Magnetic refrigeration apparatus with belt of ferro or paramagnetic material

Patent · Wed Dec 31 23:00:00 EST 1986

OSTI ID:866411

Barclay, John A ^[1]; Stewart, Walter F ^[2]; Henke, Michael D ^[3]; Kalash, Kenneth E ^[3]

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1. Madison, WI
2. Marshall, WI
3. Los Alamos, NM

A magnetic refrigerator operating in the 12 to 77K range utilizes a belt which carries ferromagnetic or paramagnetic material and which is disposed in a loop which passes through the center of a solenoidal magnet to achieve cooling. The magnetic material carried by the belt, which can be blocks in frames of a linked belt, can be a mixture of substances with different Curie temperatures arranged such that the Curie temperatures progressively increase from one edge of the belt to the other. This magnetic refrigerator can be used to cool and liquefy hydrogen or other fluids.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4704871
• OSTI ID: 866411
• Country of Publication: United States
• Language: English

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