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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{minus}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{minus}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. 17 figs.

Inventors:
;
Issue Date:
Research Org.:
Iowa State University
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
335437
Patent Number(s):
5,887,449
Application Number:
PAN: 8-881,836
Assignee:
Iowa State Univ. Research Foundation, Inc., Ames, IA (United States) PTO; SCA: 080203; PA: EDB-99:044652; SN: 99002077319
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 30 Mar 1999
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN FUEL; HYDROGEN STORAGE; LIQUEFACTION; MAGNETIC REFRIGERATORS; COMBINED CYCLES; BRAYTON CYCLE; REFRIGERANTS; DESIGN; OPERATION; DYSPROSIUM ALLOYS; ALUMINIUM ALLOYS; ERBIUM ALLOYS

Citation Formats

Pecharsky, V.K., and Gschneidner, K.A. Jr. Dual stage active magnetic regenerator and method. United States: N. p., 1999. Web.
Pecharsky, V.K., & Gschneidner, K.A. Jr. Dual stage active magnetic regenerator and method. United States.
Pecharsky, V.K., and Gschneidner, K.A. Jr. Tue . "Dual stage active magnetic regenerator and method". United States.
@article{osti_335437,
title = {Dual stage active magnetic regenerator and method},
author = {Pecharsky, V.K. and Gschneidner, K.A. Jr.},
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{minus}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{minus}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. 17 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {3}
}