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

Absolute, Dynamic and Kinematic Viscosity

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

Alternating Pumps

Secure the system and achieve equal wear by alternate pumps in parallel

Best Efficiency Point - BEP

Maximum designed pump efficiency 

Boiling Fluids - Recommended Suction Flow Velocities

Recommended pump suction flow velocities for boiling fluids

Boiling Liquids - Pumping Flow Velocities

Recommended flow velocity required on the delivery side of a pump in a system with boiling liquids

Cavitation - an Introduction

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

Centrifugal Pump Speed-Torque Curve

Centrifugal pumps characteristics - speed torque curve

Centrifugal Pumps

An introduction to Centrifugal Pumps

Centrifugal Pumps - Minimum Flow

Centrifugal pumps and minimum continuous flow to prevent flashing

Centrifugal Pumps and Standards

Centrifugal pumps design and dimensions standards

Centrifugal Pumps and Viscosity

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

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/cm2) and vice versa

Equation of Mechanical Energy and Bernoulli

The mechanical energy equations in terms of Energy per Unit Mass, Energy per Unit Volume and Energy per Unit Weight involving head

Flow Units Converter

Convert between volume flow units - gpm, liter/sec, cfm, m3/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 Oils - Pumping Flow Velocities

Recommended flow velocity required for light oil systems on the delivery side of the pump

Light Oils - Suction Flow Velocities

Recommended pump suction flow velocity for light oils

Modulating Discharge Flow from Centrifugal Pumps

Adapting pump capacity to 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 a Pump or a Fan

The power gained by fluid from an operating pump or fan

Pressure Units - Online Converter

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

Pressure to Head Unit Converter

Convert between pressure and head units - lb/in2, atm, inches mercury, bars, Pa and more ..

Pump Affinity Laws

Turbo machines affinity laws are used to calculate volume capacity, head or power consumption in centrifugal pumps with changing speed - rpm - 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

Pumping Water - Horsepower Requirements

Horsepower requirements pumping water

Pumps - Power Calculator

Calculate pump hydraulic and shaft power

Pumps - Specific Suction Speed

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

Pumps in Parallel or Serial Connection

For pumps in serial - add head, for pumps 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 commonly used units

Shut-off Head

Centrifugal pumps and maximum - or shut-off - head

Specific Speed - Pumps

Specific speed may be determined independent of the pump size

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

Suction Head affected by Altitude

Pump suction head as affected by altitude

System Curve and Pump Performance Curve

To select a proper pump for a particular application it is necessary to utilize the system curve and the pump performance curve

Vapor Pressure

Vapor and saturation pressure for some common liquids

Viscosity Converting Chart

Convert between viscosity units like Centiposes, milliPascal, CentiStokes and SSU

Viscous Fluids - Recommended Suction Flow Velocities

Recommended pump suction flow velocities for viscous fluids

Viscous Liquids - Recommended Delivery Flow Velocities

Flow velocities on delivery sides of pumps in viscous systems

Volume Flow and Temperature Rise in Pumps

Calculate temperature rise in pumps

Water - Suction Flow Velocities

Recommended water flow velocities on suction sides of pumps

Water Delivery Flow Velocities

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

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

Water Pumping Costs

Costs pumping water

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