systemkurva

A systemkurva, often translated as system curve, is a graphical representation used in engineering and physics to illustrate the relationship between flow rate and pressure in a fluid system. It plots the system's resistance to flow against various flow rates. Typically, the x-axis represents the flow rate (e.g., liters per minute, gallons per hour) and the y-axis represents the pressure (e.g., pascals, psi). The systemkurva is generated by considering all the components within the system that contribute to pressure drop, such as pipes, valves, filters, and bends. As the flow rate increases, the resistance to flow also increases, leading to a higher pressure drop. This results in a curve that generally slopes upwards.

The primary application of a systemkurva is in the selection and sizing of pumps. When a pump is installed in a system, its performance is also represented by a pump curve, which shows the relationship between flow rate and head (pressure) that the pump can deliver. The operating point of the system is found at the intersection of the systemkurva and the pump curve. This intersection point indicates the actual flow rate and pressure that will be achieved when that specific pump is used in that particular system. Understanding the systemkurva is crucial for ensuring efficient operation and preventing issues like cavitation or insufficient flow. Modifying the system, such as changing pipe diameters or adding or removing components, will alter the systemkurva and thus change the operating point.