Magnetic refrigerator

Details Magnetic refrigerator Magnetic refrigerator

1983-05-23

1985-04-09

Capossela, Ronald C.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

62 3, 16510421, F25B 900

Patent

active

045093342

ABSTRACT:
A working material used in a magnetic refrigerator radiates heat when it is magnetized and absorbs heat when it is demagnetized. The working material is cylindrical and extends vertically. A heat pipe has a cylindrical internal space directly surrounding the peripheral surface of the working material and containing helium gas as a heat medium. The peripheral surface of the working material in contact with the internal space functions as a condensing surface of the heat pipe. A superconductive coil surrounds the working material and intermittently applies a magnetic field thereto. A refrigerator unit supplies a cooling space with helium gas at 20.degree. K. or below. The helium gas from the refrigerator unit removes heat produced from the working material when it is adiabatically magnetized by the coil. When the working material is adiabatically demagnetized, it rapidly absorbs heat to cool the helium gas in the internal space of the heat pipe. The helium gas condenses on the peripheral surface of the working material, and falls in drops into the internal space to be stored at the lower end portion thereof. Thus, heat is transferred in one direction or upward in the heat pipe.

REFERENCES:
patent: 4033734 (1977-05-01), Steyert, Jr. et al.
patent: 4107935 (1978-08-01), Steyert, Jr.
patent: 4332135 (1982-06-01), Barclay et al.
Cryogenics, Oct. 1981, pp. 579-584, C. Delpuech et al., "Double Acting Reciprocating Magnetic Refrigerator: First Experiments".

Affiliated with

Also associated with

Rating

Magnetic refrigerator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic refrigerator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic refrigerator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1162776