SYSTEM AND METHOD FOR REVERSE DEGRADATION OF A MAGNETOCALORIC MATERIAL
First Claim
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1. A method comprising:
- identifying at least partial degradation of a magnetocaloric material in a magnetic cooling system, wherein the magnetiocaloric material has a Curie temperature; and
regenerating the magnetocaloric material by maintaining the magnetocaloric material at a regenerating temperature, wherein the regenerating temperature is different from the Curie temperature of the magnetocaloric material.
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Abstract
A method includes identifying at least partial degradation of a magnetocaloric material in a magnetic cooling system, wherein the magnetiocaloric material has a Curie temperature. The method also includes regenerating the magnetocaloric material by maintaining the magnetocaloric material at a regenerating temperature, wherein the regenerating temperature is different from the Curie temperature of the magnetocaloric material.
72 Citations
22 Claims
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1. A method comprising:
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identifying at least partial degradation of a magnetocaloric material in a magnetic cooling system, wherein the magnetiocaloric material has a Curie temperature; and regenerating the magnetocaloric material by maintaining the magnetocaloric material at a regenerating temperature, wherein the regenerating temperature is different from the Curie temperature of the magnetocaloric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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forming at least one bed of a magnetic cooling system, wherein the at least one bed includes a magnetocaloric material, wherein the magnetocaloric material has a Curie temperature, and wherein a heat transfer fluid is configured to transfer heat to or from the magnetocaloric material in the at least one bed; forming at least one valve of the magnetic cooling system to control a flow of the heat transfer fluid through the at least one bed and either a heater or a heat exchanger, wherein flow of the heat transfer fluid between the at least one bed and the heater regenerates the magnetocaloric material by maintaining the magnetocaloric material at a regenerating temperature, and wherein the regenerating temperature is different from the Curie temperature of the magnetocaloric material. - View Dependent Claims (10, 11)
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12. An apparatus comprising:
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a heat transfer fluid; a bed comprising a magnetocaloric material that has a Curie temperature, wherein the bed is configured to allow the heat transfer fluid to transfer heat to or from the magnetocaloric material; and a heater configured to maintain the magnetocaloric material at a regenerating temperature for an amount of time to regenerate the magnetocaloric material, wherein the regenerating temperature is different from the Curie temperature of the magnetocaloric material. - View Dependent Claims (13, 14, 15, 16)
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17. A heat transfer system comprising:
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a first subsystem comprising; a first heat transfer fluid; a first bed having a first magnetocaloric material, wherein the first magnetocaloric material has a first Curie temperature; and a first valve configured to control whether the first subsystem operates in regeneration mode or cooling mode; and a second subsystem comprising; a second heat transfer fluid; a second bed having a second magnetocaloric material, wherein the second magnetocaloric material has a second Curie temperature; and a second valve configured to control whether the second subsystem operates in regeneration mode or cooling mode. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification