Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

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 University, Ames, IA (US)
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 (10)

An Ericsson Magnetic Refrigerator for Low Temperature book January 1988
Materials for Regenerative Magnetic Cooling Spanning 20K to 80K book January 1992
Influence of Crystal Field Interaction on the Thermal Behavior of ErAl2 book January 1977
Thermodynamic analysis of magnetically active regenerator from 30 to 70 K with a Brayton-like cycle journal October 1990
Low temperature heat capacities of laves phase lanthanide-aluminum compounds journal January 1971
New type of magnetocaloric effect: Implications on low‐temperature magnetic refrigeration using an Ericsson cycle journal May 1994
New application of complex magnetic materials to the magnetic refrigerant in an Ericsson magnetic refrigerator journal November 1987
Magnetic properties of (rare earth)Al 2 intermetallic compounds journal August 1990
Heat capacity in superconducting and normal-state La S x ( 1.333 <~ x <~ 1.500 ) compounds journal April 1982
Investigation of the Magnetic Refrigerant for the Ericsson Magnetic Refrigerator journal January 1987

Similar Records

Dual stage active magnetic regenerator and method
Patent · 1999 · OSTI ID:335437
Ternary Dy-Er-Al magnetic refrigerants
Patent · 1994 · OSTI ID:869994
Ternary Dy-Er-Al magnetic refrigerants
Patent · 1995 · OSTI ID:87741

Related Subjects

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