# Pumps

## Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more

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### Absolute, Dynamic and Kinematic Viscosity

Dynamic, absolute and kinematic viscosities - convert between *CentiStokes (cSt), centipoises (cP), Saybolt Universal Seconds (SSU) and degree Engler*

### Alternating Pumps

Securing a system and achieve equal wear by alternating pumps in parallel

### Best Efficiency Point - BEP

Maximum designed pump efficiency

### Boiling Fluids - Max Suction Flow Velocity

Recommended max suction flow velocity when pumping boiling fluids

### Boiling Liquids - Max Pumping Flow Velocity

Recommended max flow velocity on the delivery (pressure) side when pumping boiling liquids

### Cavitation - an Introduction

Cavitation occurs in fluid flow systems where the local static pressure is below vapor pressure

### Centrifugal Pump Standards

Centrifugal pump design and dimension standards

### Centrifugal Pumps

An introduction to Centrifugal Pumps

### Centrifugal Pumps - Minimum Flow

Minimum continuous flow to prevent flashing in centrifugal pumps

### Centrifugal Pumps - Speed Torque Curve

Centrifugal pumps and the characteristic speed torque curve

### Centrifugal Pumps and Influence from Viscosity

When a liquid flow through a pump, hydrodynamic losses depends on fluid viscosity

### Centrifugal Pumps and Shut-Off Head

Centrifugal pumps and maximum (shut-off) head

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### Classifications of Pumps

Selecting between Centrifugal Pumps and Positive Displacement Pumps

### Condensate Pumping

High temperatures and danger of impeller cavitation is the major challenge of condensate pumping

### Converting Pump Head to Pressure and Vice Versa

Converting head *(ft or m)* to pressure *(psi or bar, kg/cm ^{2})* and vice versa

### Flow Units Converter

Convert between volume flow units - *gpm, liter/sec, cfm, m ^{3}/h* - an online flow unit calculator

### Head Rise and the Energy Equation - for Pump or Fan

The energy equation can be used to calculate head rise in pumps or fans

### Light Oil Pumping Flow Velocity

Max light oil flow velocity on pump delivery side

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### Light Oil Suction Flow Velocity

Recommended suction flow velocity when pumping light oils

### Mechanical Energy and Bernoulli Equation

The mechanical energy equation related to energy per unit mass, energy per unit volume and energy per unit weight involving head

### Modulate Centrifugal Pump Capacity

Adapting pump capacity to variable process demand

### NEMA Frame Assignments

NEMA Frame Assignments

### NPSH - Net Positive Suction Head

An introduction to pumps Net Positive Suction Head - NPSH

### Positive Displacement Pumps

Introduction tutorial to positive displacement pumps basic operating principles

### Power Gained by Fluid from Pump or Fan

The power gained by fluid from an operating pump or fan

### Pressure to Head - Unit Converter

Convert between pressure and head units - like *lb/in ^{2}, atm, inches mercury, bars, Pa and more ..*

### Pressure Units - Online Converter

Convert between pressure units like *Pa, bar, atmosphere, pound square feet, psi and more*

### Pump Affinity Laws

Turbo machines affinity laws can be used to calculate volume capacity, head or power consumption in centrifugal pumps with changing speed or wheel diameters

### Pump and Fan Efficiency

Overall pump and fan efficiency is the ratio power actually gained by the fluid to the shaft power supplied

### Pump Suction Head and Altitude

The suction heads of pumps are affected by altitude

### Pumping Water - Costs

The cost of pumping water

### Pumping Water - Required Horsepower

Horsepower required to pump water

### Pumps - Power Calculator

Calculate pump hydraulic and shaft power

### Pumps - Specific Suction Speed

Specific Suction Speed can be used to determine what general pump design to use for maximum efficiency

### Pumps in Parallel or Serial

For pumps connected in serial - add head, for pumps connected in parallel - add flowrates

### Pumps, Compressors, Blowers and Fans

Comparing pumps, compressors, blowers and fans

### Pumps, Fans and Turbines - Horsepower

British Horse Power in pumps, fans and turbines - and how to convert to other units

### Specific Speed Pumps

Characterize the type of impeller in pump in a unique and coherent manner

### Specific Work of Turbo Machines - Pumps, Compressors and Fans

Specific work from pumps, fans, compressors and turbines

### Stable and Unstable Centrifugal Pumps

Characteristics of stable and unstable centrifugal pumps

### Static Pressure and Pressure Head in Fluids

Static pressure and pressure head

### System Curve and Pump Performance Curve

Utilize the system curve and the pump performance curve to select the proper pump for a particular application

### Vapor Pressure common Liquids

Vapor and saturation pressure for some common liquids

### Viscosity Converting Chart

Convert between the viscosity units *Centiposes, milliPascal, CentiStokes and SSU*

### Viscous Fluids - Recommended Suction Flow Velocity

Recommended pump suction flow velocity for viscous fluids

### Viscous Liquids - Recommended Delivery Flow Velocity

Flow velocities on delivery sides of pumps in viscous systems

### Volume Flow and Temperature Rise in Pump

Calculate temperature rise in pumps

### Water - Delivery Flow Velocity

Required flow velocities in water transport systems - on the delivery side of the pump

### Water - Suction Flow Velocity

Recommended water flow velocities on suction sides of pumps

### Water Pump Calculator

Calculate Pressure Head, Total Dynamic Head, Bowl Horsepower, Total Trust acting on Driver Thrust Bearing, Field Head, Power Loss due to Shafting, Power Loss in Thrust Bearings, Motor Load, Field Efficiency, Input Horsepower (Power Supplied to Driver) and Shaft Elongation