ELECTROCALORIC SYSTEM WITH ACTIVE REGENERATION
First Claim
1. A system comprising:
- a first electrocaloric capacitor; and
a second electrocaloric capacitor proximate the first electrocaloric capacitor wherein the proximity enables heat transfer between the first and second electrocaloric capacitors,wherein a first electric field is applied to the first electrocaloric capacitor and a second electric field is applied to the second electrocaloric capacitor, andwherein the first and second electric fields are complementary such that when the first and second electric fields are applied to their respective electrocaloric capacitors the temperature of the first electrocaloric capacitor rises in accordance with a rising first electric field and the temperature of the second electrocaloric capacitor decreases in accordance with a decreasing second electric field or the temperature of the first electrocaloric capacitor decreases in accordance with a decreasing first electric field and the temperature of the second electrocaloric capacitor increases in accordance with a rising second electric field.
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Accused Products
Abstract
An electrocaloric with active regeneration includes first and second electrocaloric capacitors proximate one another enabling heat transfer there between. In the system, complementary first and second electric fields are applied to their respective electrocaloric capacitors such that when the electric fields are applied the temperature of the first electrocaloric capacitor increases while the temperature of the second electrocaloric capacitor decreases or vice-versa. Shifting of one or both of the electrocaloric capacitors relative to one another assists in heat transfer between the two and may additionally transfer heat from an object to be cooled, which is connected to the first electrocaloric capacitor, to a heat sink, which is connected to a second electrocaloric capacitor.
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Citations
22 Claims
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1. A system comprising:
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a first electrocaloric capacitor; and a second electrocaloric capacitor proximate the first electrocaloric capacitor wherein the proximity enables heat transfer between the first and second electrocaloric capacitors, wherein a first electric field is applied to the first electrocaloric capacitor and a second electric field is applied to the second electrocaloric capacitor, and wherein the first and second electric fields are complementary such that when the first and second electric fields are applied to their respective electrocaloric capacitors the temperature of the first electrocaloric capacitor rises in accordance with a rising first electric field and the temperature of the second electrocaloric capacitor decreases in accordance with a decreasing second electric field or the temperature of the first electrocaloric capacitor decreases in accordance with a decreasing first electric field and the temperature of the second electrocaloric capacitor increases in accordance with a rising second electric field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11)
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9. The system 8, wherein the substantially synchronous shifting occurs intermittently or continuously in correspondence with the raising and lowering of the first and second electric fields.
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12. A system comprising:
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a first electrocaloric capacitor; and a second electrocaloric capacitor proximate the first electrocaloric capacitor wherein the proximity enables heat transfer between the first and second electrocaloric capacitors, wherein a first electric field is applied to the first electrocaloric capacitor and a second electric field is applied to the second electrocaloric capacitor, and wherein the first and second electric fields are complementary such that when the first and second electric fields are applied to their respective electrocaloric capacitors the temperature of the first electrocaloric capacitor rises in accordance with a rising first electric field and the temperature of the second electrocaloric capacitor decreases in accordance with a decreasing second electric field or the temperature of the first electrocaloric capacitor decreases in accordance with a decreasing first electric field and the temperature of the second electrocaloric capacitor increases in accordance with a rising second electric field, and wherein one or both of the first and second electrocaloric capacitors are shifted relative to one another in correspondence with the raising and lowering of the first and second electric fields. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of cooling comprising:
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moving a second electrocaloric capacitor a first direction relative to a first electrocaloric capacitor; increasing an electric field on the first electrocaloric capacitor while lowering an electric field on the second electrocaloric capacitor whereby heat is transferred from the first electrocaloric capacitor to the second electrocaloric capacitor; moving the second electrocaloric capacitor in a direction opposite the first direction relative to the first electrocaloric capacitor; and increasing an electric field on the second electrocaloric capacitor while lowering an electric field on the first electrocaloric capacitor whereby heat is transferred from the second electrocaloric capacitor to the first electrocaloric capacitor.
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22. A system comprising:
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a first pyroelectric capacitor; and a second pyrelectric capacitor proximate the first pyroelectric capacitor wherein the proximity enables heat transfer between the first and second pyroelectric capacitors, wherein a first voltage is applied to the first pyroelectric capacitor and a second voltage is apply to the second pyroelectric capacitor, and wherein the first and second voltages are complementary such that when the first and second voltages are applied to their respective pyroelectric capacitors the temperature of the first pyroelectric capacitor increases in accordance with a decreasing first voltage and the temperature of the second pyroelectric capacitor decreases in accordance with an increasing second voltage or the temperature of the first pyroelectric capacitor decreases in accordance with an increasing first voltage and the temperature of the second pyroelectric capacitor increases in accordance with a decreasing second voltage.
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Specification