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Title: Flow-synchronous field motion refrigeration

An improved method to manage the flow of heat in an active regenerator in a magnetocaloric or an electrocaloric heat-pump refrigeration system, in which heat exchange fluid moves synchronously with the motion of a magnetic or electric field. Only a portion of the length of the active regenerator bed is introduced to or removed from the field at one time, and the heat exchange fluid flows from the cold side toward the hot side while the magnetic or electric field moves along the active regenerator bed.
Issue Date:
OSTI Identifier:
Charles N. Hassen (Tucson, AZ) CHO
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2010 Sep 17
Research Org:
CHO (Chicago Operations Office, Argonne, IL (United States))
Sponsoring Org:
Country of Publication:
United States

Other works cited in this record:

Closed-Cycle Electrocaloric Refrigerator and Method
patent, February 1972

Magnetic heat pumping
patent, January 1978

Active magnetic regenerator
patent, June 1982

Wheel-type magnetic refrigerator
patent, October 1983

Reciprocating magnetic refrigerator employing tandem porous matrices within a reciprocating displacer
patent, April 1985

Rotary dipole active magnetic regenerative refrigerator
patent, February 1993

Bipolar pulse field for magnetic refrigeration
patent, October 1994

Heat transfer apparatus and method employing active regenerative cycle
patent, December 2001

Rotating bed magnetic refrigeration apparatus
patent, March 2003

Rotating magnet magnetic refrigerator
patent, December 2003

Electrocaloric device and thermal transfer systems employing the same
patent, April 2005

Apparatus and methods for cooling and liquefying a fluid using magnetic refrigeration
patent-application, April 2002

Method and device for converting heat into mechanical or electrical power
patent-application, July 2006

Device for generating a thermal flux with magneto-caloric material
patent-application, June 2007

Method and device for continuous generation of cold and heat by means of the magneto-calorific effect
patent-application, June 2007

Self-Contained Voltage Generating Systems
patent-application, June 2008

Magnetic heat exchanging unit for magnetic refrigerator
patent-application, October 2008

Active Magnetic Refrigerator
patent-application, December 2008

Pattern forming apparatus and pattern forming method
patent-application, February 2009

Magnetic Material for Magnetic Refrigeration Apparatus, AMR Bed, and Magnetic Refrigeration Apparatus
patent-application, September 2009

Shuttle Type Magnetic Refrigerator
patent-application, December 2009

Refrigeration Devices Based on Polar-Polymers
patent-application, January 2011

Design and performance of a permanent-magnet rotary refrigerator
journal, December 2006

Factors limiting the operation frequency of magnetic refrigerators
journal, June 2007
  • Kuz’min, M. D.
  • Applied Physics Letters, Vol. 90, Issue 25, Article No. 251916
  • DOI: 10.1063/1.2750540

Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature
journal, August 2008

Thirty years of near room temperature magnetic cooling: Where we are today and future prospects
journal, September 2008

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