Hi guys,
I am trying to Fix an issue in my water gem model for industrial area project. The model is running seamlessly perfect, But I am not able to achieve the required pressure (2.5 bar) at node point PW-12. This node connecting to the underground water tank from there water will be pumped to the industrial building. I tried to fix the issue with many trials but can't to solve this. I have attached my model kindly review and let me know the solution.
5.8_Industrial_WaterStudy_AppA_WaterGEM.zip
Hello Ragavendra,
You can use a PRV to reduce pressure at node PW-1. Here is a relevant article that can help you on that;
How does the Pressure Reducing Valve (PRV) work in WaterGEMS and WaterCAD?
I was able to achieve a pressure of 2.5 bars at junction PW-1 by using the following setup;
In the above setup you can see I have first created a node J-110 at an elevation same as PW-1 (i.e. 16.5 m), then I have connected it to a PRV (also at elevation 16.5 m and diameter 250 mm same as pipe) which connects to your existing node PW-1. Prior to creating this modification the length of pipe between reservoir R-2 to PW-1 was 13 m. I manually put my "User Defined" length as 13 m for the pipe connecting PRV-1 to PW-1. For the rest of the two pipes I used very small user defined lengths, (order of 0.001 m). This way it is negligible and the total length from reservoir to PW-1 is 13 m only.
I have annotated junctions for pressure, as you can see the pressure is reduced from 2.7 bars to 2.5 bars.
Hope this helps.
Regards,
Yashodhan Joshi
Hi,
Sorry, it's my mistake Actually I mean it getting less pressure (1.49 bar) at PW-12. So I need more head to satisfy the requirements
Ragavendra,
why do you need to archive 2.5 bars at PW-12? your system downstream has tanks and pump.
your HGL at the Reservoir is 44m and the elevation at PW-12 is 16m, the static deference is 28m = 2.8 bars; with that configuration of FCV, pipe size and flow you cannot get 2.5 bars, try to increase the HGL at the reservoir and try change pipe size.