Elliott Enterprises provide the Altus GNSS Positioning System to capture data and document existing and NEW Water Distribution Networks, after the Network has been surveyed in Carlson Survey or Civil the next step is to test the design and optimize the distribution of the resource.
We offer training for Carlson Survey, EPANET and Carlson GIS and the integration of the data with GIS software. We recommend beginning the GIS journey by using QGIS – a Free GIS software package developed by the Open Source Software community.
Developed by EPA’s Water Supply and Water Resources Division, USA, EPANET is software that models water distribution piping systems. It is a Windows program that performs extended-period simulation of the hydraulic and water quality behavior within pressurized pipe networks.
Pipe networks consist of pipes, nodes (pipe junctions), pumps, valves, and storage tanks or reservoirs. EPANET tracks the flow of water in each pipe, the pressure at each node, the height of the water in each tank, and the concentration of a chemical species throughout the network during a simulation period. Chemical species, water age, source, and tracing can be simulated.
Carlson Survey or Civil software are provided with the Altus GPS (GNSS) RTK kit to survey the network. This can be done with almost zero error (Elevation). The tools provided convert the network geometry to EPANET format for addition of pipe, junction and valve components.
A Microsoft Excel spreadsheet app provides the program to prepare and optimize time and demand on the network to assist time and flow model real time simulation.
EPANET provides an integrated computer environment for editing network input data, running hydraulic and water quality simulations, and viewing the results in a variety of formats. These include color-coded network maps, data tables, time series graphs, and contour plots.
EPANET provides a fully equipped, extended-period hydraulic analysis package that can:
- Handle systems of any size
- Compute friction head loss using the Hazen-Williams, the Darcy Weisbach, or the Chezy-Manning head loss formula
- Include minor head losses for bends, fittings, etc.
- Model constant or variable speed pumps
- Compute pumping energy and cost
- Model various types of valves, including shutoff, check, pressure regulating, and flow control
- Allow storage tanks to have any shape (i.e., surface area can vary with height)
- Consider multiple demand categories at nodes, each with its own pattern of time variation
- Model pressure-dependent flow issuing from emitters (sprinkler heads)
- Base system operation on simple tank level or timer controls as well as on complex rule-based controls
In addition, EPANET‘s water quality analyzer can:
- Model the movement of a non-reactive tracer material through the network over time
- Model the movement and fate of a reactive material as it grows (e.g., a disinfection by-product) or decays (e.g., chlorine residual) over time
- Model the age of water throughout a network
- Track the percent of flow from a given node reaching all other nodes over time
- Model reactions both in the bulk flow and at the pipe wall
- Allow growth or decay reactions to proceed up to a limiting concentration
- Employ global reaction rate coefficients that can be modified on a pipe-by-pipe basis
- Allow for time-varying concentration or mass inputs at any location in the network
- Model storage tanks as being complete mix, plug flow, or two-compartment reactors
EPANET‘s Windows user interface provides a visual network editor that simplifies the process of building piping network models and editing their properties. Various data reporting and visualization tools are used to assist in interpreting the results of a network analysis. These include graphical views (e.g., time series plots, profile plots, and contour plots), tabular views, and special reports (e.g., energy usage, reaction, and calibration).
EPANET was developed to help water utilities maintain and improve the quality of water delivered to consumers through distribution systems. It can be used to design sampling programs, study disinfectant loss and by-product formation, and conduct consumer exposure assessments. It can assist in evaluating alternative strategies for improving water quality, such as altering source use within multi-source systems, modifying pumping and tank filling/emptying schedules to reduce water age, using booster disinfection stations at key locations to maintain target residuals, and planning cost-effective programs of targeted pipe cleaning and replacement.
EPANET can also be used to plan and improve a system’s hydraulic performance. The software can assist with pipe, pump, and valve placement and sizing; energy minimization; fire flow analysis; vulnerability studies; and operator training.
To whet your appetite before starting your official model or network we recommend watching the following 9 short videos. These Videos are based on the steps described in the EPANET Manual Click here to Start watching!
We recommend completing the EPANET Tutorial to familiarize the user with the software and processes before getting serious with your water distribution model.
IMPORTANT INFORMATION: EPANET is the core “hydraulics engine” used by all software vendors offering Water Distribution Network Modelling (WaterGEMS, Wadiso etc.) These software packages provide additional CAD tools to make the processes more “user friendly”, however the operations and results are the same at NO cost. The EPANET software engine is also available as an plugin for QGIS and other GIS software. We recommend taking the time to evaluate the product as provided below. This software is used extensively in the design of irrigation pressure systems across the world also.
WARNING: The EPANET Tutorial is performed in Imperial Units….RESET “Properties” to Metric on completion of the tutorial; before working with your design in the Philippines.
- EPANET Installation
- EPANET Manual
- EPANET Tutorial
- DXF to EPANET Converter
- DXF to EPANET Manual
- EPANET Excel Add-In
- EPANET Excel Add-In Manual