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Title: Dual stage active magnetic regenerator and method

Abstract

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.

Inventors:
 [1]
  1. Ames, IA
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
872220
Patent Number(s):
US 5887449
Application Number:
08/881,836
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Pecharsky, Vitalij K, and Gschneidner, Jr., Karl A. Dual stage active magnetic regenerator and method. United States: N. p., 1999. Web.
Pecharsky, Vitalij K, & Gschneidner, Jr., Karl A. Dual stage active magnetic regenerator and method. United States.
Pecharsky, Vitalij K, and Gschneidner, Jr., Karl A. 1999. "Dual stage active magnetic regenerator and method". United States. https://www.osti.gov/servlets/purl/872220.
@article{osti_872220,
title = {Dual stage active magnetic regenerator and method},
author = {Pecharsky, Vitalij K and Gschneidner, Jr., Karl A.},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/872220}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Works referenced in this record:

New type of magnetocaloric effect: Implications on low‚Äźtemperature 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


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


Low temperature heat capacities of laves phase lanthanide-aluminum compounds
journal, January 1971


Investigation of the Magnetic Refrigerant for the Ericsson Magnetic Refrigerator
journal, January 1987