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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.
Inventors:
Issue Date:
OSTI Identifier:
1375949
Assignee:
Charles N. Hassen (Tucson, AZ) CHO
Patent Number(s):
9,739,510
Application Number:
13/261,218
Contract Number:
FG02-07ER84943
Resource Relation:
Patent File Date: 2010 Sep 17
Research Org:
CHO (Chicago Operations Office, Argonne, IL (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Works referenced in this record:

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