h2x User GuideUser Guide
๐Ÿ–‹๏ธ System Design

Flow Source

The Flow Source is the starting point for systems such as gas, water, fire, and drainage. 

It represents the connection to a main supply or an existing point in the network where system connects, and the calculations will begin.

The Flow Source is crucial for defining the initial conditions of the systemโ€™s calculations, such as the Pressure and Height.

How It Works

Step-by-step
  1. Placement:

    Click on the Flow Source symbol in the toolbar and left-click to place it at the desired location.

    You can move it by left-clicking and dragging.

  2. Define Properties:

    Name: Assign a meaningful name in the properties for easy identification.

    Flow System: Specify the type of system (e.g., water, fire, gas) if you donโ€™t want the default.

  3. Define Key Properties:

    For Water/Fire systems:

    Residual Pressure: Enter the lowest expected pressure at the connection point. This value is used for downstream, peak flow calculations.

    Static Pressure: Input the maximum expected pressure at the connection point. This value is used for static demand calculations.

    Height: Enter the height of the flow source relative to the systemโ€™s reference level. Ensure this value correlates accurately with your level settings.

    For Gas systems:

    Pressure: Enter the lowest expected pressure at the connection point. This value is used for calculations to determine sizing required to provide enough pressure to your appliances.

    Height: Enter the height of the flow source relative to the systemโ€™s reference level. Ensure this value correlates accurately with your level settings.

  4. Connections:

    Pipes become solid with visible flow arrows when connected to the Flow Source properly. Semi-transparent pipes indicate they are not connected.

Troubleshooting

Verify Properties

Check the Residual Pressure and Static Pressure values to ensure they align with the expected supply conditions.

Confirm the Height value is correctly set relative to your systemโ€™s floor Level.

For example, a Level at 50 feet and a Flow Source at -1 feet means there is a 51-foot difference. You likely should enter 49 feet as the Flow Source height to align correctly.

Check Connections

Properly connected pipes appear solid with visible flow arrows. Semi-transparent pipes indicate a disconnection.

If you see any semi-transparent pipes, trace them back to a solid Pipe or the Flow Source. Adjust connections until all pipes appear solid with flow arrows.