friction head of centrifugal pump|centrifugal pump suction head

Self-Priming centrifugal pumps were invented in 1935. One of the first companies to market a self-priming centrifugal pump was American Marsh in 1938. [citation needed] Centrifugal pumps that are not designed with an internal or external self-priming stage can only start to pump the fluid after the pump has initially been primed with the fluid.

When it comes to understanding the performance of a centrifugal pump, one crucial aspect to consider is the friction head. Friction head plays a significant role in determining the efficiency and effectiveness of a centrifugal pump in various applications. In this article, we will delve into the concept of friction head, its components, and its impact on the overall operation of centrifugal pumps.

FRICTION HEAD (hf) is the head required to overcome the resistance to flow in the pipe and fittings. It is dependent upon the size and type of pipe flow rate, and nature of the liquid. Frictional tables are included in section 17C.

Static Discharge Head (Hd)

Static Discharge Head (Hd) is a fundamental parameter that defines the vertical distance in feet or meters between the pump centerline and the point of free discharge or the surface of the liquid in the discharge tank. It represents the static pressure head that the pump needs to overcome to push the liquid to its intended destination. Static Discharge Head is essential for calculating the total head requirement of the centrifugal pump and ensuring proper performance.

Friction Head (Hf)

Friction Head (Hf) is another critical component that contributes to the total head of a centrifugal pump. It represents the energy loss due to frictional resistance within the pump system, including the piping, fittings, valves, and other components. Friction head is influenced by factors such as the flow rate, pipe diameter, pipe roughness, and fluid properties. Understanding and minimizing friction head are essential for optimizing the efficiency and reducing energy consumption of centrifugal pumps.

Centrifugal Pump Suction Head

The suction head of a centrifugal pump refers to the vertical distance between the pump centerline and the surface of the liquid in the suction tank. It includes the static suction head and the velocity head, which accounts for the kinetic energy of the liquid entering the pump. The suction head is crucial for ensuring proper priming and preventing cavitation in the pump.

Centrifugal Pump Pressure Head

Pressure head in a centrifugal pump is the energy imparted to the liquid by the pump impeller, resulting in an increase in pressure. It is essential for overcoming the resistance in the discharge system and delivering the liquid to the desired location at the required pressure. Pressure head is a key factor in determining the performance and efficiency of a centrifugal pump.

Centrifugal Pump Manometric Head

Manometric head in a centrifugal pump refers to the total head developed by the pump, including both the static head and the velocity head. It represents the total energy imparted to the liquid by the pump and is crucial for calculating the pump's efficiency and performance characteristics. Manometric head is a comprehensive measure of the pump's ability to overcome resistance and deliver the liquid effectively.

Centrifugal Pump Head Diagram

A centrifugal pump head diagram is a graphical representation of the various components of the total head in a centrifugal pump system. It typically includes the static head, velocity head, friction head, and pressure head, illustrating how each component contributes to the overall head requirement of the pump. A head diagram is useful for analyzing the performance of the pump and identifying areas for improvement in the system.

Centrifugal Pump Head Definition

The head of a centrifugal pump is defined as the energy per unit weight of the liquid that the pump imparts to the liquid. It is typically measured in units of length, such as feet or meters, and represents the height to which the pump can raise the liquid against gravity. The head is a critical parameter for determining the pump's performance, efficiency, and capacity to deliver the liquid to its intended destination.

Centrifugal Pump Friction Loss

Friction loss in a centrifugal pump refers to the energy loss due to frictional resistance in the pump system. It includes losses associated with the flow of the liquid through the piping, fittings, valves, and other components. Friction loss is a significant factor that affects the efficiency and performance of the pump, as it reduces the available head and increases the energy consumption of the pump.

Static Head Centrifugal Pump

Static head in a centrifugal pump refers to the vertical distance between the pump centerline and the liquid level in the system, including both the suction and discharge sides. It represents the static pressure head that the pump needs to overcome to lift the liquid and deliver it to its destination. Static head is a critical parameter for calculating the total head requirement of the pump and ensuring proper operation.

Centrifugal Pump Hm Head

Your pump will have to have at least 30 ft of total head plus the friction loss for you to get the require flow at the discharge point. Also, head is independent of the type of liquid pumped as long as the viscosity is low and similar to water.

このような遠心力を用いたポンプを「遠心ポンプ」（Centrifugal pump）と言い、羽根の外周に渦がた室（casing）のみがあり案内羽のない形式の遠心ポンプはボリュートポンプ（Volute pump、Voluteは螺旋の意。）とも呼ばれる。

friction head of centrifugal pump|centrifugal pump suction head