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### fluid dynamics - Relationship of Pump Power to Flow Rate ...

I read two different things about the relationship between power (P) of a pump and flow rate (Q). The most common thing that I found was simply that Q is directly proportional to P ( power-of-pump ). But in Wikipedia: Affinity Laws , it states that Q is proportional to shaft speed (S), and P is proportional to the cube of shaft speed (S^3).

Learn More### Pump Laws Review and Equations - Engineers Edge

Determine the pump flow rate, head, and power requirements if the pump speed is increased to 3600 rpm. It is possible to develop the characteristic curve for the new speed of a pump based on the curve for its original speed.

Learn More### Affinity laws - Wikipedia

The affinity laws (Also known as the "Fan Laws" or "Pump Laws") for pumps/fans are used in hydraulics, hydronics and/or HVAC to express the relationship between variables involved in pump or fan performance (such as head, volumetric flow rate, shaft speed) and power..

Learn More### relationship between the pump speed and the flowrate ...

2003/02/05 · relationship between the pump speed and the flowrate/flowability raysheild (Mechanical) (OP) 31 Jan 03 07:22 dear friends, There is this problem we were facinng when i was doing my project for the completion of my national i and ...

Learn More### Pump Flow - GlobalSpec

2021/01/26 · Pump Parameters Pump operation and performance can best be described by a few fundamental parameters; flow rate, pressure, head, power, and efficiency. Volume flow rate (Q), also referred to as capacity, is the volume of liquid that travels through the pump in a given time (measured in gallons per minute or gpm).

Learn More### Pump Power Calculation Formula | Specific speed of a ...

2020/01/19 · Efficiency and Input Power of the Pump The work performed by the pump is equal to the weight of liquid pumped in Unit time multiplied by total Head in meters. However the pump capacity in M 3 /hr and liquid specific gravity are used rather than weight of liquid pumped for work done by the pump. ...

Learn More### Pump Affinity Laws - Engineering ToolBox

Example - Pump Affinity Laws - Changing Pump Speed The pump speed is changed when the impeller size is constant. The initial flow is 100 gpm, the initial head is 100 ft, the initial power is 5 bhp, the initial speed is 1750 rpm and the final speed 3500 rpm.

Learn More### For a centrifugal pump, what is the relationship between ...

The pressure generated by a centrifugal pump is proportional to the square of the speed, the flow rate is directly proportional to the speed, and the power needed to drive the pump is proportional to the cube of the speed. If you double ...

Learn More### Flow Rate and Its Relation to Velocity | Physics

The relationship tells us that flow rate is directly proportional to both the magnitude of the average velocity (hereafter referred to as the speed) and the size of a river, pipe, or other conduit. The larger the conduit, the greater its cross

Learn More### Flow rate [m h] Total head [m] - Fristam

The power consumption is the total energy transferred by the pump to the discharge flow. Flow rate [m≈/h] Total head [m] Power consumption Pump technology terms Looking at two parallel plates with the surface A and the ...

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