Required pressure at the primary pump station

Nibal,
If we strip this down to a simplified explanation of things, my understanding is that you need to size the overall mainline back to the main POC, right?

To go a bit deeper, I see things fall into 2 buckets:

1- You would like to determine what the demands will be once things reach the main POC (Primary Pump Station),and/or
2- You would like to know what you have available at each of the secondary pump stations/water tank areas that will ultimately feed the given landscape areas. (I am unsure what a provision point equates to equipment-wise)

Is my understanding of this correct?

If so, I would suggest the following:

1- From the main POC, draw your mainline out to each area that will hold a given secondary Pump/Water Tank.
2- At each of these areas, I would place a System Monitor (use the symbol that includes an ID attribute so you can number each one)
3- You can then size the main POC (assuming you have setup the Source Data to reflect total flow and pressure you have available at that point)
4- The System Monitors will then fill out with your Max available flow, and a revised available pressure based on pushing the available flow to each area. The mainline will then also be sized accordingly to handle these numbers.

These numbers can then be used as a reference as what NOT to exceed as you design the system back to the secondary point of connection. In turn, you know that the Primary POC is sized to handle the values shown.

I would think this is all you would need to do since you are essentially sizing the system to accommodate a certain amount of flow out to those given areas.

If you would like to size the mainline back to the primary POC based on demands of the system that you set, this is where you could incorporate the CAP. Your workflow would look something like this:

1- From the main POC, draw your mainline out to each area that will hold a given secondary Pump/Water Tank.
2- At each of these areas, place a Cap (use the symbol that includes an ID attribute so you can number each one)
3- Fill out the given demands at each Cap
4- You can then size the main POC (assuming you have setup the Source Data to reflect total flow and pressure you have available at that point)
5- The mainline will be sized accordingly to handle these numbers.

In either workflow, the Critical Analysis will show your results and what area is considered critical station/area (Cap or System Monitor).

If I am misunderstanding anything you are welcome to send in your files in a Support Ticket and we can continue the conversation there.

Power Tip: Put A Cap On It
Submitting a Support Ticket

Jake,

Thank you..


actually, I need to do the cap option one.


I have TSE(TREATED WATER) WATER LINE with one primary pump station, and 6 secondary pump station plus provision points(irrigation points with low flow demand that doesn't need a pump)..


what I need?
I need to know the required pressure at the primary pump station to accommodate the needed pressure at the critical station at the main line.

1- I did locate the CAPS at the 6 secondary pump stations and all the provision points with the given demand on each point, and left the pressure with 0 value.
2- I sized the mainline after setting the water source data,

but I am still getting 0 values for the pressures..

What do I need to do to generate the required pressure at each secondary pump station point and each provision point?

Thanks
Nibal

Nibal,
It sounds like you are not filling out the Cap 100%. The Cap needs to have a flow AND pressure value assigned to each one. You are able to leave the main POC (primary pump station) without a pressure if you would like, so the system can pull in all Cap demands and list the critical location for what would be needed pressure and flow-wise when sizing the mainline.

Doing this will give you what you need at the main POC.

Regards,

Jake,
I only have available floe rates in each Cap, and the sizes of the mainline.
I don't have the pressure in each CAP, I need to generate it to see what is the required pressure at each one.
What I did,
I proposed a pressure value at the primary pump station and the possible critical station, and sized the mainline depending on the available flow rates thinking that the pressures will be generated too.


Nibal

Nibal,
You can take a guess at the pressure demands that you would like at each of the Caps. Doing this would size the system to ensure you have the right size pipes based on the conditions set in the Caps. You would then just need to make sure not to design the systems past what you are setting in these Caps.

If you are trying to generate the pressures at these Cap locations, then this is where the use of the System Monitor comes in instead, as I described previously. There will still be a level of guessing until you get the accurate pressure readings for the primary POC, but the proposed pressure value you entered into that main POC will get pushed out to the secondary pump stations and show what you will have available to use at those points. The pipes will then be sized to accommodate this scenario.