Hello
As a master degree engineer I have used EPANET since early 1990s. Mostly it works superb, but I have some wishes for future releases.

Profile plots.

1. I would like to make profiles showing both elevation and head in one single plot. In my opinion this would be an essential function for epanet; to visualize elevation, pressure and head is what it is all about.
2. The horizontal axes on profile plots seems to be connected with the graphical distance between junctions on screen. I think it would be better if it was linked to the actual length of links between junctions. Then the profile plot would be correct even if the junctions are placed on the map/screen as a system sketch.
3. If max , min and increment for axes are set manually, it resets every time I run calculations. This I find rather annoying. I want to keep the changes.

Backdrop
4) My fourth wish is that online maps could be used as backdrop, not just bmp-, emf- and wmf-files. Then I would never need any other software for these type of calculations.

Best wishes
FINN HARALD ELIASSEN
Sivilingeniør, seksjon VA

(+47) 98 23 44 28 |55 62 33 56|[email protected]
www.multiconsult.no

I wish to recommend the following easy to implement user-friendly improvements. It is quite frustrating for me to reset these every time I open the program.

There are things which a user may select like:

File>Preferences>Formats. Setting decimals for various parameters. The choice of the user can be saved in the Windows Registry. I use SaveSettings in VB6 , but C will have a different statement. Each time the user opens the program, these setting can be read from the Registry and applied to the Preferences (I use GetSettings in VB6). It now jumps back to the hard coded settings.

View>Options>Map Options>Notation. The font size the user works with can also be saved and read from the registry, as presently, when the program is opened, it jumps back to the hard coded settings.

On the Browser, the selection a user makes, can also be saved and read again. I am referring to what is normally selected by the user. In my case it is pressure at nodes and flow in pipes, Presently it jumps back to no selection when the program is opened.

The options a user has, are all over the menus. One single main menu item could be 'Options' which can include the following in submenus or one large frame with all the settings will be even better.

File>Preferences
View>Dimensions
View>Legends>Modify
Project>Defaults
Project>Analysis options

Thanks

PK

I can't save anything in epanet 2.2.0. Please help
(I think it's a registration issue, but there's not any registration option in software)

License question with the EPA’s release of v2.2.0 from the website. Is copyright holder OWA or contributing authors?

Hello, can I add virtual nodes in epanet?

in types.h the pressure units are ordered like so:
enum PressUnitsType /* Pressure units: */ {PSI, /* pounds per square inch */ KPA, /* kiloPascals */ METERS}; /* meters */
But in the manual (Appendix C4) they are ordered:
Pressure Units Option
0 = psi
1 = meters
2 = kPa

Access violation errors occur with using the stand-alone executable [for some users]. These problems do not occur with v2.00.12.

It is recommended that the pressure dependent demand (PDD) features be included into epanetmsx.exe to allow a user to perform multi-species water quality analysis based on pressure-driven hydraulic analysis. In the current version, Wagner’s equation is used to perform PDA. It would be beneficial if users could also integrate other types of pressure-demand relationships in the model and various minimum/required pressures at the nodes.

Installation issues with “.msi” file. [Conflicts with Windows Defender in some situations and requires a work-around.]

Based on the [Curves] section of the Input File Format page (https://epanet22.readthedocs.io/en/latest/back_matter.html#command-line), I tried to create an efficiency curve in the input file but it does not read into the EPANET GUI when I import the .inp file. Is it possible that the section linked above is not complete and there is another step to make sure the curve editor shows this curve as an efficiency curve? I tried referencing the efficiency curve in the [pump] section but that did not work.

Hi. I have a network file for which I'm performing a hydraulic analysis. Some result differ between EPANET GUI version and epanet command line file provided with the package. The results between command line and DLL that I exported from source code, downloaded from the ebsite is consistent. So, it's not clear if the results from EPANET GUI is the correct one or the result from command line version.
I'm using Pressure-Demand Analysis

When a model contains one or more tank with a volume curve AND CanOverflow attribute, it cannot be simulated from GUI:

• simulation is OK with the toolkit.
• opening the model with Epanet is OK.
• when running the analysis you get "Error 206: undefined curve -16s in [TANKS] section:" error.
  See the .inp file attached
  Tank_vol_curve+overflow.inp.txt

[For my network model] Note that “maximum trials are exceeded several times and the system flow balance numbers can't be trusted. It is not a large network (10K pipes) but there are quite few PRV's.”

Are there any plans to add this field to the dynamic results section of the output file?

First, this issue is a Thank-You to all the Beta Testers that helped us review the EPA/OWA Beta Test Release of EPANET 2.2.0 and for providing comments. As a component of EPA’s review process, EPA conducted this peer review of a beta version of EPANET 2.2.0 (dated July 25, 2019) and received several comments from a group of volunteer reviewers (Beta Testers). These Beta Testers provided comments in four areas: (1) needed edits and corrections to the updated, Delphi user interface (UI), (2) needed corrections to the license file (LICENSE), (3) problem with the installer (INSTALLER), and (4) comparability or differences in results with v2.00.12 (RESULTS). These Beta Tester comments will be documented here in subsequent issues. Beta Tester comments will be grouped and entered by area, along with an appropriate label, e.g., “EPA_Beta_Tester_UI”. This issue will be closed when the EPANET 2.2.0 is posted to our website.

Hi everyone

I am not sure if some already faced with this issues.
For simulations of district heating networks with Epanet it would be very useful if the thermal losses of the pipes (change of fluid temperature in a pipe due to surrounding --> constant temperature or temperature pattern) can be considered and if there would be a posibility to set time patterns for the valve setting.
Did someone face with that or has something similar been done yet (the physical knowledge I have but my programming skills are limited)?

Thanks much and regards!

Several Beta Testers reported:
ISSUE #1: Evidence of a model running in 2.00.12 but not in v2.2.
ISSUE #2: Differences observed between v2.2 and v2.00.12.
ISSUE #3: Tank overflow feature did not run with a model selected for testing. Error received, “Error 206: undefined curve -16s in (TANKS) section: …”

Hello
I need to put a PRV next to a water Tank to simulate a water supply network. In the epanet software help and in the error message number 219, it is mentioned that the tank and the PRV must be separated from each other. Please guide me to fix this error.
Thank you

[For my network model] Note that “maximum trials are exceeded several times and the system flow balance numbers can't be trusted. It is not a large network (10K pipes) but there are quite few PRV's.”

[Within the GUI] EPANET header should be 2.2 rather than 2.0.

For near-zero flows, a simple network with a base demand of 0.005 GPM has an actual demand (flow) rounding up to 0.01 GPM. The same for 0.004 GPM, and it rounds down to 0 GPM. Is it possible to increase the significant figure by one more decimal place?

Descriptions for network elements are very useful to keep track of data sources, changes, tasks to be completed, etc.

In EPANET, descriptions are currently saved in the input file by adding a semicolon and writing them after, on the same line of the entity. This means it cannot support multi-line comments (either reading or writing).

In EPASWMM, descriptions are saved in the input file by adding separate comment lines (starting with semicolon) ABOVE the entity line. This allows for multi-line comments.

Is there any interest in adapting EPANET to support multi-line comments by following a similar approach to EPASWMM?

Multiple reviewers note some minor differences between v2.00.12 and the beta release of v2.2.0.

Hello, how to add the'Setting' option of the PRV valve in EPANET2.2? Should it be set to the pre-valve pressure or the post-valve pressure?

Hello，how to understand the "setting" option in the valve?

Graphical User Interface Edits and Corrections:
Setup screen - License term didn’t align properly.
Graph Options - The GUI has default values, but one option. Graph label needs to set a default value.
Copy-paste option - Copy to Meta file captures larger screen than the actual plot window size. Copy to Bitmap is fine.
Windows display scale compatibility - Conflict to windows scale option

Recommendations:
Change to new organization name in the “About EPANET” dialogue box.
Addition of a section “What’s New in 2.2” in the Help file.
Set to default High DPI Scaling Option - With the High DPI scaling override option.
Manual - Addition of PDA simulation example (e.g. a simple NET1 example with PDA simulation option).