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Electrophoretic Heat Pump

IP.com Disclosure Number: IPCOM000091572D
Original Publication Date: 1968-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Greenblott, BJ: AUTHOR

Abstract

The movement of solid, suspended particles 12 through liquid 14 caused by a nonuniform electric field applied across such liquid can be utilized to transfer heat and, thus, can be utilized as a cooling system. The heat is removed from an undesirable location by transferring it to particles 12 which come in contact with the location. Particles 12 are caused to move away from the heat source so that the heat can be given up to liquid 14 or can be carried to a remote heat sink. Particles 12 have a dielectric constant much greater than the liquid 14.

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Electrophoretic Heat Pump

The movement of solid, suspended particles 12 through liquid 14 caused by a nonuniform electric field applied across such liquid can be utilized to transfer heat and, thus, can be utilized as a cooling system. The heat is removed from an undesirable location by transferring it to particles 12 which come in contact with the location. Particles 12 are caused to move away from the heat source so that the heat can be given up to liquid 14 or can be carried to a remote heat sink. Particles 12 have a dielectric constant much greater than the liquid 14.

Energizing the field causes particles 12 to migrate towards center electrode 18. The latter can be a hollow tube with a fluid to be cooled flowing through it or a heat conducting solid wire that requires cooling. Outer cylindrical electrode 16 is concentric with electrode 18. Both are oriented vertically to take advantage of the gravitational force acting on particles 12. The movement of particles 12 in liquid 14 is due to the fact that neutral particles acquire a negative charge on the positive electrode facing side of particle 14 and a positive charge on the side facing the negative electrode. With a nonuniform field, that is stronger on one side than the other, a particle 14 is attracted toward the strongest side.

Electrode 18 is narrow, thus causing the lines of electric force to converge as they approach it. Therefore, the field is greater around electrode 18. Thus, particles 12 are attracted towards electrode 18. The larger the particles 12, the greater the field difference between its polarized sides, thus generating a greater force.

Several factors enter into the o...