# Pump Basics Centrifugal Pumps Centrifugal Pumps Centrifugal Pumps Pump Terminology

## Pump Basics Centrifugal Pumps Centrifugal Pumps Centrifugal Pumps Pump Terminology

Orozco, Samuel, Executive Producer;Founder;Host has reference to this Academic Journal, PHwiki organized this Journal Pump Basics Centrifugal Pumps From the Center of a Circle RADIAL DIRECTION To the Outside of a Circle A machine as long as moving fluid by accelerating the fluid RADIALLY outward. This machine consists of an IMPELLER rotating within a case (diffuser) Liquid directed into the center of the rotating impeller is picked up by the impellers vanes in addition to accelerated to a higher velocity by the rotation of the impeller in addition to discharged by centrifugal as long as ce into the case (diffuser). Centrifugal Pumps

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Centrifugal Pumps A collection chamber in the casing converts much of the Kinetic Energy (energy due to velocity) into Head or Pressure. Pump Terminology Head is a term as long as expressing feet of water column Head can also be converted to pressure “Head” 100 feet 43.3 PSI Reservoir of Fluid

Conversion Factors Between Head in addition to Pressure Head (feet of liquid) =Pressure in PSI x 2.31 / Sp. Gr. Pressure in PSI = Head (in feet) x Sp. Gr. / 2.31 PSI is Pounds per Square Inch Sp. Gr. is Specific Gravity which as long as water is equal to 1 For a fluid more dense than water, Sp. Gr. is greater than 1 For a fluid less dense than water, Sp. Gr. is less than 1 Head Head in addition to pressure are interchangeable terms provided that they are expressed in their correct units. The conversion of all pressure terms into units of equivalent head simplifies most pump calculations. Centrifugal Impellers Thicker the Impeller- More Water Larger the DIAMETER – More Pressure Increase the Speed – More Water in addition to Pressure

Two Impellers in Series Direction of Flow Twice the pressure Same amount of water Multiple Impellers in Series Placing impellers in series increases the amount of head produced The head produced = of impellers x head of one impeller Direction of Flow Direction of Flow Pump Per as long as mance Curve A mapping or graphing of the pump’s ability to produce head in addition to flow

Pump Per as long as mance Curve Step 1, Horizontal Axis The pump’s flow rate is plotted on the horizontal axis ( X axis) Usually expressed in Gallons per Minute Pump Flow Rate Pump Per as long as mance Curve Step 2, Vertical Axis Pump Flow Rate The head the pump produces is plotted on the vertical axis (Y axis) Usually express in Feet of Water Head Pump Per as long as mance Curve Step 3, Mapping the Flow in addition to the Head Pump Flow Rate Most pump per as long as mance curves slope from left to right

Pump Per as long as mance Curve Important Points Shut-off Head is the maximum pressure or head the pump can produce No flow is produced Pump Flow Rate Pump Per as long as mance Curve Important Points Pump Flow Rate Maximum Flow is the largest flow the pump can produce No Head is produced System Per as long as mance Curves System Per as long as mance Curve is a mapping of the head required to produce flow in a given system A system includes all the pipe, fittings in addition to devices the fluid must flow through, in addition to represents the friction loss the fluid experiences

System Per as long as mance Curve Step 1, Horizontal Axis System Flow Rate The System’s flow rate in plotted on the horizontal axis ( X axis) Usually expressed in Gallons per Minute System Per as long as mance Curve Step 2, Vertical Axis Pump Flow Rate The head the system requires is plotted on the vertical axis (Y axis) Usually express in Feet of Water Head System Per as long as mance Curve Step 3, Curve Mapping The friction loss is mapped onto the graph The amount of friction loss varies with flow through the system Pump Flow Rate Friction Loss

Pump Flow Rate The point on the system curve that intersects the pump curve is known as the operating point. Pump Flow Rate Circulator 1 Circulator 2 Circulator 3 PUMP SELECTION Controlling Pump Per as long as mance Changing the amount as long as friction loss or “Throttling the Pump” will change the pump’s per as long as mance

Pump Flow Rate PUMP SELECTION Valve Open Valve Partially Open Valve Barely Open Piping Design Equations Heuristics as long as Pipe Diameter

Energy Loss in Piping Networks Incompressible Fluids Friction Loss Factors as long as Fittings

Friction Loss Factors as long as Valves Fanning Diagram f =16/Re Energy Loss in Valves Function of valve type in addition to valve position The complex flow path through valves can result in high head loss (of course, one of the purposes of a valve is to create head loss when it is not fully open) Ev are the loss in terms of velocity heads

## Orozco, Samuel Executive Producer;Founder;Host

Orozco, Samuel is from United States and they belong to Linea Abierta and they are from  Fresno, United States got related to this Particular Journal. and Orozco, Samuel deal with the subjects like Hispanic Interest; National News

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