water Works Association

ISBN-10: 1583213457

ISBN-13: 9781583213452

ISBN-10: 161583771X

ISBN-13: 9781615837717

Laptop versions of water distribution platforms are instruments that experience advanced through the years to assist water procedure designers, operators, and bosses bring secure, trustworthy water at reasonably-priced. This guide presents water pros the fundamentals of distribution approach modeling, together with details on version practise, process exams and measurements, steady-state and extended-period simulations, and water caliber modeling. It additionally covers facts assortment, version layout, calibration, and the numerous makes use of for distribution method machine versions.

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Example text

Pressure-sustaining valves measure the pressure on the upstream end of the valve and throttle to maintain a setback pressure in the system. They are often used on long transmission mains that terminate at a large reservoir. The reservoir feed can then be regulated to ensure that customers serviced along the main have adequate supply pressure. Altitude valves are used in conjunction with reservoirs to automate the filling cycle of the reservoir. A level sensor opens and closes the altitude valves based on two (high and low) level set points.

This section discusses the different methods of linking customer records in the CIS to the hydraulic model. Assigning customers can be a highly automated effort, a semiautomated effort, or a manual effort, depending on the quality of the service address information in the CIS, the land base used for the hydraulic model, and the availability and quality of commercial or governmental geo-spatial address information. The method of allocating demands depends t o a great extent on what records are available to the modeler.

Some utilities do not make full use of the data acquisition capabilities of SCADA systems. This is unfortunate, as the data is of great value to the hydraulic modeler and the operator in identifying system bottlenecks and in improving operational strategies to reduce energy costs and enhance water quality. Importance to Modeling. Historically, only the most critical operating points were monitored via SCADA. This is because of the increased cost of additional field devices and communication lines.

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Computer Modeling of Water Distribution Systems by American Water Works Association


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