skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dual stage active magnetic regenerator and method

Patent ·
OSTI ID:872220
 [1]
  1. Ames, IA
+ Show Author Affiliations

A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl.sub.2 or (Dy.sub.1-x Er.sub.x)Al.sub.2 where x is selected to be greater than 0 and less than about 0.3 in combination with a low temperature stage comprising (Dy.sub.1-x Er.sub.x)Al.sub.2 where x is selected to be greater than about 0.5 and less than 1 to provide significantly improved refrigeration efficiency in the liquefaction of gaseous hydrogen.

Research Organization:
Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
DOE Contract Number:
W-7405-ENG-82
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Number(s):
US 5887449
Application Number:
08/881,836
OSTI ID:
872220
Country of Publication:
United States
Language:
English

References (9)

New type of magnetocaloric effect: Implications on low‐temperature magnetic refrigeration using an Ericsson cycle journal May 1994
Heat capacity in superconducting and normal-state La S x ( 1.333 <~ x <~ 1.500 ) compounds journal April 1982
An Ericsson Magnetic Refrigerator for Low Temperature book January 1988
New application of complex magnetic materials to the magnetic refrigerant in an Ericsson magnetic refrigerator journal November 1987
Influence of Crystal Field Interaction on the Thermal Behavior of ErAl2 book January 1977
Magnetic properties of (rare earth)Al 2 intermetallic compounds journal August 1990
Low temperature heat capacities of laves phase lanthanide-aluminum compounds journal January 1971
Thermodynamic analysis of magnetically active regenerator from 30 to 70 K with a Brayton-like cycle journal October 1990
Investigation of the Magnetic Refrigerant for the Ericsson Magnetic Refrigerator journal January 1987

Similar Records

Dual stage active magnetic regenerator and method
Patent · Tue Mar 30 00:00:00 EST 1999 · OSTI ID:872220
Ternary Dy-Er-Al magnetic refrigerants
Patent · Sun Jan 01 00:00:00 EST 1995 · OSTI ID:872220
Ternary Dy-Er-Al magnetic refrigerants
Patent · Tue Jul 25 00:00:00 EDT 1995 · OSTI ID:872220

Related Subjects

dual
stage
active
magnetic
regenerator
method
refrigerator
joule-brayton
thermodynamic
cycle
temperature
refrigerant
comprising
dyal
1-x
selected
combination
provide
significantly
improved
refrigeration
efficiency
liquefaction
gaseous
hydrogen
temperature stage
significantly improved
gaseous hydrogen
active magnetic
magnetic regenerator
provide significantly
thermodynamic cycle
stage active
significantly improve
dual stage
joule-brayton thermodynamic
/62/