Pump
This article is about the mechanical device. For the shoe see Pump . For the Aerosmith album see Pump . For the see .
A pump is a device used to move gases,
liquids, or slurries. A pump moves liquids or gases from lower pressure to higher pressure, and overcomes this difference in pressure by adding energy to the system . A gas pump is generally called a
compressor.
The earliest pump was described by
Archimedes in the 3rd century BC and is known as the
Archimedes screw pump.
Pumps work by using mechanical forces to push the material, either by physically lifting, or by the force of compression.
Encyclopedia
This article is about the mechanical device. For the shoe see Pump . For the Aerosmith album see Pump . For the see .A
pump is a device used to move gases,
liquids, or slurries. A pump moves liquids or gases from lower pressure to higher pressure, and overcomes this difference in pressure by adding energy to the system . A gas pump is generally called a
compressor.
The earliest pump was described by
Archimedes in the 3rd century BC and is known as the
Archimedes screw pump.
Pumps work by using mechanical forces to push the material, either by physically lifting, or by the force of compression.
Types
Pumps fall into three categories: positive displacement, kinetic , and jet . Their names describe the method for moving water.
A positive displacement pump causes water to move by trapping a fixed volume of water and then forcing that trapped volume into the receiving pipe. Positive displacement pumps can be further classified as either rotary-type or reciprocating-type .
A centrifugal pump causes water to move by transfering the kinetic energy from a motor into water pressure .
A eductor-jet pump is special type of pump without moving parts that uses the kinetic energy of a fluid to increase the pressure of a second fluid.
Application
Pumps are used throughout society for a variety of purposes. Early applications includes the use of the windmill or
watermill to pump water. Today, the pump is used for irrigation, water supply, air conditioning , chemical movement, sewage movement, flood control, marine services, etc.
Because of the wide variety of applications, pumps have a plethora of shapes and sizes: from very large to very small, from handling gas to handling liquid, from high pressure to low pressure, and from high volume to low volume.
Power source
Pumps may be powered by an
internal combustion engine,
electric motor, manually , or by
wind power . Solar power has been used to power an electric motor, for remote locations.
See also
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External links
