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:
-
- Ames, IA
- (Ames, IA)
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- OSTI Identifier:
- 872220
- Patent Number(s):
- 5887449
- Application Number:
- 08/881,836
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25J - LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- 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. Fri .
"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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
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