# Centrifugal Pump Specific Speed and Pump Profiles

Centrifugal pumps can vary in type from radial-vane to axial flow as shown in Figure 1. Specific speed, which is the correlating parameter for the…

# DYNAMIC COMPRESSORS – SURGING

When a compressor is connected to a large system, which needs a large amount of gas for the process, the gas intake will vary with…

# DYNAMIC COMPRESSORS – RPM AND BREAK HORSEPOWER

The ratio of compression, defined as the ratio of the discharge absolute pressure to the absolute suction pressure, is an indicator of the amount of…

# DYNAMIC COMPRESSORS – RPM AND HORSEPOWER

RPM AND HORSEPOWER For all rotating machines, RPM is an important parameter. The impeller of a centrifugal compressor has to rotate (revolve) to move the…

# DYNAMIC COMPRESSORS – AXIAL COMPRESSORS

Motion along the axis of a shaft is called axial motion. This takes place in a straight line. A compressor in which the gas moves…

For compressing a gas to higher pressures, certain amount of work has to be done on the gas. The work done on a gas may…

# COMPRESSOR CAPACITY

The capacity of a compressor is the volume of gas that it handles in a given period of time. For example, CFM indicates the volume…

# DYNAMIC COMPRESSORS – RATIO OF COMPRESSION

While the difference between suction and discharge pressures denotes the work done on a gas system, the ratio of absolute discharge pressure to absolute suction…

# DYNAMIC COMPRESSORS – CENTRIFUGAL COMPRESSORS

If a body is set in motion, it tends to continue in motion unless some force acts in the opposite direction to stop it. If…

# DYNAMIC COMPRESSORS

There are two forms of energy in any system. One is called potential energy and the other is called kinetic energy. For example, compressed gas…