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Title: Using numerical methods to screen magnetocaloric materials in an active magnetic regenerative cycle

Abstract

A 2-dimensional numerical model of a room temperature operating Active Magnetic Regenerator (AMR) that comprises of a regenerator, hot and cold heat exchangers, heat transfer fluid is developed. The regenerator is made of a magnetocaloric material (MCM) which heats up upon applying a magnetic field, H, and cools down when the field is removed; thus, making it the most essential part of an AMR. The model takes experimentally measured ΔTad(H,T) and the Cp(H,T) data as input and provides quantitative performance metrics of the magnetic cooling system, such as ΔTspan and the cooling load, as output. With this model, it is possible to assess a wide range of MCMs in an AMR. 4 different MCMs were investigated using this model in terms of their ΔTspan and the cooling loads—LaFe10.96Co0.97Si1.07, MnFeP(1-x)As(x) and AlFe2B2 and Gd. During the screening of MCMs, all the important operating conditions of the device were fixed such as the fluid flow rate, ambient temperature, cycle duration, magnetic field strength. Our results indicate that Gd exhibits the maximum ΔTspan with respectable cooling load, while AlFe2B2 generates the lowest ΔTspan. Even though LaFeCoSi compound did not perform as well as Gd, it could be the MCM choice for the realizationmore » of magnetic refrigeration on a global scale due to its much lower cost.« less

Authors:
ORCiD logo; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States). Critical Materials Institute; Iowa State Univ., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
OSTI Identifier:
1671359
Alternate Identifier(s):
OSTI ID: 1677500
Report Number(s):
IS-J-10,335
Journal ID: ISSN 0140-7007; S0140700720303467; PII: S0140700720303467
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Published Article
Journal Name:
International Journal of Refrigeration
Additional Journal Information:
Journal Name: International Journal of Refrigeration Journal Volume: 120 Journal Issue: C; Journal ID: ISSN 0140-7007
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English
Subject:
36 MATERIALS SCIENCE; Magnetic refrigeration; Solid refrigerant screening; Regenerator; Modeling; Numerical simulation

Citation Formats

Ucar, Huseyin, Paudyal, Durga, and Boyraz, Ozdal. Using numerical methods to screen magnetocaloric materials in an active magnetic regenerative cycle. United Kingdom: N. p., 2020. Web. https://doi.org/10.1016/j.ijrefrig.2020.08.015.
Ucar, Huseyin, Paudyal, Durga, & Boyraz, Ozdal. Using numerical methods to screen magnetocaloric materials in an active magnetic regenerative cycle. United Kingdom. https://doi.org/10.1016/j.ijrefrig.2020.08.015
Ucar, Huseyin, Paudyal, Durga, and Boyraz, Ozdal. Sat . "Using numerical methods to screen magnetocaloric materials in an active magnetic regenerative cycle". United Kingdom. https://doi.org/10.1016/j.ijrefrig.2020.08.015.
@article{osti_1671359,
title = {Using numerical methods to screen magnetocaloric materials in an active magnetic regenerative cycle},
author = {Ucar, Huseyin and Paudyal, Durga and Boyraz, Ozdal},
abstractNote = {A 2-dimensional numerical model of a room temperature operating Active Magnetic Regenerator (AMR) that comprises of a regenerator, hot and cold heat exchangers, heat transfer fluid is developed. The regenerator is made of a magnetocaloric material (MCM) which heats up upon applying a magnetic field, H, and cools down when the field is removed; thus, making it the most essential part of an AMR. The model takes experimentally measured ΔTad(H,T) and the Cp(H,T) data as input and provides quantitative performance metrics of the magnetic cooling system, such as ΔTspan and the cooling load, as output. With this model, it is possible to assess a wide range of MCMs in an AMR. 4 different MCMs were investigated using this model in terms of their ΔTspan and the cooling loads—LaFe10.96Co0.97Si1.07, MnFeP(1-x)As(x) and AlFe2B2 and Gd. During the screening of MCMs, all the important operating conditions of the device were fixed such as the fluid flow rate, ambient temperature, cycle duration, magnetic field strength. Our results indicate that Gd exhibits the maximum ΔTspan with respectable cooling load, while AlFe2B2 generates the lowest ΔTspan. Even though LaFeCoSi compound did not perform as well as Gd, it could be the MCM choice for the realization of magnetic refrigeration on a global scale due to its much lower cost.},
doi = {10.1016/j.ijrefrig.2020.08.015},
journal = {International Journal of Refrigeration},
number = C,
volume = 120,
place = {United Kingdom},
year = {2020},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.ijrefrig.2020.08.015

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