What is system curve and pump curve?

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What is system curve and pump curve?

A second curve, called the system curve, is used in conjunction with the pump curve and can be overlaid on the same graph. The system curve represents the system head in your specific application at various flow rates and is calculated by determining the system’s static head and friction loss.

What is system characteristics curve of a pump?

A system curve, as shown in Figure 2, is a graphical representation of the pump head that is required to move fluid through a piping system at various flow rates. The system curve helps quantify the resistance in a system due to friction and elevation change over the range of flows.

What is system head curve?

►System Head Curves. System curves are performance curves of piping systems. They are graphical representations of the energy required to move a given flow rate through a piping system and are used to identify some of the necessary characteristics of the system’s pump.

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How do you find the system curve of a pump?

Starts here4:36How to Draw a Centrifugal Pump System Curve in Under Four SecondsYouTubeStart of suggested clipEnd of suggested clip56 second suggested clipIt’s a hydronic system and if you recall in a closed loop system. You do not have to account forMoreIt’s a hydronic system and if you recall in a closed loop system. You do not have to account for that static head that’s present. So we can begin by plotting a point at zero flow at zero feet of head.

How do you read a system curve?

Starts here9:56How to Read a System Curve: Simple Explanation – YouTubeYouTube

What is the system characteristic curve?

The system characteristic curve (see Characteristic curve) represents the relationship between the system head (Hsys) and the flow rate (Q). It is often parabola-shaped and does not generally pass through the origin of the H/Q coordinate system. The curve becomes progressively steeper as throttling increases.

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What is pump curve?

A pump performance curve indicates how a pump will perform in regards to pressure head and flow. A curve is defined for a specific operating speed (rpm) and a specific inlet/outlet diameter. The curve also shows the shut off head or the head that the pump would generate if operating against a closed valve.

How do you create a system curve?

How to Plot a System Curve

  1. Step 1 – Set the System Syzer Scale 5 for 2200 GPM at 100 feet of head.
  2. Step 2 – Without changing the position (or settings) of the System Syzer, read off and record the head at various other flows.
  3. Step 3 – Plot these values to develop the system curve.

How do you curve a pump?

Starts here3:04How to Generate and Read a Centrifugal Pump Curve – YouTubeYouTube

What is ETA in pump curve?

The upper efficiency curve (Eta2) is the pump efficiency curve (eta pump). The lower efficiency curve (Eta1) is the total efficiency curve (eta pump + motor), taking all electrical, mechanical, and hydraulic losses into consideration.

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