Misplaced Pages

Articles about
Electromagnetism
Electricity Magnetism Optics History Computational Textbooks Phenomena
Electrostatics Charge density Conductor Coulomb law Electret Electric charge Electric dipole Electric field Electric flux Electric potential Electrostatic discharge Electrostatic induction Gauss law Insulator Permittivity Polarization Potential energy Static electricity Triboelectricity
Magnetostatics Ampère law Biot–Savart law Gauss magnetic law Magnetic dipole Magnetic field Magnetic flux Magnetic scalar potential Magnetic vector potential Magnetization Permeability Right-hand rule
Electrodynamics Bremsstrahlung Cyclotron radiation Displacement current Eddy current Electromagnetic field Electromagnetic induction Electromagnetic pulse Electromagnetic radiation Faraday law Jefimenko equations Larmor formula Lenz law Liénard–Wiechert potential London equations Lorentz force Maxwell equations Maxwell tensor Poynting vector Synchrotron radiation
Electrical network Alternating current Capacitance Current density Direct current Electric current Electric power Electrolysis Electromotive force Impedance Inductance Joule heating Kirchhoff laws Network analysis Ohm law Parallel circuit Resistance Resonant cavities Series circuit Voltage Watt Waveguides
Magnetic circuit AC motor DC motor Electric machine Electric motor Gyrator–capacitor Induction motor Linear motor Magnetomotive force Permeance Reluctance (complex) Reluctance (real) Rotor Stator Transformer
Covariant formulation Electromagnetic tensor Electromagnetism and special relativity Four-current Four-potential Mathematical descriptions Maxwell equations in curved spacetime Relativistic electromagnetism Stress–energy tensor
Scientists Ampère Biot Coulomb Davy Einstein Faraday Fizeau Gauss Heaviside Helmholtz Henry Hertz Hopkinson Jefimenko Joule Kelvin Kirchhoff Larmor Lenz Liénard Lorentz Maxwell Neumann Ohm Ørsted Poisson Poynting Ritchie Savart Singer Steinmetz Tesla Thomson Volta Weber Wiechert
v t e

An electromagnetic pump is a pump that moves liquid metal, molten salt, brine, or other electrically conductive liquid using electromagnetism.

A magnetic field is set at right angles to the direction the liquid moves in, and a current is passed through it. This causes an electromagnetic force that moves the liquid.

Applications include pumping molten solder in many wave soldering machines, pumping liquid-metal coolant, and magnetohydrodynamic drive.

Working principle

A magnetic field (b_rc) always exists around the current (I)-carrying conductor. When this current-carrying conductor is subjected to an external magnetic field (B_ap), the conductor experiences a force perpendicular to the direction of I and B_ap. This is because the magnetic field produced by the conductor and the applied magnetic field attempt to align with each other. A similar effect can be seen between two ordinary magnets.

This principle is used in an electromagnetic pump. The current is fed through a conducting liquid. Two permanent magnets are arranged to produce a magnetic field B_ap as shown in the figure. The supplied current has a current density (J) and the magnetic field associated with this current can be called "Reaction magnetic Field (b_rc)". The two magnetic fields B_ap and b_rc attempt to align with each other. This causes mechanical motion of the fluid.

Einstein–Szilard electromagnetic pump

Designed for the Einstein–Szilard electromagnetic refrigerator (not the pumpless Einstein refrigerator), it uses electromagnetic induction to move conductive liquid metal without electrodes, to compress a working gas, pentane. It is a liquid linear induction motor.

See also

• Magnetic flow meter
• Magnetohydrodynamic drive

References

1. Dannen, Gene (January 1997). "The Einstein–Szilard Refrigerators" (PDF). Scientific American. 276 (1): 90–95. Bibcode:1997SciAm.276a..90D. doi:10.1038/scientificamerican0197-90.

Bibliography

• Baker, Richard S., Tessier, Manuel J. Handbook of Electromagnetic pump technology. 1987. osti 5041159. oclc 246618050.

External links

• The Electromagnetic Pump, Lecture Demonstration Manual, University of Melbourne (archived)
• Analysis and Design of Electromagnetic Pump, 2010
• Electromagnetic pumps, Carli Precimeter GmbH (archived)

This electromagnetism-related article is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Pumps
• Electromagnetism stubs