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Title: A numerical analysis of a magnetocaloric refrigerator with a 16-layer regenerator

A numerical analysis was conducted to study a room temperature magnetocaloric refrigerator with a 16-layer parallel plates active magnetic regenerator (AMR). Sixteen layers of LaFeMnSiH having different Curie temperatures were employed as magnetocaloric material (MCM) in the regenerator. Measured properties data was used. A transient one dimensional (1D) model was employed, in which a unique numerical method was developed to significantly accelerate the simulation speed of the multi-layer AMR system. As a result, the computation speed of a multi-layer AMR case was very close to the single-layer configuration. The performance of the 16-layer AMR system in different frequencies and utilizations has been investigated using this model. To optimize the layer length distribution of the 16-layer MCMs in the regenerator, a set of 137 simulations with different MCM distributions based on the Design of Experiments (DoE) method was conducted and the results were analyzed. The results show that the 16-layer AMR system can operate up to 84% of Carnot cycle COP at a temperature span of 41 K, which cannot be obtained using an AMR with fewer layers. Here, the DoE results indicate that for a 16-layer AMR system, the uniform distribution is very close to the optimized design.
Authors:
ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1407793

Zhang, Mingkan, Abdelaziz, Omar, Momen, Ayyoub Mehdizadeh, and Abu-Heiba, Ahmad. A numerical analysis of a magnetocaloric refrigerator with a 16-layer regenerator. United States: N. p., Web. doi:10.1038/s41598-017-14406-9.
Zhang, Mingkan, Abdelaziz, Omar, Momen, Ayyoub Mehdizadeh, & Abu-Heiba, Ahmad. A numerical analysis of a magnetocaloric refrigerator with a 16-layer regenerator. United States. doi:10.1038/s41598-017-14406-9.
Zhang, Mingkan, Abdelaziz, Omar, Momen, Ayyoub Mehdizadeh, and Abu-Heiba, Ahmad. 2017. "A numerical analysis of a magnetocaloric refrigerator with a 16-layer regenerator". United States. doi:10.1038/s41598-017-14406-9. https://www.osti.gov/servlets/purl/1407793.
@article{osti_1407793,
title = {A numerical analysis of a magnetocaloric refrigerator with a 16-layer regenerator},
author = {Zhang, Mingkan and Abdelaziz, Omar and Momen, Ayyoub Mehdizadeh and Abu-Heiba, Ahmad},
abstractNote = {A numerical analysis was conducted to study a room temperature magnetocaloric refrigerator with a 16-layer parallel plates active magnetic regenerator (AMR). Sixteen layers of LaFeMnSiH having different Curie temperatures were employed as magnetocaloric material (MCM) in the regenerator. Measured properties data was used. A transient one dimensional (1D) model was employed, in which a unique numerical method was developed to significantly accelerate the simulation speed of the multi-layer AMR system. As a result, the computation speed of a multi-layer AMR case was very close to the single-layer configuration. The performance of the 16-layer AMR system in different frequencies and utilizations has been investigated using this model. To optimize the layer length distribution of the 16-layer MCMs in the regenerator, a set of 137 simulations with different MCM distributions based on the Design of Experiments (DoE) method was conducted and the results were analyzed. The results show that the 16-layer AMR system can operate up to 84% of Carnot cycle COP at a temperature span of 41 K, which cannot be obtained using an AMR with fewer layers. Here, the DoE results indicate that for a 16-layer AMR system, the uniform distribution is very close to the optimized design.},
doi = {10.1038/s41598-017-14406-9},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {10}
}

Works referenced in this record:

Thirty years of near room temperature magnetic cooling: Where we are today and future prospects
journal, September 2008

Giant Magnetocaloric Effect in Gd5(Si2Ge2)
journal, June 1997